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H3C GB0-371-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: High Availability Protocols | 15% | - VRRP principle and configuration - Smart Link and Monitor Link - BFD and fast convergence |
| Topic 2: Campus Network Architecture and Design | 20% | - Campus network hierarchical model - High-performance campus network requirements - Network planning and design principles |
| Topic 3: VLAN Technology and Deployment | 20% | - VLAN fundamentals and configuration - Trunk, Hybrid, and Access ports - Super VLAN and Isolate-user-VLAN - VLAN mapping and VLAN translation |
| Topic 4: Campus Network Security and Management | 10% | - Basic QoS and traffic control - DHCP Snooping, ARP protection, IPSG - Port security and MAC address management |
| Topic 5: Multicast Technology | 15% | - PIM-DM/PIM-SM operation - IP multicast basics - IGMP and IGMP Snooping |
| Topic 6: Spanning Tree Protocols | 20% | - Loop prevention and protection features - STP/RSTP/MSTP principles - MSTP configuration and optimization |
H3C Constructing H3C High-Performance Campus Networks Sample Questions:
1. As the above topology, the loop formed by SWA, SWB and SWC enables STP, then the following statement is correct:
A) After the STP converges, connect the SWD to the network through the dotted link 1 in the figure, and the SWD will first send the configuration BPDU with itself as the root, and the SWB will immediately respond to the configuration BPDU with the SWA as the root.
B) Before joining SWD, after STP converges, SWC will receive configuration BPDUs from both E0/1 and E0/2
C) After the STP converges, connect the SWD to the network through the dotted link 1 in the figure, then the SWD will first send the configuration BPDU with itself as the root, and after the longest Hello Time, the SWC will send the SWD the configuration with the SWA as the root BPDU
D) Before joining SWD, after STP convergence, SWB port E0/2 is an alternate port
2. When the IGMPV2 host leaves a multicast group, it will send a LeaveGroup message, which is correct as follows:
A) The destination address of the Leave message is 224.0.0.2
B) The destination address of the Leave message is the same as the GroupAddress address in the message
C) The query router immediately deletes the multicast group entry of the related Group after receiving the Leave message
D) The query router immediately sends a specific group query message after receiving the Leave message
3. Regarding the comparison of RSTP and STP BPDU format, the following statements are correct:
A) The TCA bit is not used in the topology change process defined by RSTP
B) In the RST BPDU, the 8 bits of the Flags field have actual meanings
C) In the RST BPDU, the P/A flag in the Flags field is used for the root port fast switching mechanism
D) RSTP does not separately define the BPDU type for the topology change process
4. As shown in the networking, initially Link 2 is not connected, and STP is not enabled on the switches, and the PCB can send data to PCA. If Link 1 fails at this time, the maintenance staff connects Link 2 to the PCA. The restoration process of the transmission service is correct (assuming that the PCA will not actively send data)
A) It will take 300 seconds for the business from PCB to PCA to resume by default
B) It will take 30 seconds for the business from PCB to PCA to resume by default
C) SWC can immediately forward the data from PCB to PCA to SWB
D) SWB's E0/1 interface can immediately enter the forwarding state
5. The two routers are connected together through the LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1/0] display this
ip address 192.168.0.252 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
vrrp vrid 1 priority 120
shutdown
[RTB-GigabitEthernet1/0]display this
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
It can be known from the above information
A) Router RTA is in VRRP Master state, router RTB is in VRRP Master state
B) Router RTA is in VRRP Initialize state, router RTB is in VRRP Master state
C) Router RTA is in VRRPBackup state, router RTB is in VRRP Master state
D) Router RTA is in VRRPMaster state, router RTB is in VRRP Backup state
Solutions:
| Question # 1 Answer: A,B | Question # 2 Answer: A,D | Question # 3 Answer: A,B,D | Question # 4 Answer: A,D | Question # 5 Answer: B |
