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H3C GB0-191 Exam Syllabus Topics:

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

1. 在 MSR 路由器上,可以使用 ______ 命令清除 NAT 会话表项。

A) clear nat
B) reset nat table
C) reset nat session
D) clear nat session

2. 下面关于 OSI 参考模型的说法正确的是 ______ 。

A) 数据链路层的数据称为数据包（ Packet )
B) 网络层的数据称为段（ Segment )
C) 物理层的数据称为比特（ Bit )
D) 传输层的数据称为帧（ Frame )

3. 如图所示网络环境中,在 RTA 上执行如下 NAT 配置:

[RTA]acl number 2000
[RTA-acl-basic-2000]rule 0 permit source 100.0.0.0 0.0.0.255
[RTA-acl-basic-2000]nat address-group 1 200.76.28.11 200.76.28.11
[RTA]interface Ethernet0/1
[RTA-Ethernet0/1]nat outbound 2000 address-group 1
配置后, Client_A 和 Client_B 都在访问 Server ,则此时 RTA 的 NAT 表可能为 ______ 。

A) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.12 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
B) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: NOPAT, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
C) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.12 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51
D) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76.28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0 , status: 11, TTL: 00:01:00, Left: 00:00:51

4. 客户的网络连接形如:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
该网络已经正确配置了 IP 地址和路由,目前网络中 HostA 可以和 HostB 实现互通。
出于某种安全考虑,客户要求 HostB 不能 ping 通 HostA ,但同时 HostA 可以 ping 通 HostB ,且 HostA 与 HostB 之间的其他报文传递不受限制,那么如下哪些说法是正确的 ? （多选)

A) 使用 ping 命令时两主机之间的 ICMP 报文是双向的,这个单项互通的需求无法实现
B) 仅在 MSR-2 上配置 ACL 就可以实现此需求
C) 仅在 MSR-2 上配置 ACL 无法实现此需求
D) 仅在 MSR-1 上配置 ACL 就可以实现此需求
E) 仅在 MSR-1 上配置 ACL 无法实现此需求

5. 下面对 PPP PAP 验证的描述,正确的是 ______ 。（多选)

A) PAP 的用户名和密码都是明文的
B) PAP 的用户名是密文的,密码是明文的
C) PAP 的用户名是明文的,但是密码是机密的
D) PAP 验证是一个二次握手协议

Solutions: