title
Understanding Broadband Technologies
description
Correction: 8 Bits = 1 Byte -- In the overview Eli had a dyslexic moment and switched it.
Info
Level:Beginner
Presenter: Eli the Computer Guy
Length of Class: 65 Minutes
Tracks
Networking
Prerequisites
None
Purpose of Class
This class teaches students about the various types of broadband technologies available to connect homes and businesses to the Internet. We discuss the pros and cons of the different options so that students can make an informed decision about purchasing their Internet service.
Topics Covered
Basic Broadband Concepts
T1
Carrier Grade Ethernet
Point to Point Wireless
Wireless
DSL
Cable
Satellite
Class Notes
Introduction
8 Bits = 1 Byte
Synchronous means upload and download speed are the same
Asynchronous means upload and download speeds are different
Latency is the time it takes for bits to get from the sender to the receiver
Speed Tests -- WhatIsMyIp.com is a good speed test
Business Class service is better the Residential Service
Static vs. Dynamic IP
Blocking Ports/ Services -- Make sure your Internet based software will work with your ISP
SLA (Service Level Agreements) offer a guarantee of service
T1
SLA
1.5 Mbps synchronous
Can reach places other cannot
Carrier Class Ethernet
Numerous Speed Options
Synchronous
SLA
Point to Point Wireless
Point to Point
Synchronous
Can be good enough for real time communications
SLA?
Mom and Pop Shops
Wireless
3G, WiMax, 4G, Edge
Not point to point
Different services offer different things
Usage caps
DSL
Straight connection to central office
Asynchronous (756Kbps up)
Max tech standard at 12Mbps
Distance from CO matters
PPOE
Cable
MAC Address
Shared Trunk line
DOCIS 3.0 152 down, 108 up
FIOS
Fiber Optic
More stable the cable internet
Satellite
Hughes Net
Horrible Latency
detail
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download and upload speed.', 'duration': 31.493, 'max_score': 232.119, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20232119.jpg'}, {'end': 421.446, 'src': 'embed', 'start': 394.465, 'weight': 4, 'content': [{'end': 402.882, 'text': 'Why latency is important is For things like real-time communication, you need the latency to be very, very low.', 'start': 394.465, 'duration': 8.417}, {'end': 409.275, 'text': 'Latency is measured in milliseconds, so you want it somewhere around 20 milliseconds or less in latency.', 'start': 403.263, 'duration': 6.012}, {'end': 415.544, 'text': "Because if you don't, it'll be like some of those weird phone calls.", 'start': 410.222, 'duration': 5.322}, {'end': 421.446, 'text': "You know when you're talking on the phone and you're talking to somebody, let's say in France, and you say something,", 'start': 415.604, 'duration': 5.842}], 'summary': 'Low latency is crucial for real-time communication, aiming for around 20 milliseconds or less.', 'duration': 26.981, 'max_score': 394.465, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20394465.jpg'}], 'start': 49.316, 'title': 'Broadband connection and data understanding', 'summary': 'Covers the importance of choosing the right broadband connection and understanding data transfer, bits, bytes, and latency. it emphasizes the commitment of at least a year for broadband and highlights that 8 bits equal 1 byte, data size is measured in bytes, and speed of data transfer is measured in bits, with latency measured in milliseconds.', 'chapters': [{'end': 132.676, 'start': 49.316, 'title': 'Choosing the right broadband connection', 'summary': 'Covers the importance of understanding and choosing the right broadband connection, highlighting the commitment of at least a year and the need to make informed decisions for business needs.', 'duration': 83.36, 'highlights': ['The commitment for a broadband connection is at least a year, with businesses potentially having to pay three to five months of bills upfront.', 'The class aims to educate on the different types of broadband connections and provide resources to make informed decisions for business needs.', 'The importance of understanding what broadband connection to buy before making the purchase is emphasized.']}, {'end': 511.03, 'start': 133.236, 'title': 'Understanding bits, bytes, data transfer, and latency', 'summary': 'Explains the difference between bits and bytes, the significance of bits and bytes in data storage and internet speed, the concept of synchronous and asynchronous transfer, and the importance of latency in real-time communication, emphasizing that 8 bits equal 1 byte, data size is measured in bytes, and speed of data transfer is measured in bits, with latency measured in milliseconds.', 'duration': 377.794, 'highlights': ['8 bits equals 1 byte, data size is measured in bytes, and speed of data transfer is measured in bits Understanding the difference between bits and bytes is crucial as 8 bits equal 1 byte, and data size is always measured in bytes while the speed of data transfer is measured in bits.', 'The concept of synchronous and asynchronous transfer Explaining the concept of synchronous and asynchronous transfer, with examples such as cable internet being asynchronous and T1 connections being synchronous.', 'The importance of latency in real-time communication, emphasizing that latency is measured in milliseconds Highlighting the significance of latency in real-time communication and the need for low latency, measured in milliseconds, to avoid disruptions in communication.']}], 'duration': 461.714, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U2049316.jpg', 'highlights': ['Understanding the importance of choosing the right broadband connection before making a purchase.', 'Educating on different types of broadband connections and providing resources for informed decisions.', 'Commitment for a broadband connection is at least a year, with businesses potentially paying upfront bills.', 'Explaining the difference between bits and bytes, with 8 bits equaling 1 byte and data size measured in bytes.', 'Highlighting the significance of latency in real-time communication and the need for low latency measured in milliseconds.', 'Explaining the concept of synchronous and asynchronous transfer with relevant examples.']}, {'end': 956.351, 'segs': [{'end': 554.597, 'src': 'embed', 'start': 528.793, 'weight': 1, 'content': [{'end': 538.057, 'text': 'Basically, the internet service providers, your Verizons, your Comcasts, your Quests, those types of people, they really want business customers.', 'start': 528.793, 'duration': 9.264}, {'end': 543.591, 'text': 'because you always know the business customer is going to pay the bill.', 'start': 540.649, 'duration': 2.942}, {'end': 550.215, 'text': 'And not only that, but business customers actually spend money on their own internal tech support.', 'start': 544.532, 'duration': 5.683}, {'end': 554.597, 'text': 'So the ISPs get less service calls from business customers.', 'start': 550.455, 'duration': 4.142}], 'summary': 'Isps prioritize business customers for higher revenue and fewer service calls.', 'duration': 25.804, 'max_score': 528.793, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20528793.jpg'}, {'end': 641.985, 'src': 'embed', 'start': 597.385, 'weight': 0, 'content': [{'end': 604.611, 'text': 'And the reason I have business class Comcast for my house is because I have a 24 hour guarantee that if my internet goes down,', 'start': 597.385, 'duration': 7.226}, {'end': 605.892, 'text': 'somebody will be there to fix it.', 'start': 604.611, 'duration': 1.281}, {'end': 611.336, 'text': 'If I had residential internet service to my house, it could be five days before somebody comes.', 'start': 606.512, 'duration': 4.824}, {'end': 617.721, 'text': "The reason is because I'm spending more money for a business class service so that they want me to be happier.", 'start': 611.757, 'duration': 5.964}, {'end': 626.952, 'text': "So when you're buying your broadband service, suggest you go with the business class service.", 'start': 617.821, 'duration': 9.131}, {'end': 628.573, 'text': 'You will be treated better.', 'start': 626.992, 'duration': 1.581}, {'end': 631.556, 'text': "the companies like you, more you'll get better service.", 'start': 628.573, 'duration': 2.983}, {'end': 635.52, 'text': 'everything will just be better, nicer, happier than if you get residential service.', 'start': 631.556, 'duration': 3.964}, {'end': 641.985, 'text': "The next thing to talk about is you've probably heard of something called IP addresses.", 'start': 637.521, 'duration': 4.464}], 'summary': 'Business class comcast offers 24-hour internet fix guarantee, ensuring better service and faster support compared to residential service.', 'duration': 44.6, 'max_score': 597.385, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20597385.jpg'}, {'end': 740.537, 'src': 'embed', 'start': 666.73, 'weight': 3, 'content': [{'end': 672.155, 'text': "What's the difference? A static IP address, let's say is, let's say 92.68.74.21.", 'start': 666.73, 'duration': 5.425}, {'end': 680.222, 'text': "I don't know if this is a real IP address, but let's say this is a real IP address.", 'start': 672.155, 'duration': 8.067}, {'end': 687.708, 'text': 'So this means that computers would use this address to get to your network from the internet.', 'start': 680.242, 'duration': 7.466}, {'end': 694.664, 'text': 'So if you have a web server, they would go address.', 'start': 687.748, 'duration': 6.916}, {'end': 698.127, 'text': 'So, if you have a web server, if you use something called VPN,', 'start': 694.864, 'duration': 3.263}, {'end': 706.292, 'text': 'if you have anything on your network where people from the internet need to get to your network, then you should have a static IP address,', 'start': 698.127, 'duration': 8.165}, {'end': 708.454, 'text': 'because this IP address always stays the same.', 'start': 706.292, 'duration': 2.162}, {'end': 720.573, 'text': "What a dynamic IP address means is that the little modem you have in your house or your business, whether it's a DSL modem or a cable modem, Every,", 'start': 709.174, 'duration': 11.399}, {'end': 725.134, 'text': "anywhere between day, one day to, let's say, three months, it'll get a new IP address.", 'start': 720.573, 'duration': 4.561}, {'end': 727.135, 'text': "It'll get a different IP address.", 'start': 725.154, 'duration': 1.981}, {'end': 731.675, 'text': 'So today it might be 92.68.74.21.', 'start': 727.335, 'duration': 4.34}, {'end': 737.476, 'text': 'Tomorrow it might be 208.44.55.94.', 'start': 731.675, 'duration': 5.801}, {'end': 739.017, 'text': 'And the day after that, it might be something else.', 'start': 737.477, 'duration': 1.54}, {'end': 740.537, 'text': 'And the day after that, it might be something else.', 'start': 739.037, 'duration': 1.5}], 'summary': 'Static ip stays the same, dynamic ip changes frequently.', 'duration': 73.807, 'max_score': 666.73, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20666730.jpg'}, {'end': 907.765, 'src': 'embed', 'start': 881.905, 'weight': 6, 'content': [{'end': 888.021, 'text': 'One thing that you should remember may block certain ports.', 'start': 881.905, 'duration': 6.116}, {'end': 895.222, 'text': "So if you're trying to set up a web server, let's say you want to run the website out of your house.", 'start': 889.021, 'duration': 6.201}, {'end': 898.883, 'text': 'so you have a little computer in your house and you want to run a website.', 'start': 895.222, 'duration': 3.661}, {'end': 907.765, 'text': 'well, most residential internet connections will block the port that you use to run the web server.', 'start': 898.883, 'duration': 8.882}], 'summary': 'Residential internet connections may block web server ports.', 'duration': 25.86, 'max_score': 881.905, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20881905.jpg'}], 'start': 511.03, 'title': 'The importance of business class broadband and understanding ip addresses', 'summary': 'Emphasizes the benefits of opting for business class broadband over residential, including quicker problem resolution and the importance of static ip addresses for web servers and vpns, with a discussion on the implications of dynamic versus static ip addresses.', 'chapters': [{'end': 617.721, 'start': 511.03, 'title': 'Choosing business class broadband', 'summary': 'Emphasizes the importance of opting for business class broadband over residential class for better guarantees and less service calls, as business customers are more valued by isps and are willing to pay for internal tech support, resulting in quicker problem resolution.', 'duration': 106.691, 'highlights': ['Business customers are preferred by ISPs because they are more likely to pay the bill and invest in their own internal tech support, resulting in fewer service calls compared to residential customers.', 'Business class broadband offers better guarantees, such as a 24-hour fix window for internet issues, compared to potential 5-day delays for residential service, highlighting the importance of opting for business class service for quicker problem resolution.', "Residential clients are considered a 'pain in the butt' by ISPs, leading to different pricing for business and residential class broadband services."]}, {'end': 740.537, 'start': 617.821, 'title': 'Choosing business broadband and understanding ip addresses', 'summary': 'Discusses the benefits of choosing business class broadband service over residential service and explains the difference between static and dynamic ip addresses, highlighting the importance of a static ip address for web servers and vpns.', 'duration': 122.716, 'highlights': ['The importance of choosing business class broadband service for better treatment and service from companies.', 'Explanation of the difference between static and dynamic IP addresses and the significance of a static IP address for web servers and VPNs.', 'Clarification on the need for a static IP address for web servers and VPNs to ensure consistent accessibility from the internet.', 'Description of how a dynamic IP address can change anywhere between one day to three months, leading to varying IP addresses for accessibility.', 'Explanation of how a static IP address always stays the same, providing stability for accessing network resources from the internet.']}, {'end': 956.351, 'start': 740.917, 'title': 'Dynamic vs static ip address', 'summary': 'Discusses the implications of using dynamic and static ip addresses, highlighting the potential issues with spam filters, cost differences, and port blocking by internet service providers.', 'duration': 215.434, 'highlights': ['Dynamic IP addresses are used by spammers due to lower costs and can lead to emails being blocked by spam filters, while static IP addresses cost $10 to $50 extra a month (quantifiable) (relevance: 5)', 'Some internet service providers block certain ports, which can affect the functionality of services like web servers, and it is recommended to inquire about port blocking when choosing a provider (relevance: 4)']}], 'duration': 445.321, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20511030.jpg', 'highlights': ['Business class broadband offers better guarantees, such as a 24-hour fix window for internet issues, compared to potential 5-day delays for residential service, highlighting the importance of opting for business class service for quicker problem resolution.', 'Business customers are preferred by ISPs because they are more likely to pay the bill and invest in their own internal tech support, resulting in fewer service calls compared to residential customers.', 'The importance of choosing business class broadband service for better treatment and service from companies.', 'Explanation of the difference between static and dynamic IP addresses and the significance of a static IP address for web servers and VPNs.', 'Description of how a dynamic IP address can change anywhere between one day to three months, leading to varying IP addresses for accessibility.', 'Explanation of how a static IP address always stays the same, providing stability for accessing network resources from the internet.', 'Some internet service providers block certain ports, which can affect the functionality of services like web servers, and it is recommended to inquire about port blocking when choosing a provider.']}, {'end': 1393.466, 'segs': [{'end': 983.236, 'src': 'embed', 'start': 956.351, 'weight': 4, 'content': [{'end': 963.92, 'text': 'and so when they tried to use the virtual private networking to get into the office server, that port was blocked.', 'start': 956.351, 'duration': 7.569}, {'end': 970.886, 'text': 'So before you decide to buy your internet service, make sure you know what ports are blocked.', 'start': 964.26, 'duration': 6.626}, {'end': 976.55, 'text': "The next thing that we're going to talk about is something called SLAs.", 'start': 972.647, 'duration': 3.903}, {'end': 980.474, 'text': "And this is very important depending on what you're doing.", 'start': 977.251, 'duration': 3.223}, {'end': 983.236, 'text': 'SLAs are called Service Level Agreements.', 'start': 980.894, 'duration': 2.342}], 'summary': 'Virtual private networking was hindered due to blocked port; emphasize understanding blocked ports before purchasing internet service. slas (service level agreements) are crucial for operations.', 'duration': 26.885, 'max_score': 956.351, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20956351.jpg'}, {'end': 1134.812, 'src': 'embed', 'start': 1105.624, 'weight': 2, 'content': [{'end': 1107.885, 'text': 'you have an SLA, a service level agreement.', 'start': 1105.624, 'duration': 2.261}, {'end': 1110.847, 'text': "So you're bound.", 'start': 1108.566, 'duration': 2.281}, {'end': 1116.912, 'text': "They are contractually bound to give you the speeds that you've written the contract on.", 'start': 1111.148, 'duration': 5.764}, {'end': 1123.477, 'text': "Like I say, this is important because when you go to Comcast, Internet, or Verizon, they don't give you SLAs.", 'start': 1117.712, 'duration': 5.765}, {'end': 1127.82, 'text': "So most of the time, they'll give you the speeds that they advertise.", 'start': 1123.497, 'duration': 4.323}, {'end': 1134.812, 'text': "But if they don't give it to you for two days or three days or a week, well, it's your problem.", 'start': 1128.609, 'duration': 6.203}], 'summary': 'Having an sla ensures contractual speed guarantees, unlike with providers like comcast and verizon.', 'duration': 29.188, 'max_score': 1105.624, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201105624.jpg'}, {'end': 1203.049, 'src': 'embed', 'start': 1175.501, 'weight': 0, 'content': [{'end': 1181.346, 'text': 'So, therefore, I will go to a carrier class Ethernet connection which has an SLA,', 'start': 1175.501, 'duration': 5.845}, {'end': 1184.828, 'text': 'which has a service level agreement of whatever we decide at 99.999% of the time.', 'start': 1181.346, 'duration': 3.482}, {'end': 1192.239, 'text': 'When I go to that, I will go from paying $60 a month to $600 a month.', 'start': 1186.994, 'duration': 5.245}, {'end': 1195.802, 'text': "And that's what you have to understand when you start saying, hey, I want an SLA.", 'start': 1192.739, 'duration': 3.063}, {'end': 1197.144, 'text': 'Well, they cost money.', 'start': 1196.203, 'duration': 0.941}, {'end': 1203.049, 'text': "In order to get that 99.999% uptime, I'm literally going to pay 10 times the cost.", 'start': 1197.324, 'duration': 5.725}], 'summary': 'Upgrading to carrier class ethernet with 99.999% sla increases cost from $60 to $600 per month.', 'duration': 27.548, 'max_score': 1175.501, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201175501.jpg'}, {'end': 1315.538, 'src': 'embed', 'start': 1289.397, 'weight': 5, 'content': [{'end': 1297.325, 'text': 'Well, now that you have residential clients and business clients being able to hit websites at 50 megabits per second or 100 megabits per second,', 'start': 1289.397, 'duration': 7.928}, {'end': 1305.052, 'text': "sometimes the slowness that you see on the internet is actually not going to be your computer and it's not going to be your internet connection.", 'start': 1297.325, 'duration': 7.727}, {'end': 1315.538, 'text': "It's going to be the website's internet connection, because when we talk about you know 10.", 'start': 1305.533, 'duration': 10.005}], 'summary': 'Residential and business clients can access websites at 50-100 mbps, website slowness may be due to their internet connection.', 'duration': 26.141, 'max_score': 1289.397, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201289397.jpg'}, {'end': 1399.388, 'src': 'embed', 'start': 1368.031, 'weight': 6, 'content': [{'end': 1370.972, 'text': 'means the speed down is the same as the speed up.', 'start': 1368.031, 'duration': 2.941}, {'end': 1375.214, 'text': 'Asynchronous connection means the speed down is different than the speed up.', 'start': 1370.992, 'duration': 4.222}, {'end': 1382.637, 'text': "Latency, the latency for real time communication has to be very low, let's say 20 milliseconds.", 'start': 1376.014, 'duration': 6.623}, {'end': 1393.466, 'text': "You can go and you can do up and down is, and the latency if you're having problems.", 'start': 1382.717, 'duration': 10.749}, {'end': 1399.388, 'text': 'If this is for a business, make sure to get a business class service, not a residential class service.', 'start': 1394.206, 'duration': 5.182}], 'summary': 'Asynchronous connection affects speed; aim for 20ms latency for real-time communication; opt for business class service.', 'duration': 31.357, 'max_score': 1368.031, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201368031.jpg'}], 'start': 956.351, 'title': 'Internet speeds and slas', 'summary': 'Discusses the significance of slas in guaranteeing internet speeds, emphasizing the 99.999% uptime guarantee for carrier class ethernet connections, and the impact of high-speed internet on website server performance, including trade-offs between cost and uptime for carrier class ethernet connections.', 'chapters': [{'end': 1175.2, 'start': 956.351, 'title': 'Understanding slas and internet speeds', 'summary': 'Discusses the importance of knowing which ports are blocked before purchasing internet service and the significance of service level agreements (slas) in guaranteeing internet speeds, with an emphasis on the 99.999% uptime guarantee for carrier class ethernet connections.', 'duration': 218.849, 'highlights': ['SLAs are crucial in ensuring internet speeds as per the agreed contract, with carrier class ethernet connections providing a 99.999% uptime guarantee. Service Level Agreements (SLAs) are essential for guaranteeing internet speeds as per the agreed upon contract, with carrier class ethernet connections offering a 99.999% uptime guarantee.', "It's important to know which ports are blocked before purchasing internet service to ensure access to necessary resources. Before purchasing internet service, it's crucial to understand which ports are blocked to ensure access to necessary resources, such as office servers.", 'Internet service providers may not always deliver the advertised speeds, making SLAs crucial for ensuring guaranteed performance. Internet service providers may not always deliver the advertised speeds, making Service Level Agreements (SLAs) crucial for ensuring guaranteed performance in internet speeds.']}, {'end': 1393.466, 'start': 1175.501, 'title': 'Carrier class ethernet and internet speed', 'summary': 'Discusses the trade-offs between cost and uptime for carrier class ethernet connections, the impact of high-speed internet on website server performance, and the importance of understanding network basics such as latency and asynchronous connections.', 'duration': 217.965, 'highlights': ['Carrier class Ethernet connection with 99.999% uptime SLA costs 10 times more than standard connection Transitioning to a carrier class Ethernet connection with a 99.999% uptime SLA increases the monthly cost from $60 to $600, highlighting the significant cost difference for improved reliability.', "Impact of high-speed internet on website server performance As residential and business clients access websites at higher speeds (e.g., 50-100 megabits per second), slower website performance may be attributed to the website's internet connection rather than the user's own connection, emphasizing the need for websites to keep up with increased speeds.", 'Importance of understanding network basics such as latency and asynchronous connections The chapter emphasizes the significance of grasping fundamental network concepts like latency (requiring low latency for real-time communication) and asynchronous connections, highlighting their relevance in troubleshooting network issues and optimizing performance.']}], 'duration': 437.115, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U20956351.jpg', 'highlights': ['Carrier class Ethernet connection with 99.999% uptime SLA costs 10 times more than standard connection', 'Transitioning to a carrier class Ethernet connection with a 99.999% uptime SLA increases the monthly cost from $60 to $600, highlighting the significant cost difference for improved reliability.', 'Service Level Agreements (SLAs) are essential for guaranteeing internet speeds as per the agreed upon contract, with carrier class ethernet connections offering a 99.999% uptime guarantee.', 'Internet service providers may not always deliver the advertised speeds, making Service Level Agreements (SLAs) crucial for ensuring guaranteed performance in internet speeds.', "Before purchasing internet service, it's crucial to understand which ports are blocked to ensure access to necessary resources, such as office servers.", "As residential and business clients access websites at higher speeds (e.g., 50-100 megabits per second), slower website performance may be attributed to the website's internet connection rather than the user's own connection, emphasizing the need for websites to keep up with increased speeds.", 'The chapter emphasizes the significance of grasping fundamental network concepts like latency (requiring low latency for real-time communication) and asynchronous connections, highlighting their relevance in troubleshooting network issues and optimizing performance.']}, {'end': 2116.211, 'segs': [{'end': 1450.935, 'src': 'embed', 'start': 1394.206, 'weight': 0, 'content': [{'end': 1399.388, 'text': 'If this is for a business, make sure to get a business class service, not a residential class service.', 'start': 1394.206, 'duration': 5.182}, {'end': 1405.811, 'text': 'The internet service providers will always treat business class people better than they will treat residential people.', 'start': 1400.048, 'duration': 5.763}, {'end': 1408.898, 'text': 'Try to get a static IP address.', 'start': 1407.037, 'duration': 1.861}, {'end': 1416.201, 'text': "Again, when you're doing services on the internet, there are problems that come about if you have a dynamic IP address.", 'start': 1409.438, 'duration': 6.763}, {'end': 1421.363, 'text': 'So if your internet service provider offers you a static IP address, just pay the extra 10 bucks a month for it.', 'start': 1416.401, 'duration': 4.962}, {'end': 1424.484, 'text': 'It really will cause you less headaches in the long run.', 'start': 1422.083, 'duration': 2.401}, {'end': 1430.759, 'text': 'Make sure also if people are going to be trying to come into your network, as in,', 'start': 1425.618, 'duration': 5.141}, {'end': 1434.781, 'text': "you're running a web server or you have a VPN or you have anything like that.", 'start': 1430.759, 'duration': 4.022}, {'end': 1440.082, 'text': 'before you sign the contract with your internet service provider, make sure you understand what ports they block.', 'start': 1434.781, 'duration': 5.301}, {'end': 1443.903, 'text': 'Because if they block one of those ports that you need, that could be a problem.', 'start': 1440.202, 'duration': 3.701}, {'end': 1450.034, 'text': "Like I say, if you're trying to run a web server and they block port A, server.", 'start': 1443.923, 'duration': 6.111}, {'end': 1450.935, 'text': "That's just how it is.", 'start': 1450.134, 'duration': 0.801}], 'summary': 'For business internet, opt for business class service with static ip to avoid network issues and ensure smooth operations.', 'duration': 56.729, 'max_score': 1394.206, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201394206.jpg'}, {'end': 1608.555, 'src': 'embed', 'start': 1574.306, 'weight': 3, 'content': [{'end': 1577.988, 'text': "A T1 line, you're only ever going to get 1.5 megabits per second down.", 'start': 1574.306, 'duration': 3.682}, {'end': 1579.049, 'text': 'It maxes at that.', 'start': 1578.248, 'duration': 0.801}, {'end': 1586.448, 'text': "The reason T1s are good and why they're still used is you do get a service level agreement when you get them.", 'start': 1580.285, 'duration': 6.163}, {'end': 1590.53, 'text': 'You get the 99.99% uptime guarantee.', 'start': 1587.288, 'duration': 3.242}, {'end': 1592.031, 'text': "So that's nice.", 'start': 1591.35, 'duration': 0.681}, {'end': 1599.154, 'text': "So if you don't need to do a lot of things on the internet, but you need to know that the internet will always be there, T1 lines can be good for you.", 'start': 1592.091, 'duration': 7.063}, {'end': 1608.555, 'text': "The other thing with them is they can go to places that DSL and Comcast cable internet can't go to.", 'start': 1599.892, 'duration': 8.663}], 'summary': 'T1 line offers 1.5 mbps with 99.99% uptime guarantee, suitable for reliable internet in remote areas.', 'duration': 34.249, 'max_score': 1574.306, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201574306.jpg'}, {'end': 2013.113, 'src': 'embed', 'start': 1976.508, 'weight': 5, 'content': [{'end': 1982.553, 'text': "Like I say, it's good because you can get it further than you can to DSL or cable modems.", 'start': 1976.508, 'duration': 6.045}, {'end': 1984.975, 'text': 'You get that service level agreement, 99.99% uptime.', 'start': 1982.793, 'duration': 2.182}, {'end': 1997.907, 'text': 'Like I said, they start at $250 and go up to about $500 for a T1 line.', 'start': 1993.766, 'duration': 4.141}, {'end': 2006.891, 'text': "So, now that we've talked about the T1 connection,", 'start': 2004.21, 'duration': 2.681}, {'end': 2013.113, 'text': "the next type of connection and this is the one that's becoming more popular is something called carrier-grade Ethernet.", 'start': 2006.891, 'duration': 6.222}], 'summary': 'T1 line offers 99.99% uptime, priced $250-$500. carrier-grade ethernet gaining popularity.', 'duration': 36.605, 'max_score': 1976.508, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201976508.jpg'}, {'end': 2067.062, 'src': 'embed', 'start': 2036.443, 'weight': 4, 'content': [{'end': 2042.885, 'text': 'The important thing is this is another type of business class service that offers you a service level agreement.', 'start': 2036.443, 'duration': 6.442}, {'end': 2046.807, 'text': 'So when you order a carrier class Ethernet, you get the 99.99% off time.', 'start': 2043.125, 'duration': 3.682}, {'end': 2055.632, 'text': 'that you get a much wider range of speeds.', 'start': 2052.79, 'duration': 2.842}, {'end': 2060.797, 'text': "So I've seen where you can get 284 kilobits per second up and down.", 'start': 2056.033, 'duration': 4.764}, {'end': 2067.062, 'text': 'This is a synchronous data connection, so you get the same speed down as you get up.', 'start': 2061.297, 'duration': 5.765}], 'summary': 'Carrier class ethernet offers 99.99% uptime and a wide range of speeds, including 284kbps, with synchronous data connection.', 'duration': 30.619, 'max_score': 2036.443, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202036443.jpg'}], 'start': 1394.206, 'title': 'Optimizing business internet setup and connection options', 'summary': 'Emphasizes the significance of opting for a business class internet service with a static ip address for better treatment and smooth functioning. it also discusses the importance of service level agreements for internet connections, focusing on t1 lines and carrier-grade ethernet, highlighting their speeds, costs, and benefits.', 'chapters': [{'end': 1450.935, 'start': 1394.206, 'title': 'Optimizing business internet setup', 'summary': 'Emphasizes the importance of opting for a business class internet service with a static ip address to ensure better treatment, fewer issues, and smooth functioning, especially for web servers, vpns, or other network-related services.', 'duration': 56.729, 'highlights': ['It is crucial to opt for a business class internet service over residential class to receive better treatment and service from internet service providers.', 'Having a static IP address can prevent issues when running services on the internet, making it worth paying the extra $10 a month for the service.', 'Understanding the ports that are blocked by the internet service provider is essential, especially for running web servers, VPNs, or other network-related services, to avoid potential issues.']}, {'end': 2116.211, 'start': 1452.115, 'title': 'Internet connection options', 'summary': 'Discusses the importance of service level agreements for internet connections, with a focus on t1 lines and carrier-grade ethernet, highlighting their speeds, costs, and benefits.', 'duration': 664.096, 'highlights': ['T1 lines provide a service level agreement with 99.99% uptime guarantee, offering 1.5 megabits per second down and up, making them suitable for locations where DSL or cable modems are unavailable. T1 lines offer a 99.99% uptime guarantee and provide 1.5 megabits per second down and up, making them suitable for locations where DSL or cable modems are unavailable.', 'Carrier-grade Ethernet offers a wider range of speeds, from 284 kilobits per second up and down to 50 megabits per second up and down, with a synchronous data connection, providing a reliable and high-speed internet option. Carrier-grade Ethernet provides a wider range of speeds, from 284 kilobits per second up and down to 50 megabits per second up and down, with a synchronous data connection, offering a reliable and high-speed internet option.', 'The cost of T1 lines ranges from $250 to $500 per month, while carrier-grade Ethernet can cost between $100 and $700 per month, depending on the desired speed, providing options for businesses based on their budget and internet speed needs. T1 lines cost between $250 and $500 per month, and carrier-grade Ethernet can cost between $100 and $700 per month, catering to businesses with varying budget and internet speed needs.']}], 'duration': 722.005, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U201394206.jpg', 'highlights': ['Opt for business class internet service for better treatment and service from providers.', 'Static IP address prevents issues when running services on the internet, worth paying extra $10/month.', 'Understanding blocked ports by the internet service provider is essential for running web servers, VPNs, or other network-related services.', 'T1 lines offer 99.99% uptime guarantee, 1.5 Mbps up and down, suitable for locations without DSL or cable modems.', 'Carrier-grade Ethernet provides a wider range of speeds, from 284 kbps to 50 Mbps up and down, with synchronous data connection.', 'T1 lines cost between $250 and $500 per month, carrier-grade Ethernet can cost between $100 and $700 per month.']}, {'end': 2774.128, 'segs': [{'end': 2223.763, 'src': 'embed', 'start': 2197.829, 'weight': 0, 'content': [{'end': 2203.533, 'text': 'uh, the latency, uh, the time it takes to get from from one point together is actually very good.', 'start': 2197.829, 'duration': 5.704}, {'end': 2207.575, 'text': 'now you can do voice over ip and real-time communications.', 'start': 2203.533, 'duration': 4.042}, {'end': 2215.299, 'text': "uh, with with point-to-point wireless networks, They can be very good because if you're in a building that has old wiring,", 'start': 2207.575, 'duration': 7.724}, {'end': 2223.763, 'text': "or if you're in a place where DSL or Comcast internet aren't located, or if you just have other problems,", 'start': 2215.299, 'duration': 8.464}], 'summary': 'Low latency enables efficient voice over ip and real-time communications, especially in areas with limited connectivity options.', 'duration': 25.934, 'max_score': 2197.829, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202197829.jpg'}, {'end': 2309.529, 'src': 'embed', 'start': 2272.394, 'weight': 3, 'content': [{'end': 2276.415, 'text': 'Like I said, this can be very good because this can be installed very quickly.', 'start': 2272.394, 'duration': 4.021}, {'end': 2279.156, 'text': 'You can get a lot of speed out of this.', 'start': 2277.316, 'duration': 1.84}, {'end': 2283.578, 'text': "You can get up to a gigabit per second if you're willing to spend like $3,000 a month.", 'start': 2279.176, 'duration': 4.402}, {'end': 2285.959, 'text': 'So like I said, it can be good.', 'start': 2284.018, 'duration': 1.941}, {'end': 2287.84, 'text': 'Low latency, up to a gigabit per second.', 'start': 2286.019, 'duration': 1.821}, {'end': 2296.083, 'text': 'issues. that you run into, though, with using these point-to-point wireless services,', 'start': 2289.6, 'duration': 6.483}, {'end': 2309.529, 'text': 'is many of the companies that are now providing these services are very are much more like mom-and-pop shops versus large corporate Goliaths like Verizon.', 'start': 2296.083, 'duration': 13.446}], 'summary': 'Point-to-point wireless services offer up to a gigabit per second speed at a cost of $3,000 a month, but the providers are mostly small businesses, not large corporations.', 'duration': 37.135, 'max_score': 2272.394, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202272394.jpg'}, {'end': 2538.374, 'src': 'embed', 'start': 2501.677, 'weight': 2, 'content': [{'end': 2506.721, 'text': "But it also goes slow, like the edge network, something that AT&T has, it's like 256 kilobits per second.", 'start': 2501.677, 'duration': 5.044}, {'end': 2521.685, 'text': 'version When you go with one of these services, you have to make sure that you buy the one that suits your purposes.', 'start': 2512.54, 'duration': 9.145}, {'end': 2538.374, 'text': 'Like I say right now, WiMAX and 4G networks, the companies that are selling them are really pushing the fact and use it for your business.', 'start': 2523.126, 'duration': 15.248}], 'summary': "At&t's edge network runs at 256 kilobits per second; wimax and 4g networks are being promoted for business use.", 'duration': 36.697, 'max_score': 2501.677, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202501677.jpg'}, {'end': 2675.993, 'src': 'embed', 'start': 2644.684, 'weight': 1, 'content': [{'end': 2652.467, 'text': "Verizon has also come out with a cool little device that it's wireless, but then you can hook four computers up to it.", 'start': 2644.684, 'duration': 7.783}, {'end': 2657.77, 'text': 'And again, with this, they give you a very small amount of data transfer.', 'start': 2652.888, 'duration': 4.882}, {'end': 2662.632, 'text': 'So you can only use one gig or two gigs or whatever it is now.', 'start': 2657.79, 'duration': 4.842}, {'end': 2666.473, 'text': "You can't use 100 gigs in a month and not have to pay for it.", 'start': 2662.912, 'duration': 3.561}, {'end': 2675.993, 'text': 'So the main thing to remember about these wireless different things, different ways.', 'start': 2667.093, 'duration': 8.9}], 'summary': 'Verizon offers a wireless device for four computers with limited data usage, not exceeding 100 gigs/month.', 'duration': 31.309, 'max_score': 2644.684, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202644684.jpg'}, {'end': 2758.016, 'src': 'embed', 'start': 2724.413, 'weight': 4, 'content': [{'end': 2728.115, 'text': 'DSL is only ever offered by telephone companies.', 'start': 2724.413, 'duration': 3.702}, {'end': 2731.166, 'text': 'When you buy the DSL line.', 'start': 2729.366, 'duration': 1.8}, {'end': 2738.909, 'text': 'it is an asynchronous connection, so it almost always maxes at about 756 kilobits per second up.', 'start': 2731.166, 'duration': 7.743}, {'end': 2746.19, 'text': 'so you may have 1.5 megabit per second down or 3 megabit per second down, or 8 megabit per second down, or even 12,', 'start': 2738.909, 'duration': 7.281}, {'end': 2749.931, 'text': 'it goes up to 12 megabit per second down, but you will only have 756 kilobit per second up.', 'start': 2746.19, 'duration': 3.741}, {'end': 2758.016, 'text': 'So it really depends on what you need out of your internet connection.', 'start': 2753.012, 'duration': 5.004}], 'summary': 'Dsl offers asymmetric connections up to 12 mbps down but limited to 756 kbps up.', 'duration': 33.603, 'max_score': 2724.413, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202724413.jpg'}], 'start': 2116.291, 'title': 'Internet connection types and wireless technologies', 'summary': 'Highlights the benefits of point-to-point wireless for providing internet in areas with old wiring or no dsl/comcast availability, discusses various wireless technologies like 3g, wimax, and 4g, and emphasizes the need to understand data transfer limits and the number of computers that can be connected.', 'chapters': [{'end': 2272.314, 'start': 2116.291, 'title': 'Types of internet connections', 'summary': 'Discusses carrier ethernet and point-to-point wireless internet connections, highlighting the benefits of point-to-point wireless for providing internet in areas with old wiring or no dsl/comcast availability.', 'duration': 156.023, 'highlights': ['Point-to-point wireless internet connections are becoming more popular and are provided by companies with towers and antennas, such as Believe Wireless or Port Networks in Baltimore. Point-to-point wireless internet connections are gaining popularity, and companies like Believe Wireless or Port Networks provide this service with towers and antennas.', 'Point-to-point wireless internet connections are beneficial for areas with old wiring, or where DSL or Comcast internet services are unavailable, as well as for real-time communications and voice over IP. Point-to-point wireless internet connections are beneficial for areas with old wiring or no DSL/Comcast availability, and support real-time communications and voice over IP.', 'Point-to-point wireless internet connections require directional antennas to be pointed at each other for the connection to work, and cannot be moved around for usage in different locations. Point-to-point wireless internet connections require directional antennas to be pointed at each other and are not mobile, requiring fixed positioning for connectivity.']}, {'end': 2774.128, 'start': 2272.394, 'title': 'Wireless technologies and point-to-point wireless services', 'summary': 'Discusses the advantages and limitations of point-to-point wireless services, various wireless technologies like 3g, wimax, and 4g, and the considerations for dsl connections, emphasizing the need to understand data transfer limits and the number of computers that can be connected.', 'duration': 501.734, 'highlights': ['Point-to-point wireless services can offer up to a gigabit per second speed but may be provided by smaller companies and may have limited maintenance resources, potentially leading to service disruptions if a single person responsible for fixing wireless antennas is unavailable. Up to a gigabit per second speed, smaller companies providing services, limited maintenance resources, potential service disruptions.', 'Wireless technologies like 3G, WiMAX, and 4G offer varying speeds, with 4G being the fastest at up to 10 megabits per second, while slower networks like the edge network offer speeds as low as 256 kilobits per second. 3G, WiMAX, 4G, varying speeds, 4G up to 10 megabits per second, edge network at 256 kilobits per second.', 'Considerations for wireless plans include the number of computers that can be connected and the amount of data transfer allowed per month, as most wireless services have limitations, such as a Verizon 3G plan offering only five gigabits of upload and download transfer per month. Number of connected computers, data transfer limitations, Verizon 3G plan offering five gigabits per month.', 'DSL connections are offered by telephone companies and provide varying download speeds but typically have a limited upload speed of about 756 kilobits per second, making it crucial to assess the required internet usage needs for business purposes. DSL offered by telephone companies, varying download speeds, limited 756 kilobits per second upload speed, assessing internet usage needs for business.']}], 'duration': 657.837, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202116291.jpg', 'highlights': ['Point-to-point wireless internet connections are beneficial for areas with old wiring, or where DSL or Comcast internet services are unavailable, as well as for real-time communications and voice over IP.', 'Considerations for wireless plans include the number of computers that can be connected and the amount of data transfer allowed per month, as most wireless services have limitations, such as a Verizon 3G plan offering only five gigabits of upload and download transfer per month.', 'Wireless technologies like 3G, WiMAX, and 4G offer varying speeds, with 4G being the fastest at up to 10 megabits per second, while slower networks like the edge network offer speeds as low as 256 kilobits per second.', 'Point-to-point wireless services can offer up to a gigabit per second speed but may be provided by smaller companies and may have limited maintenance resources, potentially leading to service disruptions if a single person responsible for fixing wireless antennas is unavailable.', 'DSL connections are offered by telephone companies and provide varying download speeds but typically have a limited upload speed of about 756 kilobits per second, making it crucial to assess the required internet usage needs for business purposes.']}, {'end': 3296.98, 'segs': [{'end': 2882.415, 'src': 'embed', 'start': 2853.378, 'weight': 4, 'content': [{'end': 2866.711, 'text': "the DSL provider and the telephone provider have to be the same now sometimes and we've to get the DSL service in.", 'start': 2853.378, 'duration': 13.333}, {'end': 2873.532, 'text': "So some people have signed long contracts with Exo Communications or Cavalier and they're not going to get out of that contract,", 'start': 2866.871, 'duration': 6.661}, {'end': 2876.193, 'text': 'but they still want Verizon DSL service.', 'start': 2873.532, 'duration': 2.661}, {'end': 2882.415, 'text': "So what they'll do is they'll get a single Verizon telephone line into their building and then use DSL on that.", 'start': 2876.573, 'duration': 5.842}], 'summary': 'Some users with contracts with other providers opt for verizon dsl by getting a single verizon telephone line into their building.', 'duration': 29.037, 'max_score': 2853.378, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202853378.jpg'}, {'end': 3004.674, 'src': 'embed', 'start': 2960.612, 'weight': 0, 'content': [{'end': 2969.095, 'text': 'with cable internet, that trunk line, Everybody in your neighborhood or everybody in your area shares that main line.', 'start': 2960.612, 'duration': 8.483}, {'end': 2975.861, 'text': 'So if a lot of people are on the internet at the same time and you have cable internet, your internet service will slow down.', 'start': 2969.475, 'duration': 6.386}, {'end': 2982.566, 'text': "So if everybody comes home and gets on the internet, your service will be slower than let's say at midnight when nobody's on the internet.", 'start': 2976.201, 'duration': 6.365}, {'end': 2985.669, 'text': "With DSL service, it's not the same way.", 'start': 2983.487, 'duration': 2.182}, {'end': 2989.152, 'text': 'You are not sharing that line back to the central office.', 'start': 2986.29, 'duration': 2.862}, {'end': 2997.831, 'text': 'If a million people are on the internet or one person is on the internet, your internet connection is not going to slow down.', 'start': 2991.107, 'duration': 6.724}, {'end': 3000.852, 'text': "So, whatever internet connection speed you have, that's what you have.", 'start': 2997.911, 'duration': 2.941}, {'end': 3004.674, 'text': "that's what you'll always have, no matter how many people are on the internet,", 'start': 3000.852, 'duration': 3.822}], 'summary': "Cable internet shares main line, dsl doesn't, providing consistent speed irrespective of users.", 'duration': 44.062, 'max_score': 2960.612, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202960612.jpg'}, {'end': 3076.316, 'src': 'embed', 'start': 3053.489, 'weight': 2, 'content': [{'end': 3065.551, 'text': "So I've seen this a lot where the telephone wiring in the building is simply so old and so corroded that when people get DSL service, it's just So.", 'start': 3053.489, 'duration': 12.062}, {'end': 3068.112, 'text': "this is something to keep in mind if you're dealing with old buildings.", 'start': 3065.551, 'duration': 2.561}, {'end': 3070.754, 'text': "If you're dealing with new buildings, this shouldn't be a problem.", 'start': 3068.152, 'duration': 2.602}, {'end': 3076.316, 'text': "If you're dealing with old buildings, just remember that the telephone wiring could be the problem.", 'start': 3071.094, 'duration': 5.222}], 'summary': 'Old telephone wiring in buildings can cause issues with dsl service.', 'duration': 22.827, 'max_score': 3053.489, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203053489.jpg'}, {'end': 3228.369, 'src': 'embed', 'start': 3198.25, 'weight': 1, 'content': [{'end': 3205.055, 'text': "3.0 This came out a couple years ago and DOS's 3.0 is absolutely amazing.", 'start': 3198.25, 'duration': 6.805}, {'end': 3216.843, 'text': "Basically what DOS's 3.0 allows is up to 152 megabit per second download speed and up to 108 megabit per second upload speed.", 'start': 3205.155, 'duration': 11.688}, {'end': 3228.369, 'text': "So DOS's 3.0, this technology for cable internet already exists, it's already tried and true and Comcast is already rolling this out.", 'start': 3217.383, 'duration': 10.986}], 'summary': "Dos's 3.0 offers up to 152 mbps download and 108 mbps upload speeds, already being rolled out by comcast.", 'duration': 30.119, 'max_score': 3198.25, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203198250.jpg'}], 'start': 2774.689, 'title': 'Dsl selection and comparison', 'summary': 'Discusses considerations for using dsl in a business environment, including matching the dsl provider with the telephone provider and the advantage of a dedicated line to the central office. it also compares dsl and cable internet, highlighting issues with old telephone wiring affecting dsl service and the improved speed and stability of cable internet, with docsis 3.0 offering up to 152 mbps download speed and 108 mbps upload speed.', 'chapters': [{'end': 3004.674, 'start': 2774.689, 'title': 'Choosing dsl for business', 'summary': 'Discusses the considerations for using dsl in a business environment, highlighting the importance of matching the dsl provider with the telephone provider and the advantage of a dedicated line to the central office, emphasizing the stability of dsl connection compared to cable internet.', 'duration': 229.985, 'highlights': ["DSL signal quality is affected by the distance from the central office, potentially leading to degradation and unreliable service, impacting businesses' internet connectivity.", 'The necessity of matching the DSL provider with the telephone provider is emphasized, as using different providers may not allow for the DSL signal to be transmitted over the telephone line effectively, presenting a challenge for businesses.', 'The advantage of DSL over cable internet is highlighted, as DSL offers a dedicated line to the central office, ensuring consistent internet speed regardless of the number of users, a significant benefit for business operations.', "The limitations of DSL service in terms of signal range from the central office are discussed, particularly in rural or suburban areas, where the distance may impact the quality and reliability of the DSL signal, potentially affecting businesses' internet connectivity."]}, {'end': 3296.98, 'start': 3004.674, 'title': 'Dsl vs cable internet', 'summary': 'Compares dsl and cable internet, highlighting issues with old telephone wiring affecting dsl service and the improved speed and stability of cable internet, with docsis 3.0 offering up to 152 mbps download speed and 108 mbps upload speed.', 'duration': 292.306, 'highlights': ['The new standard for cable internet, DOCSIS 3.0, allows for up to 152 Mbps download speed and up to 108 Mbps upload speed, making it a significant improvement over older cable internet technology.', 'Old telephone wiring in buildings, especially in old cities, may cause poor DSL service due to corrosion and age, resulting in speeds limited to 12 Mbps download and 756 kbps upload, making it unsuitable for running a website.', 'Cable internet has become more stable and better, with improved speed and reliability, offering up to 152 Mbps download speed and up to 108 Mbps upload speed with DOCSIS 3.0 technology.', 'In comparison to DSL, cable internet may face congestion issues during peak hours when multiple users connect to a single trunk line, potentially impacting internet performance in densely populated areas.', 'Old buildings may experience issues with DSL service due to deteriorated telephone wiring, resulting in bad internet connections, emphasizing the importance of considering the infrastructure when choosing internet options.']}], 'duration': 522.291, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U202774689.jpg', 'highlights': ['DSL offers a dedicated line to the central office, ensuring consistent internet speed regardless of the number of users, a significant benefit for business operations.', 'The new standard for cable internet, DOCSIS 3.0, allows for up to 152 Mbps download speed and up to 108 Mbps upload speed, making it a significant improvement over older cable internet technology.', 'Old telephone wiring in buildings, especially in old cities, may cause poor DSL service due to corrosion and age, resulting in speeds limited to 12 Mbps download and 756 kbps upload, making it unsuitable for running a website.', 'In comparison to DSL, cable internet may face congestion issues during peak hours when multiple users connect to a single trunk line, potentially impacting internet performance in densely populated areas.', 'The necessity of matching the DSL provider with the telephone provider is emphasized, as using different providers may not allow for the DSL signal to be transmitted over the telephone line effectively, presenting a challenge for businesses.']}, {'end': 3901.258, 'segs': [{'end': 3324.436, 'src': 'embed', 'start': 3296.98, 'weight': 1, 'content': [{'end': 3303.623, 'text': "or something like that if everybody's on the internet at the same time, they're all trying to use the bandwidth,", 'start': 3296.98, 'duration': 6.643}, {'end': 3308.873, 'text': "And so everybody's speed may slow down.", 'start': 3306.553, 'duration': 2.32}, {'end': 3315.175, 'text': "So when nobody else is on the internet, you may have, let's say, 12 megabit per second download speed.", 'start': 3309.534, 'duration': 5.641}, {'end': 3316.495, 'text': 'It may be blazing fast.', 'start': 3315.295, 'duration': 1.2}, {'end': 3321.916, 'text': 'When everybody gets on the internet, you may go down to 2 megabit per second download speed.', 'start': 3316.955, 'duration': 4.961}, {'end': 3324.436, 'text': 'This is a problem.', 'start': 3323.636, 'duration': 0.8}], 'summary': 'High internet usage can decrease download speed from 12 to 2 megabits per second.', 'duration': 27.456, 'max_score': 3296.98, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203296980.jpg'}, {'end': 3389.936, 'src': 'embed', 'start': 3349.444, 'weight': 2, 'content': [{'end': 3351.666, 'text': 'It does not have a service level agreement though.', 'start': 3349.444, 'duration': 2.222}, {'end': 3360.614, 'text': "So, if you're running your business using a cable internet connection, realize that when they give you 2 megabits per second upload,", 'start': 3352.387, 'duration': 8.227}, {'end': 3372.313, 'text': "If you get a 56 kilobit per second upload speed every once in a while, there's nothing you can do about it.", 'start': 3366.032, 'duration': 6.281}, {'end': 3373.373, 'text': 'That just happens.', 'start': 3372.553, 'duration': 0.82}, {'end': 3376.194, 'text': 'So there is no service level agreement with Comcast Internet.', 'start': 3373.473, 'duration': 2.721}, {'end': 3389.936, 'text': "So now that we've talked about DSL and cable internet, the next generation that's coming along of internet connection is something called Fios.", 'start': 3382.755, 'duration': 7.181}], 'summary': 'Cable internet lacks service level agreement. fios is the next-gen internet connection.', 'duration': 40.492, 'max_score': 3349.444, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203349444.jpg'}, {'end': 3429.832, 'src': 'embed', 'start': 3404.501, 'weight': 0, 'content': [{'end': 3409.302, 'text': 'With fiber optic to the door, realistically, the speeds are insane.', 'start': 3404.501, 'duration': 4.801}, {'end': 3413.044, 'text': "I'm not sure they really know what the limits of the speed of this will be.", 'start': 3409.322, 'duration': 3.722}, {'end': 3419.446, 'text': 'So in 10 or 20 years, you might be getting a gigabit per second, no problem with fiber optic.', 'start': 3414.444, 'duration': 5.002}, {'end': 3428.271, 'text': 'Fiber optic beats all beats all that.', 'start': 3420.106, 'duration': 8.165}, {'end': 3429.832, 'text': 'Fios is the best.', 'start': 3428.351, 'duration': 1.481}], 'summary': 'Fiber optic offers gigabit speeds, beating all other options. fios is the best.', 'duration': 25.331, 'max_score': 3404.501, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203404501.jpg'}, {'end': 3629.88, 'src': 'embed', 'start': 3599.008, 'weight': 3, 'content': [{'end': 3604.191, 'text': "So if you're in the fields of Wyoming or the mountains in the Rockies or, I don't know,", 'start': 3599.008, 'duration': 5.183}, {'end': 3609.754, 'text': "the middle of the city or somewhere where you can't get an internet connection, you can get satellite internet.", 'start': 3604.191, 'duration': 5.563}, {'end': 3615.723, 'text': "The problem with satellite internet is it's really expensive for what you get.", 'start': 3610.874, 'duration': 4.849}, {'end': 3620.969, 'text': "You start at $100 per month, and that's usually for a 1.5 megabit per second connection.", 'start': 3616.163, 'duration': 4.806}, {'end': 3629.88, 'text': "You normally have to pay a pretty large installation fee, so it's normally between $500 to $600 to get the satellite internet installed.", 'start': 3621.971, 'duration': 7.909}], 'summary': 'Satellite internet offers 1.5 mbps at $100/month, with $500-$600 installation fee.', 'duration': 30.872, 'max_score': 3599.008, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203599008.jpg'}], 'start': 3296.98, 'title': 'Comparing internet bandwidth and speed', 'summary': 'Compares the impact of multiple users on internet bandwidth, with speeds ranging from 12 mbps to 2 mbps, and discusses the advantages and challenges of fios and satellite internet, highlighting potential high speeds, deployment difficulties of fios, and the expansive coverage, high cost, and poor latency of satellite internet.', 'chapters': [{'end': 3376.194, 'start': 3296.98, 'title': 'Internet bandwidth and speed', 'summary': 'Discusses the impact of multiple users on internet bandwidth, with speeds ranging from 12 mbps to 2 mbps, and highlights the stability and drawbacks of cable internet, including the absence of a service level agreement with comcast internet.', 'duration': 79.214, 'highlights': ['Cable internet speeds can vary from 12 Mbps to 2 Mbps when multiple users are online, affecting the overall speed and stability of the connection.', 'Comcast Internet lacks a service level agreement, leading to potential drops in upload speed from 2 Mbps to 56 Kbps without any recourse for the user.', 'Cable internet is considered more stable and offers better download speeds compared to DSL service.']}, {'end': 3901.258, 'start': 3382.755, 'title': 'Fios and satellite internet', 'summary': 'Discusses the advantages and challenges of fios and satellite internet, emphasizing the potential high speeds and deployment difficulties of fios, and the expansive coverage but high cost and poor latency of satellite internet.', 'duration': 518.503, 'highlights': ['Fios: High-speed and deployment challenges Fios offers potentially insane speeds of up to a gigabit per second, surpassing DSL and cable internet. However, its deployment is expensive and requires significant effort and approval, leading to issues with localities like Baltimore City.', 'Satellite Internet: Expansive but costly with poor latency Satellite internet provides coverage in remote areas but is expensive, with starting costs of $100 per month and installation fees of $500 to $600. Additionally, it suffers from poor latency, making real-time communication unfeasible.']}], 'duration': 604.278, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/MsJ1A0W7U20/pics/MsJ1A0W7U203296980.jpg', 'highlights': ['Fios offers potentially insane speeds of up to a gigabit per second, surpassing DSL and cable internet.', 'Cable internet speeds can vary from 12 Mbps to 2 Mbps when multiple users are online, affecting the overall speed and stability of the connection.', 'Comcast Internet lacks a service level agreement, leading to potential drops in upload speed from 2 Mbps to 56 Kbps without any recourse for the user.', 'Satellite internet provides coverage in remote areas but is expensive, with starting costs of $100 per month and installation fees of $500 to $600.']}], 'highlights': ['Understanding the importance of choosing the right broadband connection before making a purchase.', 'Business class broadband offers better guarantees, such as a 24-hour fix window for internet issues, compared to potential 5-day delays for residential service, highlighting the importance of opting for business class service for quicker problem resolution.', 'Carrier class Ethernet connection with 99.999% uptime SLA costs 10 times more than standard connection', 'Point-to-point wireless internet connections are beneficial for areas with old wiring, or where DSL or Comcast internet services are unavailable, as well as for real-time communications and voice over IP.', 'Fios offers potentially insane speeds of up to a gigabit per second, surpassing DSL and cable internet.']}