[2022年03月06日] 無料Huawei Other Certification H12-821_V1.0公式認定ガイドPDFダウンロード
Huawei H12-821_V1.0公式認定ガイドPDF
質問 11
As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?
- A. After a port is Configured as an edge port, the port can quickly enter the Forwarding state.
- B. Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.
- C. You can enable the edge port on SWC's GE0/0/2 connected to the terminal so that this port can quickly enter the forwarding state.
- D. You can enable the edge port on SWD's GEO/0/2 connected to the terminal so that this port can quickly enter the Forwarding state.
正解: A
質問 12
To inject IGP routes into BGP routes, you can only use the network command.
- A. TRUE
- B. FALSE
正解: B
質問 13
Which of the following statements regarding the BGP error display of a router false?
- A. The neighbor address of this router is 10.1.1.5.
- B. Error Type indicates that the BGP error is caused by the neighbor relationship error.
- C. The error occurred at 12:40:39 on March 22, 2010.
- D. The error may be caused by the incorrect neighbor address.
正解: B
質問 14
Regarding the route-policy set-cost configuration below, which of the following statements is true?
- A. The route 11.1.0.0/16 is permitted by node 10, and its tost Is set to 300.
- B. The cost of all routes is set to 200.
- C. The route 11.1.0.0/16 will continue to match node 20 after permitted by node 10, and (he final cost is set to 200.
- D. All the routes that are not permitted by node 10 will be denied.
正解: A
質問 15
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?
- A. 1.1.1.2/16
- B. 1.1.1.1/24
- C. 1.1.1.1/32
- D. 1.1.1.1/26
正解: B
質問 16
An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?
- A. 75s
- B. 90s
- C. 20s
- D. 60s
正解: C
質問 17
Which of the following statement regarding the display ospf peer command output is true?
- A. The DR address is 10.1.1.1
- B. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.
- C. Through negotiation during DD packet exchange, the local end becomes the slave.
- D. Router ID indicates that the local router ID Is 10.1.1.1.
正解: B
質問 18
Which of the following attribute must be carried in an Update message?
- A. MED
- B. Local-pref
- C. AS-Path
- D. Prefval
正解: B
質問 19
Which of the following statements regarding the firewall zone security level is false?
- A. The configured security level cannot be changed.
- B. Two zones cannot be configured with the same security level.
- C. The default security level of the new zone is 1.
- D. Only the security level of the user-defined zone can be configured.
正解: A
質問 20
If a router ID is configured in both the system via and the BGP view, BGP uses the router ID configured in the BGP view because the BGP view takes precedence over the system view.
- A. TRUE
- B. FALSE
正解: B
質問 21
In BGP, the origin attribute of the routes imported using the import-route command is incomplete.
- A. TRUE
- B. FALSE
正解: A
質問 22
Which of the following attacks is not the network layer attack?
- A. Smurf attack
- B. ARP spoofing attack
- C. IP spoofing attack
- D. ICMP attack
正解: B
質問 23
Which of the following configurations are not mandatory when an administrator configures VRRP?
- A. Preemption delay
- B. Virtual router priority
- C. Preemption mode
- D. Virtual IP address
正解: D
質問 24
Which of the following statements about multicast packet forwarding is true?
- A. IGMP snooping cannot control the scope of multicast traffic flooding on a Layer 2 network.
- B. In multicast transmission, the destination address of a packet can be the unicast address of a host.
- C. If a multicast data packet fails the RPF check, the packet must have been received through a sub-optimal interface. However, this interface still receives and forwards the multicast traffic downstream.
- D. The source address of a multicast packet is a unicast address.
正解: C
質問 25
In the OSPF protocol, inter-area route calculation involves only Router LSA, Network LSA, and Summary LSA.
- A. TRUE
- B. FLASE
正解: A
質問 26
Which of the following TLVs is used by ISIS to describe the IP address of an interface?
- A. 0
- B. 1
- C. 2
- D. 3
正解: B
質問 27
RSTP provides different functions in different scenarios. Which of the following statements Is false?
- A. The role of the designated port that is enabled with root protection cannot be changed
- B. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period
- C. If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port and triggers STP calculation
- D. When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does not forward packets. If the port does not receive optimal RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state
正解: C
質問 28
Which of the following statements about the forwarding plane of a switch is false?
- A. Consists of main control boards and interface boards.
- B. Provides high-speed and non-blocking data channels.
- C. Can collect packet statistics.
- D. Can encapsulate and decapsulate packets.
正解: C
質問 29
Which of the following is the default interval at which the DIS on a broadcast IS_IS network sends CSNPs.
- A. 0
- B. 3.3
- C. 1
- D. 2
正解: D
質問 30
The Interface \P address and VRRP virtual IP address can be the same.
- A. TRUE
- B. FALSE
正解: A
質問 31
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