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

1. 客户路由器 MSR-1 的以太网口 Ethernet1/0 配置如下:
interface Ethernet0/0
ip address 192.168.0.1 255.255.255.0
该接口连接了一台三层交换机,而此三层交换机为客户办公网络的网段 192.168.7.0/24~192.168.83.0/24 的默认网关所在。
现在客户要求在 MSR-1 上配置 ACL 来禁止办公网络所有用户向 MSR-1 的地址 192.168.0.1 发起 Telnet ,那么下面哪项配置是正确的 ?

A) acl number 3000 rule 0 deny 0.0.0.0 255.255.255.255 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 inbound
B) acl number 3000 rule 0 deny 0.0.0.0 255.255.255.255 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 outbound
C) acl number 3000 rule 0 deny 255.255.255.255 0 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 outbound
D) acl number 3000 rule 0 deny 255.255.255.255 0 destination 192.168.0.1 0 destination-port eq telnet interface Ethernet0/0 ip address 192.168.0.1 255.255.255.0 firewall packet-filter 3000 inbound

2. 以下关于 IP 地址的说法正确的是 ______ 。（多选)

A) A 类地址的第一个字节为 0~126 （ 127 留作他用)
B) IP 地址通常表示为点分十进制形式,例如: 10.110.168.121
C) IP 地址由两部分构成:网络号和主机号
D) 主机号部分二进制全为 1 的 IP 地址称为网络地址,用来标识一个网络的所有主机

3. 在 MSR 路由器上配置了如下 ACL :
acl number 3999
rule permit tcp source 10.10.10.1 255.255.255.255 destination 20.20.20.1 0.0.0.0 time-range lucky
那么对于该 ACL 的理解正确的是 _______ 。（多选)

A) 该 rule 可以匹配来自于任意源网段的 TCP 数据包
B) 该 rule 只在 lucky 时间段内生效
C) 该 rule 只匹配来源于 10.10.10.1 的数据包
D) 该 rule 只匹配去往 20.20.20.1 的数据包
E) 该 rule 可以匹配去往任意目的网段的 TCP 数据包

4. 如图所示,四台 MSR 路由器分别通过以太网、串行接口相连,同时网络中运行 OSPF ,区域划分如图。

已知所有互连链路的 OSPF Cost 值都是一样的,除了 RTB 与 RTC 之间的连接链路是 PPP 之外,其他互连链路都是以太网。那么 ______ 。（多选)

A) 如果 RTD 与 RTC 之间的链路出现故障,那么 RTD 、 RTC 会立即向 RTA 、 RTB 发送 LSA 摘要信息,而不会等待固定的 LSA 更新周期
B) 状态稳定后,四台路由器有同样的 LSDB
C) 网络中至少有三个 DR
D) 网络中至少有三个 BDR

5. NAPT 主要对数据包的 ______ 信息进行转换 ? （多选)

A) 数据链路层
B) 网络层
C) 应用层
D) 传输层

Solutions: