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H3C GB0-372-ENU Exam Overview:

H3C GB0-372-ENU Exam Syllabus Topics:

H3CSE-RS-SW Sample Questions:

1. There are multiple IGMPV2 group member hosts (Client1/Client2/Client3) and multiple IGMPv2 routers (Router1/Router2) in the shared network segment, as shown in the following figure:

Then, which of the following statement is correct? (Multiple choice)

A) After the host receives the general group query message, Client1 sends a Report message to join group A, which will not suppress Client2's Report message to join group B.
B) Router1 and Router2 periodically send general group queries to the shared network segment
C) Only Router2 periodically sends general group queries to the shared network segment
D) After the host receives the general group query message, Client1, Client2, and Client3 may send the same
E) Only Router1 periodically sends general group queries to the shared network segment
F) After the host receives the query message, only Client1 sends a Report message

2. The network topology is shown in the figure. STP is enabled on SWA and SWD. Which of the following statements about the changes in the status of SWA and SWD ports are correct?

A) If the bridge priority of SWD is set to 0, the role of port E0/1 of SWA will change from designated port to root port, and the port will maintain the Forwarding state during the change.
B) SWD port E0/1 will change from a designated port to a root port in the Listening state.
C) If the cost value of the SWD port E0/2 link is changed to 100, port E0/2 will immediately become the new root port and enter the Forwarding state.
D) If the bridge priority of SWD is set to 0, the ports E0/1 and E0/2 of SWD will enter the Forwarding state after the Listening state and the Learning state.

3. Which of the following about IGMP Snooping is correct? (Multiple choice)

A) You can configure both IGMP and IGMP Snooping in the same VLAN.
B) Port fast leave means that when the switch receives an IGMP Leave message, it directly deletes the port from the corresponding forwarding table entry's outbound port list
C) Enabling IGMP Snooping on a Layer 2 device will allow you to create and maintain multicast forwarding entries at the data link layer, thereby forwarding multicast data normally at the data link layer.
D) You can enable the unknown multicast group discard function on the switch. When the switch receives an unknown multicast data packet, it only forwards it to its router port and does not broadcast it within the VLAN.

4. In the switching network shown in the figure, VLAN 10 is set as SuperVLAN on switch SWA, VLAN
2 and VLAN 3 are sub VLANs of VLAN 10, and PCA and PCB are required to be able to communicate with each other. After completing the configuration of switch SWA, after PCA can ping PCB, which of the following description of the ARP table entries on PCA, PCB and switch SWA is correct? (Multiple choice)

A) The ARP entry learned on SWA is: IP Address MAC Address VLAN ID Interface Aging Type 10.1.1.1
0011-1111-11112 Eth1/0/1 20D 10.1.1.20022-2222-22223Eth 1/0/2 20D
B) The ARP entry learned on PCA is: Internet Address Physical Address Type 10.1.1.20022-2222-2222 dynamic
C) None of the above is correct
D) The ARP table entry learned on the PCB is: Internet Address Physical Address Type 10.1.1.100E0- FC0A-0010 dynamic

5. Which of the following statements is correct about the basic concept of MSTP? (Multiple choice)

A) CST refers to a spanning tree between regions, which is obtained by running STP/RSTP between MST regions.
B) By default, all VLANs in the MST region are mapped to the IST
C) When CST is running, the MST region is regarded as a logical switch, and the root bridge of CST is the region to which the total root belongs.
D) IST is a spanning tree in the MST region. The instance number corresponding to IST is 0.

Solutions: