未分类题

Wireless telecommunications networks are generally implemented and administered using()communication.This implementation takes place at the ()level of OSI model network structure.
A.microwave B.radio C.FM D.AM
A.physical B.link C.network D.transport

A.This
B.
A.microwave
C.radio
D.FM
E.AM
A.physical
F.link
G.network
H.transport


【参考答案】

B,A