题目内容

MAC address is ( ) bits long.

A. 32
B. 48
C. 128
D. 64

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The following protocols are belonging to multiple access protocols except for ( ).

A. channel partitioning protocols
B. routing protocols
C. random access protocols
D. taking-turns protocols

Which of the following is not belonging to channel partitioning protocols? ( )

A. CSMA
B. FDM
CDMA
D. TDM

In the following four descriptions about CSMA/CD, which one is not correct? ( )

A node listens to the channel before transmitting.
B. If someone else begins talking at the same time, stop talking.
C. A transmitting node listens to the channel while it is transmitting.
D. With CSMA/CD, the collisions can be avoided completely.

( ) provides a mechanism for nodes to translate IP addresses to link-layer address.

A. IP
B. ARP
C. RARP
DNS

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