Latest Apr-2022 Huawei H12-821_V1.0 Dumps Updated 62 Questions
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NEW QUESTION 30
RSTP provides different functions in different scenarios. Which of the following statements Is false?
- A. 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
- 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. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period
- D. The role of the designated port that is enabled with root protection cannot be changed
Answer: A
NEW QUESTION 31
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. FALSE
- B. TRUE
Answer: A
NEW QUESTION 32
Which of the following statements regarding OSPF route summarization is false?
- A. Route summarization can reduce routing information, decrease the routing table size, and improve router performance.
- B. OSPF supports two route summarization modes: ABR summarization and ASBR summarization.
- C. 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.
- D. Any router in OSPF can summarize routes.
Answer: A
NEW QUESTION 33
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. FALSE
- B. TRUE
Answer: A
NEW QUESTION 34
Which of the following statements is false, based on the following IGMP information on an interface of RTA?
- A. The interval for sending group-specific Query messages is 60s.
- B. The IP address of the interface is 192.168.1.1.
- C. The maximum time for response to Query messages is 10s.
- D. The IGMP version is IGMPV2.
Answer: C
NEW QUESTION 35
Drag the following VRRP states to the corresponding working mechanisms.
Answer:
Explanation:
Explanation
Master
Backup
Master
Backup
NEW QUESTION 36
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
Answer: C
NEW QUESTION 37
Which of the following configurations are not mandatory when an administrator configures VRRP?
- A. Virtual router priority
- B. Virtual IP address
- C. Preemption delay
- D. Preemption mode
Answer: B
NEW QUESTION 38
What is the correct procedure for a VLAN pool to assign terminals to VLANs.
Answer:
Explanation:
NEW QUESTION 39
Which of the following statements regarding the BGP error display of a router false?
- A. The error occurred at 12:40:39 on March 22, 2010.
- B. The neighbor address of this router is 10.1.1.5.
- C. The error may be caused by the incorrect neighbor address.
- D. Error Type indicates that the BGP error is caused by the neighbor relationship error.
Answer: D
NEW QUESTION 40
In the OSPF protocol, inter-area route calculation involves only Router LSA, Network LSA, and Summary LSA.
- A. FLASE
- B. TRUE
Answer: B
NEW QUESTION 41
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.
Answer: B
NEW QUESTION 42
Which of the following statements regarding the firewall zone security level is false?
- A. The default security level of the new zone is 1.
- B. The configured security level cannot be changed.
- C. Two zones cannot be configured with the same security level.
- D. Only the security level of the user-defined zone can be configured.
Answer: B
NEW QUESTION 43
Which of the following statements regarding different LSA types is false?
- A. LS Ack packets contain complete LSA information.
- B. LS Update packets contain complete LSA information.
- C. LS Request packets contain only LS Type, LS ID, and Advertising Router.
- D. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number.
Answer: B
NEW QUESTION 44
Which of the following statements regarding BGP route advertisement are false?
- A. All the BGP routes learned from all BGP peer will be advertised to other BGP peers.
- B. Only the optimal routes preferred by BGP can be advertised to other BGP peers.
- C. Only the routes learned from IGPs can be advertised to other BGP peers.
- D. By default, the routes learned from an IBGP peer will not be forwarded to other IBGP peers.
Answer: B
NEW QUESTION 45
Which of the following statements about WLAN roaming are true?
- A. APs for roaming do not need to have overlapping signal coverage.
- B. APs for roaming must have overlapping signal coverage.
- C. APs for roaming must be in the same extended service set (ESS).
- D. APs for roaming must be in the same basic service set (BSS).
Answer: A
NEW QUESTION 46
Four routers run ISIS and have established adjacencies. The area IDs and router levels are marked in the following figure. If route leaking is configured on R3, which of the following is the cost of the route from R4 to 10.0.2.2/32?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 47
Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?
- A. 802.11ax
- B. 802.11n
- C. 802.11ac
- D. 802.11b
Answer: C
NEW QUESTION 48
Which of the following statements regarding the LSA age field are true?
- A. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.
- B. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.
- C. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.
- D. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.
Answer: A
NEW QUESTION 49
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?
- A. 1.1.1.1/26
- B. 1.1.1.1/24
- C. 1.1.1.2/16
- D. 1.1.1.1/32
Answer: B
NEW QUESTION 50
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