2022思科认证证书模拟考试练习题268

1. [单选题]A new Ezonexam switch is installed into an existing LAN and a new VTP trunk is set up with an existing switch. Which VLANs will be allowed on this new trunk?

A. All defined VLANs are allowed on the trunk by default.
B. Each VLAN, or VLAN range, that is specified with the switchport mode command.
C. Each VLAN, or VLAN range, that is specified with the vtp domain command.
D. Each VLAN, or VLAN range, that is specified with the vlan database command.
E. None of the above

2. [单选题]路由器下，由一般用户模式进入特权用户模式的命令是：（）

A. enable
B. config
C. interface
D. router

3. [单选题]路由器上端口fa0/0,其最大传输速率是（）Mbit/s

A. 128
B. 10
C. 100
D. 1000

4. [单选题]把访问权限表应用到路由器端口的命令是：()

A. permit access-list 101 out
B. ip access-group 101 out
C. apply access-list 101 out
D. access-class 101 out

5. [多选题]Which of the following steps are necessary in order to add a new VLAN to the Ezonexam switched network? (Select all that apply)

A. Create the VLAN.
B. Name the VLAN.
C. Configure an IP address for the VLAN.
D. Add the desired ports to the new VLAN.
E. Add the VLAN to the VTP domain.

6. [单选题]下面哪个操作可以使访问控制列表真正生效（）。

A. 将访问控制列表应用到接口上
B. 定义扩展访问控制列表
C. 定义多条访问控制列表的组合
D. 用access-list命令配置访问控制列表

7. [单选题]TCP23是（）协议端口号^{(port number)}；UDP69是（）端口号^{(port number)}；TCP80是（）端口号^{(port number)}。

A. TELNET FTP HTTP
B. FTPT FTP HTTP
C. TELNET TFTP HTTP
D. TELNET DNS HTTP

8. [单选题]路由器上的命令“show version”的功能是（）

A. 显示版本信息
B. 显示端口配置信息
C. 显示路由表
D. 显示路由协议信息

9. [多选题]下列哪一设备工作时，要用到OSI的七个层（一层到七层）（）

A. PC
B. 网管机
C. WEB服务器
D. 交换机
E. 路由器

10. [单选题]On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)

A. The destination host sends a request to the source for retransmission.
B. The jam signal indicates that the collision has been cleared.
C. The hosts will attempt to resume transmission after a time delay has expired.
D. An electrical pulse indicates that the collision has cleared.
E. The router on the segment will signal that the collision has cleared.
F. F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.

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