多项选择题
Given the address 192.168.20.19/28, which of the following are valid host addresses on this subnet?（）
A.192.168.20.29
B.192.168.20.16
C.192.168.20.17
D.192.168.20.31
E.192.168.20.0
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相关考题
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单项选择题
在ISDN网络中，U接口定义在（）之间。
A.TE1和NT2
B.TE2和TA
C.NT1和ISDN网络
D.NT1和NT2 -
多项选择题
A national retail chain needs to design an IP addressing scheme to support a nationwide network. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. Working with only one Class B address, which of the following subnet masks will support an appropriate addressing scheme? （）
A.255.255.255.0
B.255.255.255.128
C.255.255.252.0
D.255.255.255.224
E.255.255.255.192
F.255.255.248.0 -
单项选择题
下列是外部网关路由协议的是（）。
A.rip
B.ospf
C.igrp
D.bgp
E.eigrp
