In the following descriptions about MAC address, which one is not correct? ( )
A. The MAC address is the address of one node’s adapter.
B. No two adapters have the same MAC address.
C. The MAC address doesn’t change no matter where the adapter goes.
D. MAC address has a hierarchical structure.
查看答案
The ARP protocol can translate ( ) into ( ). ( )
A. host name, IP address
B. host name, MAC address
C. IP address, MAC address
D. broadcast address, IP address
In the following four options, which service can not be provided by switch? ( )
A. filtering
B. self-learning
C. forwarding
D. optimal routing
The ability to determine the interfaces to which a frame should be directed, and then directing the frame to those interfaces is( ).
A. filtering
B. forwarding
C. self-learning
D. optimal routing
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.
微信支付 
支付宝支付