Get 2023 Updated Free Huawei H12-821_V1.0-ENU Exam Questions and Answer
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NEW QUESTION # 339
Which of the following descriptions about the stack topology connection method is wrong?
- A. Depending on the stack connection method, the stack can form two connection topologies: link and ring
- B. When the reliability of the network requirements is high, it is recommended to use the ring connection mode
- C. When the stack member switches are far away, you can use the chain connection method
- D. When the utilization rate of the stacking link is high, it is recommended to use the chain connection method
Answer: D
NEW QUESTION # 340
Both policy routing and routing strategy can affect the forwarding process of data packets, but they affect the data packets in different ways. Policy routing is based on policy forwarding, based on the forwarding plane. The routing strategy is based on the control plane, serving routing protocols and routing tables.
- A. True
- B. False
Answer: A
NEW QUESTION # 341
By default, when the BGP neighbor's egress routing policy (route-policy) changes, manual operations are required to resend the Update message to the neighbor.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 342
OSPF supports area authentication and interface authentication. If both authentication methods are configured at the same time, interface authentication is better than area authentication.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 343
With regard to the dual-link hot standby configuration, when configuring the priority of an AC, the higher the priority value, the higher the actual priority of the AC.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 344
In the VRP system, when the command ospf cost and bandwidth-reference are configured at the same time, the cost value on the interface is subject to the configuration of bandwidth-reference.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 345
In order to avoid inter-area loops, OSPF regulations do not allow routing information to be published directly between two non-backbone areas, and only allow routing information to be published within an area or between a backbone area and a non-backbone area. Therefore, each area border router (ABR) must be connected to the backbone area.
- A. True
- B. False
Answer: A
NEW QUESTION # 346
Which of the following attributes must exist in a BGP Update packet?
- A. WITH
- B. LOCAL-PREF
- C. PrefVal
- D. AS-PATH
Answer: D
NEW QUESTION # 347
An administrator needs to create an AS_Path filter (ipas-path-filter) to allow routes starting with 65123 in AS_Path to pass. Which of the following configurations is correct?
- A. ip as-path-filter 1 permit $65123_
- B. ip as-path-filter 1 permit ^65123_
- C. ip as-path-filter 1 permit ^65123*
- D. ip as-path-filter 1 permit *65123_
- E. ip as-path-filter 1 permit $65123*
- F. ip as-path-filter 1 permit _65123^
Answer: B
NEW QUESTION # 348
Some security areas have been created by default in the fire protection block. Which of the following security areas does not exist by default in the fire protection block?
- A. DMZ
- B. Local
- C. Internet
- D. Trust
Answer: C
NEW QUESTION # 349
BGP prefers the route with the best Origin attribute value. Origin attribute values are: EGP, IGP, ().
Answer:
Explanation:
incomplete
NEW QUESTION # 350
In a certain network environment, there are both switches running RSTP and switches running SIP. What will happen to the network? (Multiple choice)
- A. If it is a Huawei switching device, STP will switch to RSTP mode, and after the switching device that can be equipped with RSTP is evacuated from the network, the switching device running STP can be migrated back to the RSTP mode
- B. RSTP can interoperate with STP, but the advantages of RSTP such as rapid convergence are lost at this time
- C. If it is a Huawei switching equipment, RSTP will switch to STP mode. After the STP switching equipment is evacuated from the network, the switching equipment running RSTP can be migrated back to the RSTP working mode
- D. RSTP and STP are not interoperable and will perform independent operations
Answer: B,C
NEW QUESTION # 351
In the OSPF routing protocol, the unit of the bandwidth-reference command is Mbps.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 352
In a stateful inspection firewall, when the stateful inspection mechanism is turned on, when the second packet (SHN+ACK) of the three-way handshake arrives at the firewall, if there is no corresponding session table on the firewall, which of the following statements is correct?
- A. If the firewall security policy allows packets to pass, create a session table
- B. By default, after the status function is turned off, and the permission policy is configured, you can pass
- C. The message must pass through the firewall and establish a session table
- D. If the firewall security policy allows packets to pass, the packets can pass through the firewall
Answer: B
NEW QUESTION # 353
What is the IP protocol number of the VRRP message?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 354
Does the BGP protocol use () messages to revoke routing entries? (All English lowercase)
Answer:
Explanation:
update
NEW QUESTION # 355
In the WLAN three-layer networking scenario, APs will go online through the following stages. Please sort them in order. (Multiple choice)
- A. AP goes online, AC delivers service configuration to AP
- B. AP discovers AC through option 43
- C. AP obtains IP address
- D. AP and AC establish a CAP7AP tunnel
Answer: A,B,C,D
NEW QUESTION # 356
Which type of TLV does IS-IS use to describe IPInterface Adiress?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 357
Which of the following descriptions about AC roaming groups is wrong? (Multiple choice)
- A. The Master Controller must be the AC in the roaming group
- B. STAs can roam only between ACs in the same roaming group
- C. The AC in the roaming group needs to deploy a Master Controller
- D. AC can act as the roaming group server of multiple roaming groups, and at the same time, it can join multiple roaming groups
Answer: B,D
NEW QUESTION # 358
There are the following states in the BGP neighbor establishment process, then the state machine sequence that a successful connection goes through is:
1). Active
2). OpenConfirm
3). Idle
4). Establish
5). OpenSent
- A. 3-1-2-5-4
- B. 3-1-5-2-4
- C. 1-3-5-2-4
- D. 3-5-1-2-4
Answer: B
NEW QUESTION # 359
IGMP3 not only supports the general group query of the IGMPv1 version and the specific group query of the IGMPv2 version, but also supports the specified source/group query of the IGMPv3 version.
- A. True
- B. False
Answer: A
NEW QUESTION # 360
As shown in the figure, please follow the DHCPv6 four-step interactive process, drag the message to the corresponding position R1, R2, R3, R4 in order to run OSPF, the area ID is as shown in the figure, then () is ABR. (please Fill in the device name, such as R1) (Multiple choice)
- A. Request
- B. Solicit
- C. Reply
- D. Advertise
Answer: A,B,C,D
NEW QUESTION # 361
Which of the following steps or actions are step-by-step in a structured network troubleshooting process? (Multiple choice)
- A. Information filtering
- B. Contingency plans
- C. Rollback preparation
- D. Temporary environment construction
Answer: B,C
NEW QUESTION # 362
Which of the following statements about the concept of multicast is wrong?
- A. The group refers to the source, the sender of information, needs to join the multicast group to provide the forwarding of group refers to group messages
- B. Multicast group, a set identified by IP multicast address
- C. Multicast router: router or layer three switch that supports layer 3 multicast function
- D. Multicast group members, multicast group members can be widely distributed anywhere in the network
Answer: A
NEW QUESTION # 363
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