计算机2022思科认证工程师模拟考试系统194

1. [单选题]关于帧中继的说法，正确的是（）

A. 速率最大为1Mbit/s
B. 不提供差错校验功能
C. 可以偷占带宽
D. 数据传输质量高于DDN

2. [单选题]The Ezonexam network administrator has issued the "VTP password ezonexam" command on a Cisco device. What is the purpose of this command?

A. It allows two VTP servers to exists in the same domain, each configured with different passwords
B. It is the password required when promoting a switch from VTP client mode to VTP server mode
C. It is used to access the VTP server to make changes to the VTP configuration
D. It is used to validate the sources of VTP advertisements sent between switches
E. None of the above

3. [多选题]Why is full-duplex Ethernet superior to its single-duplex counterpart? (Select two answer choices.)

A. It uses inexpensive hubs
B. It operates without collisions
C. It operates on switches
D. It provides faster data transfer
E. It utilizes fewer wiring pairs

4. [单选题]通过路由器的“配置端口console”对路由器进行配置，应该使用的线缆为（）

A. 交叉线缆
B. 直通线缆
C. 反转线缆
D. 任意线缆

5. [单选题]哪一个命令可以设置路由器特权用户的“明文密码”（）

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

6. [多选题]Two stations on the Ezonexam LAN transmit at the same time, resulting in a collision. What happens when a collision occurs on the network? (Choose all that apply)

A. Each device on the Ethernet segment stops transmitting for a short time.
B. A jam signal informs all devices that a collision occurred.
C. When data transmission resumes, the devices that were involved in the collision have priority to transmit.
D. The devices that are involved in the collision stops transmitting for a short time.
E. The collision invokes a random back-off algorithm.

7. [单选题]What is the purpose of the Spanning Tree Protocol (STP)?

A. To prevent routing loops
B. To create a default route
C. To provide multiple gateways for hosts
D. To maintain a loop-free Layer 2 network topology
E. To enhance the functions of SNMP

8. [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

9. [单选题]路由表中，某条路由的“路由代码为D”，则表明该路由为（）

A. 直连路由
B. 静态路由
C. IGRP路由
D. EIGRP路由

10. [多选题]在配置帧中继子接口时，在物理接口上应该配置的内容是：()

A. 配置IP地址
B. 封装帧中继协议^{(fr protocol)}
C. 指定子接口类型^{(interface state type)}
D. 设定子接口
E. 配置密码

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