2022计算机类考试思科认证考前模拟考试284

1. [单选题]下列哪一个通配符掩码与子网172.16.64.0/27的所有主机匹配（）。

A. 255.255.255.0
B. 255.255.224.0
C. 0.0.0.31
D. 0.0.31.255

2. [单选题]关于静态NAT，下面（）说法是正确的。

A. 静态NAT转换在缺省情况下24小时后超时
B. 静态NAT转换从地址池中分配
C. 静态NAT将内部地址一对一^{(one to one)}静态映射到内部全局地址
D. CISCO路由器缺省使用了静态NAT

3. [单选题]路由器的配置文件startup-config存放在()里

A. RAM
B. ROM
C. FLASH
D. NVRAM

4. [单选题]配置路由器特权用户“加密密码”的命令是：()

A. password
B. enable password
C. enable secret
D. passwd

5. [单选题]路由器上，命令“show int s0”的显示结果为：Serial0 is up,line protocol is down出现该结果的可能原因是（）

A. 端口处于关闭状态
B. 物理端口被烧毁
C. 两端设备协议不一致
D. 路由表中无路由

6. [多选题]在路由器上，可以使用的命令有：()

A. ping
B. show interfaces
C. show ip route
D. ipconfig
E. wincfg

7. [单选题]为了连接“帧中继^{(frame relay)}”线路，网络中的路由器需要提供的端口类型为（）

A. FastEthernet
B. Serial
C. BRI
D. Ethernet

8. [单选题]路由器当前的模式为“端口模式”，要退回到“特权模式”，应该使用的快捷键^{(shortcut key)}为（）

A. ctrl+b
B. ctrl+z
C. ctrl+c
D. ctrl+p

9. [单选题]When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?

A. when all switches have the same BID as the root switch
B. when all switches have received the MAC address of each neighboring switch
C. when every enabled switch port has been assigned a unique identifier
D. when every operating switch port is in either the blocking or forwarding state
E. when all switches are in either client, server, or transparent mode

10. [多选题]What are two results of entering the VESwitch(config)# vtp mode client command on a Catalyst switch in the Ezonexam LAN? (Choose two.)

A. The switch will ignore VTP summary advertisements
B. The switch will forward VTP summary advertisements
C. The switch will process VTP summary advertisements
D. The switch will originate VTP summary advertisements
E. The switch will create, modify and delete VLANs for the entire VTP domain

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