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简答创办你的企业第一至第十步的主要内容。

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What is the name of a network-layer packet?

A. message
B. segment
C. datagram
D. frame

What are the two most important network-layer functions in a datagram network?

A. forwarding & routing
B. forwarding & filtering
C. routing & detecting
D. routing & checking

When a packet arrives at a router’s input link, the router must move the packet to the appropriate output link, this action is called ____?

A. Forwarding
B. routing
C. cut through
D. filtering

A router forwards a packet by examining the value of a field in the arriving packet’s header, and then using this value to index into the router’s forwarding table, this value is?

A. destination IP address
B. source IP address
C. destination MAC address
D. source MAC address

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