H12-821_V1.0 Practice Exams and Training Solutions for Certifications
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Huawei H12-821_V1.0 Certification Exam covers a wide range of topics, including network architecture, routing and switching, IPv6, network security, and network management. Candidates are required to have a deep understanding of the concepts and technologies associated with these topics, as well as hands-on experience in configuring and troubleshooting complex data communication networks. H12-821_V1.0 exam is designed to test a candidate’s knowledge and skills in various scenarios, and candidates must be able to demonstrate their ability to solve problems and make decisions under pressure.
NEW QUESTION # 26
A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?
- A. The cost of S4/0/0 is 20.
- B. S4/0/0 sends IIH packets at the interval of 30s.
- C. S4/0/0 supports IPv6.
- D. The circuit level of S4/0/0 is Level-1.
Answer: B
NEW QUESTION # 27
Drag the following VRRP states to the corresponding working mechanisms.
Answer:
Explanation:
Explanation
Master
Backup
Master
Backup
NEW QUESTION # 28
To inject IGP routes into BGP routes, you can only use the network command.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 29
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: A
NEW QUESTION # 30
Which of the following statements regarding the stateful inspection firewall is true?
- A. The stateful inspection firewall only needs to match the first data packet against a rule, and the subsequent packets of the connection are matched directly in the state table.
- B. Because UDP is a connectionless protocol, so the stateful inspection firewall cannot match UDP packets with the status table.
- C. The stateful inspection firewall needs to match the rules for each incoming packet.
- D. When the stateful inspection firewall checks packets, packets of one same connection are not correlated.
Answer: A
NEW QUESTION # 31
Which of the following routing protocols support the default route through command configuration?
- A. BGP
- B. ICMP
- C. OSPF
- D. IS-IS
Answer: A
NEW QUESTION # 32
Which of the following statements regarding the LSA age field are true?
- A. 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.
- B. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.
- C. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.
- D. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.
Answer: B
NEW QUESTION # 33
IGMPV3 not only supports IGMPv1 General Query and IGMPv2 Group-Specific Query, and also IGMPv3 Source/Group-Specific Query.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 34
Which of the following statements regarding the summary automatic command and BGP route summarization is false?
- A. After this command is configured, BGP summarizes routes based on natural network segments
- B. This command is used to implement automatic summarization. Automatic summarization takes precedence over manual summarization
- C. This command enables automatic summarization for the locally imported routes
- D. After this command is configured, BGP sends only the summarized routes to peers
Answer: A
NEW QUESTION # 35
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 # 36
The traffic limiting policy feature only supports the number of connections initiated by the specified IP or the number of connections received.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 37
BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 38
An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?
- A. 60s
- B. 90s
- C. 20s
- D. 75s
Answer: C
NEW QUESTION # 39
Which of the following statements about multicast packet forwarding is true?
- A. 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.
- B. IGMP snooping cannot control the scope of multicast traffic flooding on a Layer 2 network.
- C. The source address of a multicast packet is a unicast address.
- D. In multicast transmission, the destination address of a packet can be the unicast address of a host.
Answer: A
NEW QUESTION # 40
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 # 41
Which of the following statements is false?
- A. A device with a higher router priority has a higher election priority.
- B. When a router with the highest router priority joins an OSPF network, this router will become the new DR.
- C. If the current DR fails, the current BDR automatically becomes a new DR, and a BDR will be elected again.
- D. If two devices have the same router priority, the device with a larger router ID has a higher election priority.
Answer: C
NEW QUESTION # 42
After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?
- A. The cost of an IS-IS interface is changed.
- B. The interval at which an IS-IS interface sends IIH packets is changed.
- C. The level of an ISIS interface is changed.
- D. The IP address of an ISIS interface is changed.
Answer: C
NEW QUESTION # 43
The Interface \P address and VRRP virtual IP address can be the same.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 44
The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?
- A. Is used together with the route import function to advertise some imported external routes to neighbors.
- B. Controls the advertisement of routes generated by the device.
- C. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.
- D. Filters LSPs to be advertised.
Answer: C
NEW QUESTION # 45
A monitoring plane usually comprises the monitoring units of main control boards and interface boards. This plane can monitor the system environment independently. Which of the following environment monitoring functions can be provided by the monitoring plane?
- A. System power-on and power-off control
- B. Voltage monitoring
- C. Temperature monitoring
- D. Fan control
Answer: C
NEW QUESTION # 46
OSPF supports area authentication and interface authentication. If both authentication modes are configured, Interface authentication takes preference over area authentication.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 47
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 48
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 # 49
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 # 50
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