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H3C Constructing Small - and Medium - Sized Enterprise Network Sample Questions:

1. 以下关于 Trunk 端口、链路的描述错误的是 ______ 。（多选)

A) Trunk 端口的 PVID 值不可以修改
B) Trunk 端口发送数据帧时,若数据帧不带有 VLAN ID ,则对数据帧加上相应的 PVID 值作为 VLAN ID
C) Trunk 链路可以承载带有不同 VLAN ID 的数据帧
D) 在 Trunk 链路上传送的数据帧都是带 VLAN ID 的

2. 要在以太网交换机之间的链路上配置 Trunk ,并允许传输 VLAN 10 和 VLAN 20 的信息,则必须在交换机上配置 ______ 。

A) [Switch-Ethernet0/1] port trunk pvid 10
B) [Switch] port link-type access
C) [Switch] port link-type trunk
D) [Switch-Ethernet0/1] port link-type trunk

3. 以下说法正确的是 ______ 。（多选)

A) CSU （ Channel Service Unit ,信道服务单元):把终端用户和本地数字电话环路相连的数字接口设备。通常它和 DSU 统称为 CSU/DSU 。 CSU 设备包括计算机、协议翻译器以及多路分解器等设备。 DTE 设备包括这些
B) DTE （ Data Terminal Equipment ,数据终端设备)设备指位于用户网络接口用户端的设备,它能够作为信源、信宿或同时为二者。数据终端设备通过数据通信设备（例如,调制解调器)连接到一个数据网络上,并且通常使用数据通信设备产生的时钟信号。调制解调器和接口卡都是 DTE 设备的例子。是 DCE 设备的例子
C) DCE （ Data Circuit Terminating Equipment ,数据通信设备或者数据电路终端设备)设备及其与通信网络的连接构成了网络终端的用户网络接口。它提供了到网络的一条物理连接用于转发业务量,并且提供了一个用于同步 DCE 设备和 DTE 设备之间数据传输的时钟信号。
D) DSU （ Data Service Unit ,数据服务单元):指的是用于数字传输中的一种设备,它能够把 DTE 设备上的物理层接口适配到 T1 或者 E1 等通信设施上。数据业务单元也负责信号计时等功能,它通常与 CSU 一起提及,称作 CSU/DSU 。

4. MSR 路由器上一次 ping 默认发 5 个包,如果想指定发送报文的数目,可使用 ______ 参数。

A) -d
B) -n
C) -c
D) -s

5. 要在路由器上配置一条静态路由。已知目的地址为 192.168.1.0 ,掩码是 20 位,出接口为 GigabitEthernet0/0 ,出接口 IP 地址为 10.10.202.1 ,那么下列配置中哪些是正确的 ?

A) ip route-static 192.168.1.0 255.255.240.0 10.10.202.1
B) ip route-static 192.168.1.0 255.255.240.0 GigabitEthernet0/0
C) ip route-static 192.168.1.0 255.255.248.0 GigabitEthernet0/0
D) ip route-static 192.168.1.0 255.255.248.0 10.10.202.1

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