In the following four descriptions about parity checks, which one is correct? ( )
A. Single-bit parity can detect all errors.
B. Single-bit parity can correct one errors.
C. Two-dimensional parity not only can detect a single bit error, but also can correct that error.
D. Two-dimensional parity not only can detect any combination of two errors, but also can correct them.
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MAC address is ( ) bits long.
A. 32
B. 48
C. 128
D. 64
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.
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