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單項(xiàng)選擇題

In the implementation of VLSM techniques on a network using a single Class C IP address，which subnetmask is the most efficient for point-to-point serial links？（）

A.255.255.255.240
B.255.255.255.254
C.255.255.255.252
D.255.255.255.0
E.255.255.255.248

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單項(xiàng)選擇題

There are no boot system commands in a router configuration in NVRAM.What is the fallback sequence that router will use to find an ios during reload?（）

A.Flash,TFTP server,ROM
B.Flash,NVRAM,ROM
C.ROM,NVRAM,TFTP server
D.NVRAM,TFTP server,ROM
E.TFTP server,Flash,NVRAM

多項(xiàng)選擇題

Cisco自防御網(wǎng)絡(luò)，有以下哪些工具提供安全服務(wù)（）

A.Cisco安全管理器
B.Cisco IOS軟件
C.Cisco安全代理
D.MARS

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