質問 1： In the switching network shown in the figure, VLAN10 is set as lsolate-user-vlan VLAN2 and VLAN3 as the Secondary VLAN of VLAN 10 on switch SWA; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as lsolate-user-vlan, and VLAN4 is the Secondary VLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, which of the following statements are correct?
A. PCA's message comes out from SWA's GigabitEthem1/0/3 port and enters SWB's GigabitEthe1/0/3 port. The VLAN tag it carries is VLAN2.
B. When SWB accesses PCA, the VLAN tag of the message from SWB's GigabitEthem1/0/4 is VLAN 1.
C. SWB's message enters from SWA's GigabitEthem1/0/3 port, and the VLAN tag it carries after exiting from GigabitEthem1/0/1 port is VLAN2
D. PCA's message enters from SWA's GigabitEther1/0/1 port and exits from GigabitEther1/0/3 port without VLAN Tag.
正解：D
質問 2： SWA/SWB/SWC are in the same MSTP region and configured with the same region configuration
Stp region-configuration region-name h3c
Instance 1 vlan 10
Instance 2 vlan 20
Instance 2 vlan 30
Active region-configuration
The ports of the three interconnected links are all Access and belong to the VLANs identified in the figure. The three switches create VLAN virtual interfaces corresponding to the Access links and run OSPF on the virtual interfaces. The IP addresses of the VLAN virtual interfaces are assigned as follows:
SWA: vlan-interface 10 (192.168.10.1); vlan-interface 30 (192.168.30.1) SWB: vlan-interface 10 (192.168.10.2); vlan-interface 20 (192.168.20.1) SWC: vlan-interface 20 (192.168.20.2); vlan-interface 30 (192.168.30.2) When all interconnected ports are UP and STP and OSPF calculations are complete, which of the following descriptions of network connectivity are correct?
A. All interconnected addresses of the three switches are reachable to each other
B. Two of the three switches cannot establish an OSPF neighbor relationship
C. Among the 6 interconnected addresses, at least two interconnected addresses are unreachable to each other
D. The three switches can establish OSPF neighbor relationships between each other
正解：D
質問 3： When an IGMPV2 host leaves a multicast group, it sends a Leave Group message. Which of the following statements is correct? (Multiple choice)
A. The query router sends a specific group query message immediately after receiving the Leave message
B. The destination address of the Leave message is the same as the Group Address in the message
C. The destination address of the Leave message is 224.0.0.2
D. Query the router to delete the multicast group table entry of the relevant Group immediately after receiving the Leave message
正解：A
質問 4： Which of the following mirroring group types are supported by H3CS series switches? (Multiple choice)
A. Remote-destination
B. Remote-source
C. Local
D. Remode
正解：A,B,C
質問 5： The topology is shown in the figure. Perform STP calculation. which of the following is correct?
(Multiple choice)
A. Both ports EO/1 and EO/2 of SWD will receive the configuration BPDU
B. SWA ports EO/1 and EO/2 are both designated ports.
C. Port EO/2 of SWA is the Alternate port
D. sWD port E0/1 is the root port
正解：A,B,D
質問 6： In the switching network shown in the figure, VLAN 10 is set as lsolate-user- vlan on switch SWA, and VLAN 2 and VLAN 3 are secondary VLANs of VLAN 10; VLAN 2 and VLAN 20 are created on switch SWB, and VLAN 20 is set as lsolate-user-vlan, and VLAN 4 is secondary VLAN of VLAN 20. After setting the IP addresses of each device as shown in the figure, which of the following statement is correct?
A. SWB's message enters from SWA's GigabitEthem1/0/3 port, and the VLAN tag it carries after exiting from GigabitEthem1/0/3 port is VLAN20
B. PCA's message enters from SWA's GigabitEthem1/0/1 port and comes out from GigabitEthem1/0/3 port with the VLAN tag VLAN2.
C. PCA's message comes out of SWA's GigabitEthem1/0/ port and enters SWB's GigabitEthem1/0/4 port. The VLAN tag it carries is VLAN20.
D. When SWB accesses PCA, the VLAN tag of the message from SWB's GigabitEthem1/0/4 is VLAN10
正解：C
質問 7： Two switches SWA and SWB are connected together through four Ethernet cables, and the corresponding interfaces on switch SVVA have the following configuration:
[SWA-Ethernet1/0/1] display this duplex full
Speed 10
[SWA-Ethernet1/0/2] display this duplex full
Speed 10
[SWA-Ethernet1/0/3] display this duplex half
Speed 100
[SWA-Ethernet1/0/4] display this duplex half
Speed 100
What can we learn from the above information?
A. Four Ethernet ports are added to the same aggregation group through static aggregation, and the Selected ports are all four ports.
B. Four Ethernet ports are added to the same aggregation group through static aggregation. The selected ports are Ethernet 1/0/3 and Ethernet 1/0/4.
C. Four Ethernet ports are added to the same aggregation group through static aggregation. The selected ports are Ethernet 1/0/1 and Ethernet 1/0/3.
D. Four Ethernet ports are added to the same aggregation group through static aggregation. The selected ports are Ethernet 1/0/1 and Ethernet 1/0/2.
正解：D
質問 8： Regarding the priority marking of IP packets, which of the following is correct? (Multiple choice)
A. 802.1P priority is divided into 4 levels from 0 to 3
B. The TOS field of the current IP packet contains two fields: IP priority and service type, of which IP priority occupies 3 bits.
C. DSCP defines four types of network processes, among which the accelerated forwarding EF class is divided into four subclasses EF1/2/3/4
D. 802.1P priority is identified by the prionity field in the VLAN tag
正解：B,D
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H3CSE-RS-SW 認定 GB0-372-ENU 試験問題:
1. After executing the displayinterface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:
[SWA] display interface Ethernet 1/0/1
Ethernet1/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0 (sec)
Port link-type: trunk
VLAN passing: 1 (default vlan), 10
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
what can we learn from the above information? (Multiple choice)
A) Data frames with VLAN 20 tags can be forwarded from port Ethernet 1/0/1
B) The data frame with VLAN1 tag will be stripped of the tag when it leaves port Ethernet1/0/1
C) Port Ethernet1/0/1 is a Trunk port, allowing data from all VLANs to pass through.
D) Data frames with VLAN10 tags will not be discarded when they enter port Ethernet1/0/1
2. If you need to implement multicast data forwarding in a three-layer network, at least configure which of the following protocols or functions? (Multiple choice)
A) IGMP Snooping function
B) IGMP protocol
C) BSR Configuration
D) PIM protocol
3. In the PIM-DM network shown in Figure 189, some unicast routing tables of routers RT1 and RT2 are as follows:
<RT1>display ip routing-table Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface 10.1.1.0/30 Direct 0010.1.1.2Port1
Then, which of the following are outbound and inbound interface lists of the (S, G) entries of routers RT1 and RT2? (Multiple choice)
A) RT2 outbound interface list: Port2, Port3
B) RT1 outbound interface list: Port2, Port3
C) RT2 inbound interface list: Port1
D) RT1 inbound interface list: Port1
4. Which of the following understandings of VXLAN concepts are correct? (Multiple choice)
A) VXLAN packets will add an additional 50 bytes of overhead on top of the original packets
B) The original message is encapsulated in a TCP message after adding the VXLAN header
C) VXLAN is just a type of overlay technology
D) VTEP is the starting and ending point of the VXLAN tunnel
5. Which of the following statements about the BPDU format of MSTP is correct? (Multiple choice)
A) To calculate CST, only the value of the RSTBPDU field is required
B) If the MST region is regarded as a switch running RSTP logically, the CIST external path cost is equivalent to the root path cost of the RSTP switch.
C) The MSTP BPDU consists of the RSTBPDU field and the MST-specific field.
D) If the MST region is regarded as a switch running RSTP logically, the CIST region root ID is equivalent to the designated bridge ID of the RSTP switch. Usually, this ID is the smallest bridge ID in the MST region.
質問と回答：
質問 # 1
正解： B、C、D | 質問 # 2
正解： B、D | 質問 # 3
正解： B、D | 質問 # 4
正解： A、C、D | 質問 # 5
正解： A、B、C |
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