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H3C GB0-372 Exam Syllabus Topics:
| Section | Weight | Objectives |
| Topic 1: Layer 2 Switching Technologies | 15-20% | - Link aggregation and LACP
- Port isolation and storm suppression
- VLAN and VLAN mapping
- STP/RSTP/MSTP protocols and configuration
|
| Topic 2: Layer 3 Switching and Routing Protocols | 20-25% | - OSPF principles, configuration and troubleshooting
- Policy-based routing
- VLAN interface and IP addressing
- Static routing and RIP
|
| Topic 3: High Reliability and Performance Technologies | 10-15% | - Traffic management and QoS
- Stack and IRF virtualization
- BFD and link detection
- VRRP protocol and configuration
|
| Topic 4: Switch Security Technologies | 10-15% | - Port security and 802.1X
- DHCP Snooping
- IP Source Guard
- Dynamic ARP Inspection
|
| Topic 5: Multicast Technology | 10-15% | - Multicast deployment and optimization
- PIM-SM/PIM-DM
- Multicast basic concepts
- IGMP protocol
|
| Topic 6: Campus Network Architecture and Design | 10-15% | - Campus network hierarchical model
- High availability design
- Design principles and requirements
|
H3CSE-RS-SW Sample Questions:
关于单播、组播和广播的对比,正确的有
- A. 和广播相比,组播可以减轻发送源的负担
- B. 和单播相比,组播可以减少链路负载
- C. 和广播相比,组播可以提升链路使用率
- D. 和单播相比,组播可以减轻发送源的负担
Reveal Solution
Discussion
关于 IGMPV2 消息报文的目的 IP 地址和协议报文中的组地址( Group Address )字段填充正确的是

- A. 成员 Report 报文的目的 IP 地址与报文中的组地址相同
- B. 特定组查询报文的目的 IP 地址与报文中的组地址相同
- C. 成员 Leave 报文的目的 IP 地址与报文中的组地址相同
- D. 通用组查询报文的目的 IP 地址为 224.0.0.1 ,报文中的组地址字段为 0.0.0.0
Reveal Solution
Discussion
如图,最初 SWA 通过 EO/1 和 SWB 相连, SWB 通过端口 EO/2 和 SWC 相连, SWA 和 SWC 没有直接相连启用 STP 并等待其收敛后,将 SWA 和 SWC 连接,由此导致交换机端口 STP 状态的变化,关于此变化的正确描述有

- A. SWC 的端口 E0/2 会从 Listening 状态直接进入 Forwarding 状态
- B. SWA 的端口 E0/2 和 SWC 的端口 E0/1 都将在 Listening 状态和 Learning 状态各停留一个 Forward Delay 时长
- C. SWB 的端口 E0/2 会从 Forwarding 状态直接进入 Blocking 状态
- D. SWB 的端口 E0/2 和 SWC 的端口 E0/2 都将在 Listening 状态和 Learning 状态各停留一个 Forward Delay 时长
Reveal Solution
Discussion
客户的局域网交换机 SWA 通过 GigabitEthenet 2/0/1 连接 SWB 、通过 GigabitEthernet 2/0/2 连接 SWC 且 SWA 交换机有如下配置:
[SWA] stp region-configuration
[SWA-mst-region] instance 0 vlan 1 to 100[SWA-mst-region] instance 2 vlan 101 to 200[SWA] smart-link group 1
[SWA-smlk-group1 ] protected-vlan reference-instance 0 [SWA-smlk-group1] port gigabitethernet 2/0/1 master[SWA-smlk-group1 ] port gigabitethernet 2/0/2 slave [SWA] smart-link group 2
[SWA-smlk-group2] protected-vlan reference-instance 2 [SWA-smlk-group2] port gigabitethernet 2/0/2 master[SWA-smlk-group2] port gigabitethernet 2/0/1 slave
L 口果 SWA 、 SWB 、 SWC 连接口允许所有 VLAN 通过,从上述信息可以得知
- A. SWA 交换机 VLAN2 流量将通过 Gigabitethernet 2/0/2 上行
- B. SWA 交换机 VLAN2 流量将通过 GigabitEthernet 2/0/1 上行
- C. SWA 交换机 VLAN102 流量将通过 GigabitEthe 2/0/2 上行
- D. SWA 交换机 VLAN102 流量将通过 Gigabitethernet 2/0/1 上行
Reveal Solution
Discussion
下列关于 PIM SM 的表述,正确的有
- A. 在收到组播源的注册消息时, RP 向组播源方向发送加入消息,待收到组播源正常组播转发来的流量时才生成( S , G )表项
- B. RP 只有在接收到组播源组播转发的数据后,才会向下游转发组播流量
- C. 组播源初始发送流量时,与之相连的 DR 上会形成( S , G )表项
- D. 组播流量从 RP 正常转发至组播接收者之前,沿途路由器都已建立起了( * , G )表项
Reveal Solution
Discussion