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多項(xiàng)選擇題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

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1.單項(xiàng)選擇題下列是外部網(wǎng)關(guān)路由協(xié)議的是（）。

A.rip
B.ospf
C.igrp
D.bgp
E.eigrp

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2.單項(xiàng)選擇題IP地址中，網(wǎng)絡(luò)部分全0表示（）。

A.主機(jī)地址
B.網(wǎng)絡(luò)地址
C.所有主機(jī)
D.所有網(wǎng)絡(luò)

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3.單項(xiàng)選擇題On point-to-point networks, OSPF hello packets are addressed to which address（）。

A.127.0.0.1
B.172.16.0.1
C.192.168.0.5
D.223.0.0.1
E.224.0.0.5
F.254.255.255.255

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4.單項(xiàng)選擇題改變您的Quidway路由器名字為myrouter時(shí)，應(yīng)輸入什么命令？（）

A.config myrouter
B.display myroter
C.sysname myrouter

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5.多項(xiàng)選擇題 Which of the following statements describe the network shown in the graphic?（）

A.There are two broadcast domains in the network.
B.There are four broadcast domains in the network.
C.There are six broadcast domains in the network.
D.There are four collision domains in the network.
E.There are five collision domains in the network.
F.There are seven collision domains in the network.

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