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

1. 某网络连接如下所示:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
客户要求仅仅限制 HostA 与 HostB 之间的 ICMP 报文,如下哪些做法是可行的 ? （多选)

A) 在 MSR-1 上配置 ACL 禁止源主机 HostB 到目的主机 HostA 的 ICMP 报文,并将此 ACL 应用在 MSR-1 的 GE0/0 的 outbound 方向
B) 在 MSR-1 上配置 ACL 禁止源主机 HostA 到目的主机 HostB 的 ICMP 报文,并将此 ACL 应用在 MSR-1 的 GE0/0 的 outbound 方向
C) 在 MSR-1 上配置 ACL 禁止源主机 HostB 到目的主机 HostA 的 ICMP 报文,并将此 ACL 应用在 MSR-1 的 S1/0 的 outbound 方向
D) 在 MSR-1 上配置 ACL 禁止源主机 HostA 到目的主机 HostB 的 ICMP 报文,并将此 ACL 应用在 MSR-1 的 S1/0 的 outbound 方向

2. 以下关于广域网的说法,错误的是 ______ 。

A) HDLC 协议只支持点到点链路,不支持点到多点链路。
B) 当 CE1/PRI 接口使用 E1 工作方式时,它相当于一个不分时隙、数据带宽为 2Mbps 的接口,其特性与同步串口相同,支持 PPP 、帧中继、 LAPB 和 X.25 等数据链路层协议,支持 IP 和 IPX 等网络协议。
C) 当 CE1/PRI 接口使用 CE1/PRI 工作方式时,它在物理上分为 32 个时隙,对应编号为 0~31 ,其中 0 时隙用于传输同步信息。
D) HDLC 协议可以封装在同步链路上,也可以封装在异步链路上。只支持同步

3. 在 MSR 路由器上,如果想查看 NAT 转换的报文数量,应该使用 ______ 命令。

A) display acl
B) display nat
C) display nat counter
D) display nat session

4. 路由器 MSR-1 、 MSR-2 通过各自的 GigabitEthernet0/0 互连,同时两台路由器之间运行了 RIP ,目前 RIP 已经正确完成了远端路由学习,现在在 MSR-1 的路由表中看到如下的路由信息:
Destination/Mask Proto Pre Cost NextHop Interface
2.0.0.0/24 RIP 100 15 100.1.1.1 GE0/0
6.0.0.0/8 RIP 100 1 100.1.1.1 GE0/0
那么据此信息可以推测 ______ 。

A) 第一条目的网段为 2.0.0.0/24 的路由依然是一条有效路由
B) 第一条目的网段为 2.0.0.0/24 的路由 Cost 已经达到最大值,是一条无效路由
C) 可以确认两台路由器之间运行是 RIPv1
D) 可以确认两台路由器之间运行的是 RIPv2

5. OSI 参考模型具有以下哪些优点 ? （多选)

A) 以上说法均不正确。
B) OSI 参考模型是对发生在网络设备间的信息传输过程的一种理论化描述,并且定义了如何通过硬件和软件实现每一层功能。
C) OSI 参考模型提供了设备间的兼容性和标准接口,促进了标准化工作。
D) OSI 参考模型的一个重要特性是其采用了分层体系结构。分层设计方法可以将庞大而复杂的问题转化为若干较小且易于处理的问题。

Solutions: