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H3C Constructing H3C High-Performance Campus Networks Sample Questions:
1. 如图所示的网络中,在交换机 SWA 上完成相应配置,且交换机 SWA 和各 PC 都学习到了相应的 ARP 表项 PCA 访问 PCB 发送了 ICMP 请求报文,交换机 SWA 向 PCB 转发此报文时,报文的源 IP 地址为
A) 10.1.1.2
B) 10.1.1.1
C) 20.1.1.2
D) 20.1.1.1
2. 在交换机 SWA 上执行 displayinterface Ethernet 1/0/1 命令后,输出信息如下:
[SWA]display interface Ethernet 1/0/1
Ethernetl/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0(sec)
Port link-type: trunk
VLAN passing: 1 (default vlan), 10
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
从以上输出可以判断
A) 端口 Ethernet1/0/1 是一个 Trunk 端口,允许所有 VLAN 的数据侦通过
B) 带有 VLAN10 标签的数据帧进入端口 Ethernet1/0/1 时不会被丢弃
C) 带有 VLAN20 标签的数据帧可以从端口 Ethernet1/0/1 转发出去
D) 带有 VLAN1 标签的数据帧离开端口 Ethernet1/0/1 时会被剥离标签
3. 在 NTP 客户端和服务器模式中,下列哪种 NTP 验证组合可以成功同步 ?
A) NTP 客户端使能验证,服务器端没有使能验证
B) NTP 客户端和服务器都使能验证
C) NTP 客户端未使能验证,服务器端使能验证
D) NTP 客户端和服务器都未使能验证
4. 关于 RSTP 和 STP 的关系,说法正确的有
A) RSTP 可以在 STP 的基础之上实现不同 VLAN 的数据在 Trunk 链路上的负载分担
B) 运行 RSTP 的交换机可以和运行 STP 的交换机协同工作,并改善 STP 的收敛时间
C) RSTP 具备 STP 的所有功能,但其仅使用了一种类型的 BPDU
D) RSTP 在旧 EE802.1 D 标准中定义,其协议思想和 STP 相同,但在收敛时间上作了改进
5. 在交换机 SWA 上执行 display interface Ethernet 1/0/1 命令后,输出信息如下 :
[SWA]display interface Ethernet 1/0/1
Ethernetl/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0(sec)
Port link-type: trunk
VLAN passing: 1 (default vlan), 10
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
从以上输出可以判断
A) 带有 VLAN1 标签的数据侦进入端口 Ethemet1/0/1 时会被丢弃
B) 带有 VLAN10 标签的数据帧离开端口 Ethemet1/0/1 时会被剥离标签
C) 带有 VLAN10 标签的数据帧进入端口 Ethernet1/0/1 时会被丢弃
D) 带有 VLAN20 标签的数据帧不能从端口 Ethemet1/0/1 转发出去
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A,B | Question # 3 Answer: B,C,D | Question # 4 Answer: C | Question # 5 Answer: B,D |
