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H3C GB0-371 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| IP Routing in Campus Networks | - Routing fundamentals
|
| Campus Network Architecture and Design | - Network topology design
|
| Network Operations and Troubleshooting | - Monitoring and maintenance
|
| Layer 2 Switching Technologies | - VLAN and segmentation
|
| Network Security and Policy Control | - Access control mechanisms
|
| Redundancy and High Availability | - Link and device redundancy
|
H3C Constructing H3C High-Performance Campus Networks Sample Questions:
Question 1
在如图所示的交换网络中,三台交换机都只有缺省 VLAN1 ,三台交换机的互联端口都为 Trunk ,且允许所有 VLAN 通过,三台交换机都开启了全局和端口的 GVRP 功能在交换机 SWA 上创建了 VLAN10 ,在 SWC 上创建了 VLAN20 ,并且在交换机 SWA 上设置 Ethemet1/0/1 端口的 GVRP 注册模式为 Fixed ,在三台交换机査看各 Trunk 端口状态信息,下面显示正确的是（选择一项或多项)
A. [SWB]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
B. [SWC]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
C. [SWA]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
D. [SWB]display interface Ethernet 1/0/2 Ethernetl/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
Question 2
下列关于 PIM SM 注册抑制定时器的表述,正确的有（选择一项或多项)
A. 组播源的 DR 路由器会维护一个注册抑制定时器,若定时器超时, DR 会向 RP 单播组播源注册消息
B. RP 收到 DR 的注册消息后,会发送注册停止消息,并更新本地的（ S , G )和（ * , G )表项
C. DR 收到注册停止消息后,会更新注册抑制定时器,并继续以组播方式发送数据
D. 为避免注册抑制定时器超时, DR 会在定时器超时前,将封装了组播数据的 Register 消息发往 RP
Question 3
中高端交换机设备自身具备冗余性如果客户网络中某台核心交换机的双主控板主备冗余热备份,交流电源 2 +1 冗余热备份,而风扇系统 1:1 热备份,则下列操作中,可能对客户网络产生重大影响的是
A. 拔出 1 个风扇
B. 拔出备用主控板
C. 拔出 2 个电源
D. 拔出业务板
Question 4
下列关于 PIMSM 共享网段 DR 的表述,正确的有
A. 组播源侧的 DR 必须运行 IGMP ,否则接收者侧的接收者不能收到组播流量
B. 组播源侧的 DR 负责向 RP 发送注册报文
C. 只有当接收者侧有多台路由器连到该共享网段,且路由器运行 IGMPV1 时,才需要进行 DR 选举
D. 接收者侧的 DR 负责向 RP 发送加入报文
Question 5
下列关于 PIM 加入过程的表述,正确的有
A. PIMSSM 中 DR 的组播加入路径是从源到 DR 的最优转发路径
B. PIMDM 中 DR 的组播加入路径是从源到 DR 的最优转发路径
C. PIMSM 中 RP 的组播源加入路径是从源到 RP 的最优转发路径
D. PIMSM 中 DR 的组播加入路径是从源到 DR 的最优转发路径
Solutions:
| Question 1 Answer: B | Question 2 Answer: A,C | Question 3 Answer: C,D | Question 4 Answer: B,D | Question 5 Answer: A,C |
