题目内容

FDM can be very efficient under certain circumstances

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FDM and TDM are both dynamic allocation approaches.

Dynamic channel allocation can avoid the waste of bandwidth.

Which approach can reduce the waste of IPv4 address.

A. CIDR
B. Subnetting
C. NAT
D. PAT

Which IP address is a network address?

A. 172.16.0.0
B. 127.16.255.255
C. 127.0.0.1
D. 127.0.0.0