H3C GB0-372-ENU H3CSE-RS-SW Online Training
H3C GB0-372-ENU Online Training
The questions for GB0-372-ENU were last updated at Feb 18,2025.
- Exam Code: GB0-372-ENU
- Exam Name: H3CSE-RS-SW
- Certification Provider: H3C
- Latest update: Feb 18,2025
In the switching network shown in the figure , VLAN 10 is set as Isolate-user-vlan on switch SWA , and VLAN 2 and VLAN 3 are Secondary VLANs of VLAN 10 ; VLAN 4 and VLAN 20 are created on switch SWB , and VLAN 20 is set as Isolate-user-vlan, and VLAN 4 is Secondary VLAN of VLAN 20. After setting the IP addresses of each device as shown in the figure , check the MAC address table on SWB , and you can determine that SWA belongs to which of the following? 
- A . VLAN 1
- B . VLAN 2
- C . VLAN 3
- D . VLAN 4
- E . VLAN 10
- F . VLAN 20
A customer purchased a router . If the performance indicators of this router are MTBF>Y14 8 years and MTTR<U1, then which of the following is the reliability of this router?
- A . 99.9%
- B . 99.99%
- C . 99.999%
- D . 99.9999%
The customer’s two switches SWA and SWB are connected together through seven Ethernet cables and configured with dynamic link aggregation . The corresponding ports on switch SWA are Ethernet 1/0 Ethernet 1/0/2 , Ethernet 1/0/3 , Ethernet 1/0/4 , Ethernet 1/0/5 , Ethernet 1/0/6 , Ethernet1/0/7
If switches SWA and SWB support only 6 ports per aggregation group, and the SWA switch has the following configuration:
[SWA] interface Ethernet 1/0/7
[SWA-Ethernet1/0/7] lacp port-priority 4096 i
Check the LACP status on the device and the output is as follows:
[SWA] display lacp system-id
Actor System ID: 0x8000,00e1-fc00-5000
[SWB] display lacp system-id
Actor System ID: 0x8000,00e0-fc43-7384
What can we learn from the above information?
- A . When the configuration of each port is consistent, Ethernet1/0/1 port is the Unselected port of the aggregation group.
- B . When all ports are configured the same, Ethernet 1/0/2 is the Unselected port in the aggregation group.
- C . When all ports are configured the same, Ethernet 1/0/6 is the Unselected port in the aggregation group.
- D . When all ports are configured the same, Ethernet 1/0/7 is the Unselected port in the aggregation group.
In the switching network shown in the figure, VLAN10 is set as isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are secondary VLANs of VLAN 10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as isolate-user-vlan, and VLAN4 is the secondary VLA of VLAN20. After setting the IP addresses of each device as shown in the figure, which of the following statement is correct?
- A . The PCA message enters from the GigabitEthem1/0/1 port of SWA and comes out from the GigabitEthem1/0/3 port with the VLAN Tag VLAN 1
- B . PCA’s message comes out of SWA’s GigabitEthem1/0/3 port and enters SWB’s GigabitEthem1/0/4 port. The VLAN tag it carries is VLAN 10.
- C . When SWB accesses PCA, the message from SWB’s GigabitEth1/0/4 does not carry a VLAN Tag
- D . SWB’s message enters from SWA’s GigabitEthem1/0/3 port and leaves from GigabitEthem1/0/1 port with the VLAN tag VLAN10.
The IP address of host PCA is 40.1.1.1, and the MAC address is 0011.1111.11. It is connected to the GigabitEthernet1/0/1 port of the switch. The following commands are configured on the switch:
[H3C] vlan 10 [H3C-vlan10] quit
[H3C] vlan 20
[H3C-vlan20] protocol-vlan ipv4
[H3C-vlan20] quit
[H3C] vlan 30 [H3C-vlan30] quit
[H3C] mac-vlan mac-address 0022-2222-2222 vlan 30
[H3C] vlan 40
[H3C-vlan40] ip-subnet-vlan ip 40.1.1.0 255.255.255.0
[H3C-vlan40] quit
[H3C] interface GigabitEthernet 1/0/1
[H3C-GigabitEthernet1/0/1] port link-type hybrid
[H3C-GigabitEthernet1/0/1] port hybrid pvid vlan 10
[H3C-GigabitEthernet1/0/1] port hybrid vlan 10 20 30 40 untagged
[H3C-GigabitEthernet1/0/1] port hybrid protocol-vlan vlan 20 0
[H3C-GigabitEthernet1/0/1] port hybrid ip-subnet-vlan vlan 40
[H3C-GigabitEthernet1/0/1] mac-vlan enable
After the configuration is complete, which of the following can be determined that PCA will join?
- A . VLAN 10
- B . VLAN 20
- C . VLAN 30
- D . VLAN 40
In the network connection shown in the figure, SWA and SWB both have STP and Loopback-detection enabled. Please confirm that which of the following status description of each port of SWA and SWB is correct?
- A . SWA’s G1/0/1 may be blocked because STP detects a loop.
- B . STP detects a loop between G1/0/2 or G1/0/3 of SWB and blocks one of them.
- C . Loopback-detection detects a loop between G1/0/2 and G1/0/3 of SWB and blocks one of them.
As shown in the figure, SWA and SWB enable STP, and SWC does not enable STP. Initially, link 2 is not connected, and PCB can send data to PCA. If link 1 fails at this time, the maintenance personnel connect link 2. Which of the following statement about the recovery process of data transmission from PCB to PCA is (assuming that PCA will not actively send data) is correct?
- A . Since the SWA link interruption will trigger the topology change process, the MAC address aging time of SWA and SWB will be shortened, so the service recovery takes 15 seconds by default.
- B . Since SWB port EO/1 takes 30 seconds to enter the forwarding state by default, the service takes 30 seconds to recover by default.
- C . When SWB port EO/1 enters the Forwarding state, it triggers the topology change process, so the service will eventually recover in the default time of 30+15=45 seconds.
- D . Service recovery requires waiting for the MAC address of the SWC to age, so the default time is 300 seconds.
In the switching network shown in the figure, VLAN10 is set as Isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN2 and VLAN20 are created on switch SWB, and VLAN20 is set as Isolate-user-vlan, and VLAN4 is set as Secondary VLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, which of the following statement is correct?
- A . PCA’s message enters from SWA’s GigabitEthe1/0/1 port and comes out from GigabitEthem1/0/3 port with the VLAN tag VLAN10.
- B . PCA’s message comes out of SWA’s GigabitEthem1/0/3 port and enters SWB’s GigabitEthem1/0/4 port without a VLAN Tag.
- C . When SWB accesses PCA, the VLAN tag of the message coming out of SWB’s GigabitEthem1/0/4 port is VLAN20.
- D . SWB’s message does not carry VLAN after it comes out of SWA’s GigabitEthernet1/0/3 from GigabitEthem1/0/1 port
Which of the following statements about ring network technology is correct?
- A . Ethernet ring technology is becoming more mature and low-cost. Technologies to solve the Layer 2 network loop problem include RPR and RRPP.
- B . RRPP (Rapid Ring Protection Protocol) is a network layer protocol specifically used for Ethernet rings.
- C . RRPR requires dedicated hardware, so the cost is higher
- D . The convergence time of RRPP is independent of the number of nodes on the ring network and can be applied to networks with larger network diameters.
In PIM-DM networking, which of the following is correct about the router sending the Prune message?
- A . When the router has no local directly connected multicast receiver, it sends a Prune message to all PIM neighbors.
- B . When the outbound interface list in the router (S, G) table is empty, a Prune message is sent to all PIM neighbors.
- C . The party that fails the Assert will send a
- D . After the router interface receives the Prune message, it will no longer send messages of the corresponding multicast group on this interface.
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