单项选择题

71 in the strength of the carrier signal is varied to represent binary 1 or 0.
72 is a system that can map a name to an address and conversely an address to an name.
73 is a three-way handshaking authentication protocol that it"s packets are encapsulated in the point-to-point protocol
74 is an approach that enables an ATM Switch to behave like a LAN switch.
75 is an guided media which is made of glass or plastic and transmits signals in the form of light.

A.NAT
B.NCP
C.DDN
D.DNS
题目列表

你可能感兴趣的试题

微信扫码免费搜题