無料更新されたH3C GB0-372-ENUテストエンジン問題には435問あります
ベストな問題集を使おうH3CSE-Routing & Switching GB0-372-ENU専門試験問題
質問 # 249
Two routers are connected together through a LAN to form a VRRP backup group. If router RTA receives a VRRP protocol message sent by router RTB, and the value of the Auth Type field in the message Priority field is 2, then which of the following is correct?
- A. Router RTB enables VRRPV2 protocol
- B. VRRP simple character authentication is enabled on router RTB
- C. Router RTB is the owner of the VRRP IP address
- D. Router RTB enables VRRPV3 protocol
正解：A
質問 # 250
Regarding the compatibility configuration of MSTP, which of the following is correct? (Multiple choice)
- A. Since different vendors have different keys, different summary results may be obtained even if the VLAN instance mappings are the same.
- B. H3C switches can achieve MSTP interoperability with switches from other manufacturers by configuring summary snooping.
- C. When digest snooping is configured, the H3C switch will use the same hash algorithm and key as the peer vendor when performing digest calculations.
- D. When switches from different manufacturers communicate with each other through MSTP, as long as the domain name, revision level, and VLAN instance mapping are configured exactly the same, the switches can be guaranteed to belong to the same MST region.
正解：A、B
質問 # 251
Which of the following statements about BSR and RP in PIMSM is correct? (Multiple choice)
- A. After receiving the C-RP announcement message, the BSR calculates the RP to be selected for each multicast group based on the relationship between the RP and the multicast group, and multicasts the calculation result.
- B. C-RP routers periodically send announcement messages in multicast mode
- C. BSR is generated through an automatic election process between C-BSRs
- D. When C-BSR is elected, the priority is compared first, and then the IP address of the bootstrap message is compared.
正解：C、D
質問 # 252
Based on the type of edge devices, what categories can Overlay networks be divided into? (Multiple choice)
- A. Network Overlay
- B. Hardware Overlay
- C. Host Overlay
- D. Mixed Overlay:
正解：A、C、D
質問 # 253
Which of the following statements about BSR and RP in PIMSM are correct?
- A. There can only be one BSR in a PIMSM domain.
- B. There can be only one C-BSR in a PIMSM domain
- C. There can only be one RP in a PIMSM domain.
- D. There can be only one C-RP in a PIMSM domain.
正解：A
質問 # 254
Two routers are connected together through a 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 vrrp vrid 1 preempt-mode
Vrrp vrid 1 track interface serial0/1 reduced 30
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254 vrrp vrid 1 preempt-mode
If a DOWN/UP event occurs on the RTA serial port Serial0/1 during network operation, what can we learn from the above information?
- A. During the DOWN/UP period of RTA serial port Serial0/1, the router that responds to the ARP request of the LAN PC changes 3 times
- B. During the RTA serial port Serial0/1 DOWN/UP period, the router that responds to the LAN PC ARP request changes once
- C. During the DOWN/UP period of RTA serial port Serial0/1, the router that responds to the ARP request of the LAN PC changes twice
- D. During the DOWN/UP period of the RTA serial port Serial0/1, the router that responds to the ARP request of the LAN PC will not change.
正解：C
質問 # 255
Two routers are connected together through a 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 shut down.
[RTB-GigabitEthernet1/0] display this
IP address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
What can we learn from the above information?
- A. Router RTA is in VRRP Master state, and router RTB is in VRRP Backup state.
- B. Router RTA is in VRRP Master state, and router RTB is in VRRP Master state.
- C. Router RTA is in VRRP Initialize state, and router RTB is in VRRP Master state
- D. Router RTA is in VRRP Backup state, and router RTB is in VRRP Master state
正解：C
質問 # 256
Host PCA, PCB and PCC are connected to Ethernet1/0/1 Ethernet1/0/2 and Ethernet1/0/3 ports of switch SWA respectively, and their addresses are in the same network segment. Checking VLAN on SWA shows the following:
[SWA] display vlan 10
VLAN ID:10
VLAN Type: static
Route Interface: not configured Description: VLAN 0010 Name: VLAN 0010
Tagged Ports: none Untagged Ports: Ethernet1/0/1 Ethernet1/0/24 [SWA] display vlan 20VLAN ID: 20 VLAN Type: static Route Interface: not configured Description: VLAN 0020 Name: VLAN 0020 Tagged Ports: none Untagged Ports:
Ethernet1/0/2Ethernet1/0/24 [SWA] display vlan 30VLAN ID: 30
VLAN Type: static
Route Interface: not configured Description: VLAN 0030 Name: VLAN 0030
Tagged Ports: none Untagged Ports:
Ethernetl/0/1 Ethernetl/0/2 Ethernet1/0/24 From the above output information, we can judge which of the following is correct? (Multiple choice)
- A. PCA can communicate with PCB
- B. PCA can communicate with PCC
- C. PCA, PCB and PCC cannot communicate with each other
- D. PCB can communicate with PCC
正解：B、D
質問 # 257
In SNMPv1 messages, the messages sent from the Agent to the NMS include? (Multiple choice)
- A. GetResponse
- B. GetNextRequest
- C. SetRequest
- D. Trap
- E. GetRequest
正解：A、D
質問 # 258
When the host receives the GeneralQuery message from the IGMPV2 querier?
- A. The destination address of the Report message is 224.0.0.1
- B. The host immediately sends a MembershipReport message
- C. The host will send a Membership Report message only after receiving a General Query.
- D. The destination address of the Report message is the same as the GroupAddress in the message
正解：D
質問 # 259
In a PIM-DM network, the diffusion process of multicast messages is? (Multiple choice)
- A. After receiving the multicast message, the PIM-DM router sends the message out from all interfaces connected to the member hosts.
- B. After receiving the multicast message, the PIM-DM router sends the message out from all interfaces connected to the PIM-DM neighbors.
- C. After receiving the multicast message, the PIM-DM router sends the message out from all interfaces
- D. After receiving the multicast message, the PIM-DM router sends the message out from all non-RPF interfaces connected to the PIM-DM neighbors.
- E. Regardless of whether PIM is running, all routers flood multicast packets.
正解：A、D
質問 # 260
Which of the following statements about the PIM SM registration process are correct?
- A. After the RP receives the multicast forwarding traffic from the multicast source, it forwards the traffic to its downstream interface until it reaches the multicast receiver, forming an RPT from the RP to the multicast receiver along the way.
- B. When the multicast source initially sends traffic, the DR connected to it will encapsulate several empty Register messages to register with the RP
- C. After receiving the source registration message for the first time, RP will send a (*, G) join message to the multicast source and establish a (*, G) table entry along the way.
- D. Unlike the PUSH method of PIM DM, in PIM SM, the multicast source starts sending multicast traffic only when there are downstream receivers.
正解：A
質問 # 261
Which of the following belongs to the access layer function? (Multiple choice)
- A. High-speed packet switching
- B. Complex routing strategies
- C. Has a large number of interfaces for connecting to end-user computers
- D. Access security control
正解：C、D
質問 # 262
In the network shown in the figure, the PIMSM protocol runs between RT1, RT2 and RT3, and the RP is 1.1.1.1. There is a multicast source connected to the downstream interface of RT1 and RT2, and there is a downstream receiver on the RP. Then, when the RP sends a registration stop message, which of the following routers have (S, G) entries? (Multiple choice)
- A. RT3
- B. RT1
- C. RT2
正解：A、B、C
質問 # 263
As shown in the figure, initially link 2 is not connected, and the switches do not enable STP. PCB can send data to PCA. If link 1 fails at this time, the maintenance personnel connect link 2. Which of the following is the correct statement about the recovery process of the data transmission service from PCB to PCA is (assuming that PCA will not actively send data) (Multiple choice)
- A. SWC can immediately forward the data from PCB to PCA to SWB
- B. The default time for PCB to PCA service recovery is 30 seconds
- C. The default time for PCB to PCA service recovery is 300 seconds
- D. SWB's EO/1 interface can immediately enter the forwarding state
正解：C、D
質問 # 264
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