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How TCP/IP Works

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Q. What are the principal advantages of TCP/IP’s modular design?

A. Because of TCP/IP’s modular design, the TCP/IP protocol stack can adapt easily to specific hardware and operating environments. Breaking the networking software into specific, well designed components also makes it easier to write programs that interact with the protocol system.

Q. What functions are provided at the Network Access layer?

A. The Network Access layer provides services related to the specific physical network. These services include preparing, transmitting, and receiving the frame over a particular transmission medium, such as an ethernet cable.

Q. Which OSI layer corresponds to the TCP/IP Internet layer?

A. TCP/IP’s Internet layer corresponds to the OSI Network layer.

Q. Why is header information enclosed at each layer of the TCP/IP protocol stack?

A. Because each protocol layer on the receiving machine needs different information to process the incoming data, each layer on the sending machine encloses header information.

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