單項(xiàng)選擇題如果C類子網(wǎng)的掩碼為255.255.255.240,則包含的子網(wǎng)位數(shù)、子網(wǎng)數(shù)目、每個(gè)子網(wǎng)中的主機(jī)數(shù)目正確的是()。

A.2.2.2
B.3.6.30
C.4.14.14
D.5.30.6


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B.It is globally significant
C.It is needed to identify a unique instance of an OSPF database
D.It is an optional parameter required only if multiple OSPF processes are running on the router
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2.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
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F.212.193.48.254

4.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.
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5.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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