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多項(xiàng)選擇題Which of the following host addresses are members of networks that can be routed across the public Internet? （）

A.10.172.13.65
B.172.16.223.125
C.172.64.12.29
D.192.168.23.252
E.198.234.12.95
F.212.193.48.254

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1.單項(xiàng)選擇題給您分配一個(gè)B類IP網(wǎng)絡(luò)172.16.0.0，子網(wǎng)掩碼255.255.255.192，則您可以利用的網(wǎng)絡(luò)數(shù)為（），每個(gè)網(wǎng)段最大主機(jī)數(shù)（）。

A.512；126
B.102；262
C.102；462
D.256；254
E.192；254

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2.多項(xiàng)選擇題An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location? （）

A.The switch must be configured with an IP address, subnet mask, and default gateway.
B.The switch must be connected to a router over a VLAN trunk.
C.The switch must be reachable through a port connected to its management VLAN.
D.The switch console port must be connected to the Ethernet LAN.
E.The switch management VLAN must be created and have a membership of at least one switch

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3.單項(xiàng)選擇題TCP、UDP、SPX屬于OSI的（）。

A.網(wǎng)絡(luò)層
B.傳輸層
C.會(huì)話層
D.表示層

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4.單項(xiàng)選擇題What is the effect of using the service password-encryption command？（）

A.Onl ypasswords configured afte rthe command has been entered will be encrypted.
B.Only the enable password will be encrypted.
C.Only the enable secret password will be encrypted
D.It will encrypt the secret password and remove the enable secret password from the configuration.
E.It will encrypt all current and future passwords.

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5.多項(xiàng)選擇題Tracert功能是（）。

A.用于檢查網(wǎng)管工作是否正常
B.用于檢查網(wǎng)絡(luò)連接是否可通
C.用于分析網(wǎng)絡(luò)在哪里出現(xiàn)了問題

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