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Chapter 7
Chapter 7

... What is the Internet? • The Internet is the largest computer network – A computer network is a collection of computers and devices linked to share data, hardware, and software – Data is exchanged using TCP/IP, which is a protocol that divides information into packets of data – The Internet backbone ...
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Chapter07.pdf
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Solution to test 2
Solution to test 2

... All nodes on subnet 1 will receive this ICMP request message and send reply messages to 158.132.2.100. Since the routers do not check the source addresses when forwarding, all the reply messages will be forwarded to subnet 2. If the number is large enough, the router that is responsible for forwardi ...
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Computer network

A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other along network links (data connections). The connections between nodes are established using either cable media or wireless media. The best-known computer network is the Internet.Network computer devices that originate, route and terminate the data are called network nodes. Nodes can include hosts such as personal computers, phones, servers as well as networking hardware. Two such devices can be said to be networked together when one device is able to exchange information with the other device, whether or not they have a direct connection to each other.Computer networks differ in the transmission media used to carry their signals, the communications protocols to organize network traffic, the network's size, topology and organizational intent. In most cases, communications protocols are layered on (i.e. work using) other more specific or more general communications protocols, except for the physical layer that directly deals with the transmission media.Computer networks support applications such as access to the World Wide Web, shared use of application and storage servers, printers, and fax machines, and use of email and instant messaging applications.
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