H3CNE GB0-191

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

1. 要求设置一个子网掩码将一个 B 类网络 172.16.0.0 划分成七个子网,每个子网要容纳的主机数尽可能多,则子网掩码应为 _____ 。（点分十进制形式)略

2. XYZ 公司深圳分公司的路由器的 Serial 0/0 和 Serial 0/1 接口通过两条广域网线路分别连接两个不同的 ISP ,通过这两个 ISP 都可以访问北京总公司的网站 202.102.100.2 ,在深圳分公司的路由器上配置了如下的静态路由:
ip route-static 202.102.100.2 24 Serial 0/0 preference 10
ip route-static 202.102.100.2 24 Serial 0/1 preference 100
那么关于这两条路由的描述哪些是正确的 ? （多选)

A) 两条路由目的地址一样,可以实现主备,其中第一条路由为主
B) 两条路由的优先级不一样,路由器会把优先级高的第二条路由写入路由表
C) 两条路由的 Cost 值是一样的
D) 两条路由的优先级不一样,路由器会把优先级高的第一条路由写入路由表

3. 某 DNS 客户端向本地域名服务器查询 www.sina.com.cn 的 IP 地址,本地域名服务器通常采用那种 DNS 查询方式进行应答 ?

A) 模糊查询
B) 反向查询
C) 递归查询
D) 迭代查询

4. 某网络连接形如:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
两台 MSR 路由器 MSR-1 、 MSR-2 通过各自的 S1/0 接口背靠背互连,各自的 GE0/0 接口分别连接客户端主机 HostA 和 HostB 。其中 HostA 的 IP 地址为 192.168.0.2/24 , MSR-2 的 S0/0 接口地址为 1.1.1.2/30 ,通过配置其他相关的 IP 地址和路由目前网络中 HostA 可以和 HostB 实现互通。
如今客户要求不允许 HostA 通过地址 1.1.1.2 Telnet 登录到 MSR-2 。
那么如下哪些配置可以满足此需求 ? （多选)

A) 在 MSR-1 配置如下 ACL 并将其应用在 MSR-1 的 GE0/0 的 inbound 方向: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl-adv-3000]rule 0 deny tcp source 192.168.0.1 0.0.0.255 destination 1.1.1.2 0.0.0.3 destination-port eq telnet
B) 在 MSR-1 上配置如下 ACL 并将其应用在 MSR-1 的 GE0/0 的 outbound 方向: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl-adv-3000]rule 0 deny tcp source 192.168.0.2 0 destination 1.1.1.2 0 destination-port eq telnet
C) 在 MSR-1 上配置如下 ACL 并将其应用在 MSR-1 的 S1/0 的 inbound 方向: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl-adv-3000]rule 0 deny tcp source 192.168.0.1 0.0.0.255 destination 1.1.1.2 0 destination-port eq telnet
D) 在 MSR-1 上配置如下 ACL 并将其应用在 MSR-1 的 S1/0 的 outbound 方向: [MSR-1]firewall enable [MSR-1]acl number 3000 [MSR-1-acl-adv-3000]rule 0 deny tcp source 192.168.0.2 0 destination 1.1.1.2 0.0.0.3 destination-port eq telnet

5. 两台空配置的 MSR 路由器通过各自的广域网 Serial1/0 接口背靠背直连,其互连网段为 192.0.0.0/24 。
同时两台路由器的通过各自的 GigabitEthernet0/0 连接各自的局域网段用户: HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
在两台路由器上配置 RIPv1 。现在两台路由器上都学习到了对端局域网段的 RIP 路由。
那么如下哪些说法是正确的 ?

A) 可以在两台路由器的广域网接口上配置 RIP RADIUS 验证增强网络安全性
B) 两台路由器之间交互 RIP 报文的方式是广播方式
C) 两台路由器之间的 RIP 报文依然是基于 UDP 传输
D) 如果其中一台路由器的局域网段为 10.0.0.0/24 ,那么在另外一台路由器的路由表将学习到 10.0.0.0/8 的路由

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