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The document discusses how traffic moves over the internet. It explains that internet service providers (ISPs) connect customers to the internet using appropriate data transmission technologies. Point of presence (POP) locations are access points where internet users first connect to their ISP, with giga POPs having gigabit forwarding capacity. Each ISP must connect to major internet backbones via high-speed fiber-optic links between data centers and agencies. Wireless ISPs also provide internet access using wireless devices.
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Tier 1 Internet service providers sell access to their networks to Tier 2 ISPs. Tier 2 ISPs then sell Internet access to organizations and home users. However, sometimes Tier 1 ISPs may sell Internet access directly to organizations and individuals. Additionally, a second intermediary ISP, referred to as a Tier 3 ISP, may purchase network bandwidth from a Tier 2 ISP before selling that bandwidth to end users.
When traffic is routed from your home network to the Internet, it goes through a number of hops before reaching its destination. For example, traffic may travel from your modem, to your Tier 3 ISP’s network, to a Tier 2 ISP’s network, to a Tier 1 ISP’s network, then back down through a different set of ISPs before reaching the destination.
The underlying technology that ISPs use to establish connectivity can be based on analog telephone lines (dial-up), DSL, cable, satellite, Wi-Fi, fiber optics, or other connectivity mediums. The reason many cable and telephone providers are also ISPs is because their underlying infrastructure can accommodate Internet traffic
Internet F
Traffic moves over the Internet through three main components: ISPs and POPs, the Internet backbone, and ISP data centers. When users connect to their ISP, they connect through an access concentrator at the ISP's Point of Presence. The Internet backbone is a high-speed network that connects major institutions and keeps the network established. It connects POPs to the ISP's data center, where email and other servers are located to provide services to users.
Ga12
The document discusses how traffic moves over the internet through routers, personal digital assistants (PDAs), internet service providers (ISPs), and America Online (AOL). Routers connect different networks and spread after TCP/IP was used for communication protocols. PDAs are small devices that process schedules, to-dos, addresses, memos, and other information. ISPs provide internet hookup services like email accounts, web hosting, content services, and portal site management. AOL is a large US-based ISP and portal site that offers global internet connection services through analog lines and modems.
Week12
ISPs provide access to the internet through POP access points that connect users to the global internet backbone, which is a network of core routers that aggregate and transfer data around the world. POPs are points of presence that allow local email clients to connect to the internet using the Post Office Protocol standard. Personal digital assistants are small, portable electronic devices that are about the size of a palm.
Week12
The document discusses how traffic moves over the internet. It describes that ISPs provide access to the internet and services. POPs are access points to the internet that transfer data using the Post Office Protocol. The internet backbone refers to the principal data routes between large networks, consisting of core routers that transfer data around the world. It also mentions that a PDA is a small personal electronic device.
Week12
The document discusses how traffic moves over the internet. It describes that ISPs provide access to the internet and services. POPs are access points to the internet that transfer data using the Post Office Protocol. The internet backbone refers to the principal data routes between large networks, consisting of core routers that transfer data around the world. It also mentions that a PDA is a small personal electronic device.
chapter_1_v8.1.pptx
Under circuit switching, each user is allocated the full 1 Gbps bandwidth when active, even though they only need 100 Mbps. Therefore, the 1 Gbps link can only support 1 user. Under packet switching, the link bandwidth is statistical multiplexed among users. Since each user is active only 10% of the time, the 1 Gbps link can support up to 10 users.
How Traffic Moves over the Internet
The document discusses how internet traffic moves from a personal computer to the wider internet. It describes how a user connects to AOL as an internet service provider, which has a firewall for security. The traffic then goes from AOL through an ISP's point of presence to reach the broader internet. The point of presence uses POP3, an email retrieval protocol, to help distribute email traffic.
How
When a modem connects to an internet service provider (ISP), it connects to a router called an access concentrator located at the ISP's Point of Presence, usually near a telephone facility. High-speed leased lines connect these Points of Presence to the ISP's main data center, where email and other servers are located. Each ISP connects to major internet backbones via very high-speed fiber-optic links, and these backbones are all interconnected so traffic automatically reroutes if one fails. Traffic then moves between data centers, businesses, universities, government agencies, and end users.
The basic concept of internet connection
An Internet service provider (ISP) provides users access to the internet. Individuals and networks connect to an ISP, which are connected to each other to form the internet backbone. ISPs offer various connection options depending on location and speed needs. They also provide different service levels for home versus business users. The internet protocol (IP) enables communication over the internet by assigning IP addresses to devices and routing packets between them.
Week12 "How Traffic Moves over the Internet"
The document outlines how traffic moves over the Internet, including Internet service providers (ISPs) that offer customers access, post office protocols (POP) that allow email retrieval from remote servers, the internet backbone which consists of many interconnected networks forming the main trunk, and personal digital assistants (PDAs) which are palm-sized electronic devices.
Sw2 week12
Traffic moves over the Internet by flowing from individual devices through local internet service providers (ISPs), which are connected to high-capacity backbone networks that link data across the world. Personal digital assistants (PDAs) are compact devices that can access the Internet through this infrastructure to retrieve personal information on the go.
Lecture 1 -_overview_of_the_internet-1-
The document provides an overview of key concepts related to the internet. It discusses internet infrastructure including autonomous systems, points of presence, and peering points. It also covers common internet access methods like dial-up, DSL, cable, and T1/DS1. Internet service providers are defined and their role in connecting users to the internet is explained. Uniform resource locators and how web browsers work to access URLs is summarized. The differences between internet, intranet and extranet are briefly outlined.
Lecture 1 -_overview_of_the_internet-1-
The document provides an overview of key concepts related to the internet:
- It describes internet infrastructure including autonomous systems, points of presence, and peering points. Common access methods include dial-up, DSL, cable, and T1 lines.
- Internet service providers (ISPs) provide physical connections and address space to access the internet. Uniform resource locators (URLs) specify addresses for internet resources.
- The differences between internet, intranet, and extranet are defined in terms of private vs public access to network resources.
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Presen W12
- 1. Group WEB PRESENTATION Week 12 How Traffic Moves over the Internet Yukihiro Yoshida (s1110228) Kei Asakura (s1120003) Ippei Kato (s1140058)
- 2. Internet service provider (ISP) An Internet service provider (ISP, also called Internet access provider or IAP) is a company that offers its customers access to the Internet. The ISP connect to its customers using a data transmission technology appropriate for delivering Internet protocol datagrams. Quoted Web site: http://en.wikipedia.org/wiki/Internet_service_provider
- 3. Point of Presence (POP) POP is an access point that the Internet user connects with ISP first. Especially, POP with the forwarding capacity of the IP packet of the gigabit class is called giga POP. Quoted Web site: http://dictionary.rbbtoday.com/Details/term1815.html
- 4. Internet backbone Each ISP must have a high-speed connection to one of the major Internet backbone. There are very high-speed fiber- optic connections that link major ISP data center, universities, and government agencies. All major backbones are interconnected, so that if one fails, the others automatically pick up the traffic. Quoted from “How Networks Work”
- 5. Wireless Several wireless ISPs provide wireless Internet access using wireless PDA devices such as Plam IV, cellphone, notebook PC and so on. Quoted from “How Networks Work”
- 6. Quoted Web sites: + Internet service provider http://dictionary.rbbtoday.com/Details/term97.html + Point of Presence (POP) http://dictionary.rbbtoday.com/Details/term1815.html + Internet backbones + Wireless from “How Networks Work” http://www.powells.com/biblio/9780789732323?&PID=719