更新された2022年05月31日 H12-821_V1.0試験問題集でPDF問題とテストエンジン
最新（2022)Huawei H12-821_V1.0試験問題集
質問 27
Which of the following statement regarding the display ospf peer command output is true?
- A. The DR address is 10.1.1.1
- B. Router ID indicates that the local router ID Is 10.1.1.1.
- C. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.
- D. Through negotiation during DD packet exchange, the local end becomes the slave.
正解: C
質問 28
Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?
- A. The port in discarding state does not learn MAC addresses table.
- B. The port In learning stole docs not learn MAC addresses table.
- C. The port in discarding or learning state does not learn MAC addresses
- D. The port In discarding or learning state does not forward data frames.
正解: C
質問 29
Which of the following statements regarding DR/BDR are false?
- A. DR others listen on the network address 224.0.0.6.
- B. All DR others establish neighbor relationships with DR and BDR only.
- C. In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.
- D. DR others listen on the multicast address 224.0.0.5.
正解: B
質問 30
A switch runs MSTP. The configuration is shown in the figure. What is the role of this switch in MSTI 1?
- A. Root switch
- B. Secondary root switch
- C. Uncertain
- D. Non-root switch
正解: C
質問 31
Which of the following statements regarding the firewall zone security level is false?
- A. Only the security level of the user-defined zone can be configured.
- B. The configured security level cannot be changed.
- C. Two zones cannot be configured with the same security level.
- D. The default security level of the new zone is 1.
正解: B
質問 32
When two routers exchange LSDB information using DD packets, a master/slave relationship is formed first, the router with a larger router ID is the master, and determine the MS bit.
- A. TRUE
- B. FALSE
正解: B
質問 33
To inject IGP routes into BGP routes, you can only use the network command.
- A. TRUE
- B. FALSE
正解: B
質問 34
Preferences of routing protocols determine the sequence In which a router selects a route among routes to the same destination /earned through different routing protocols.
- A. TRUE
- B. FALSE
正解: B
質問 35
Which of the following statements regarding different LSA types is false?
- A. LS Update packets contain complete LSA information.
- B. LS Request packets contain only LS Type, LS ID, and Advertising Router.
- C. LS Ack packets contain complete LSA information.
- D. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number.
正解: A
質問 36
After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?
- A. The level of an ISIS interface is changed.
- B. The cost of an IS-IS interface is changed.
- C. The IP address of an ISIS interface is changed.
- D. The interval at which an IS-IS interface sends IIH packets is changed.
正解: A
質問 37
Which of the following statements regarding an IP prefix are true?
- A. An IP prefix filter is used to filter IP address prefixes and can match an IP prefix number and a prefix length at the same time.
- B. An IP prefix filter can be used to filter data packets.
- C. An IP prefix filter is used to filter IP address prefixes and cannot match an IP prefix number and a prefix length at the same time.
- D. An IP prefix filter cannot be used to filter data packets.
正解: B
質問 38
RSTP provides different functions in different scenarios. Which of the following statements Is false?
- A. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period
- B. 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
- 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. The role of the designated port that is enabled with root protection cannot be changed
正解: C
質問 39
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. 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.
- C. Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.
- 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 40
Which of the following attribute must be carried in an Update message?
- A. AS-Path
- B. Prefval
- C. Local-pref
- D. MED
正解: C
質問 41
Which of the following statements regarding OSPF route summarization is false?
- A. Any router in OSPF can summarize routes.
- B. Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.
- C. Route summarization can reduce routing information, decrease the routing table size, and improve router performance.
- D. OSPF supports two route summarization modes: ABR summarization and ASBR summarization.
正解: C
質問 42
Which of the following statements about the forwarding plane of a switch is false?
- A. Consists of main control boards and interface boards.
- B. Can collect packet statistics.
- C. Provides high-speed and non-blocking data channels.
- D. Can encapsulate and decapsulate packets.
正解: B
質問 43
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