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Week 4 Question

In: Computers and Technology

Submitted By mhayward
Words 356
Pages 2
What are the parts of TCP/IP and what do they do? Who is the primary user of TCP/IP?
TCP performs packetizing: breaking the data into smaller packets, numbering ensuring each packet is reliably delivered, and putting them in the proper order at the destination. IP performs routing and addressing. IP software is used at each of the intervening computers through which the message passes; it is IP that routes the message to the final destination. The TCP software only needs to be active at the sender and the receiver, because TCP is only involved when data comes from or goes to the application layer. TCP/IP is the network layer protocol now used on the Internet. It is also the world’s most popular network layer protocol, used by almost 70 percent of all backbone, metropolitan, and wide area networks. TCP/IP is commonly combined with Ethernet.
Compare and contrast the three types of addresses used in a network.

When users work with application software, they typically use the application layer address. When a user types an Internet address into a Web browser, the request is passed to the network layer as part of an application layer packet formatted using the HTTP standard. The network layer software translates this application layer address into a network layer address.

The network layer then determines the best route through the network to the final destination. Based on this routing, the network layer identifies the data link layer address of the next computer to which the message should be sent. If the data link layer is running Ethernet, then the network layer IP address would be translated into an Ethernet address .

What is a subnet mask?

While it is customary to use the last byte of the IP address to indicate different subnets, it is not required. Any portion of the IP address can be designated as a subnet by using a subnet mask. Every computer in a

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