[Apr-2025] Free H12-821_V1.0-ENU Exam Questions H12-821_V1.0-ENU Actual Free Exam Questions
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NEW QUESTION # 347
Which of the following types of equipment is suitable for Huawei's IP wide area bearer network solution?
- A. NetEngine 8000
- B. NetEngine AR6000
- C. AirEngine 5760-22w
- D. CE12804
Answer: A
NEW QUESTION # 348
As shown in the figure, in order to ensure the reliability of the WLAN networking, a company has enabled the dual-link hot backup function in the networking.
Which of the following descriptions about active/standby negotiation are correct? (Multiple choice)
- A. If the value and load of AC1 and Ac2 are the same, the one with the larger IP address will be given priority
- B. The AP will select AC1 as the primary AC
- C. If the priority values and load conditions of AC1 and AC2 are the same, the one with the smaller IP address will be given priority
- D. The AP will select AC2 as the primary AC
Answer: B,C
NEW QUESTION # 349
After the STA roams in the WLAN, if it wants to continue to access the home network, it can set the HAC or HAP as the home agent.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 350
VLAN Pool can support multiple business VLANs at the same time mainly through one SSID, thereby reducing the broadcast domain and reducing the waste of IP addresses.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 351
In network design, redundant network topologies can be selected to provide high reliability for customer services. Which of the following topologies can provide redundant functions? (Multiple choice)
- A. Star topology
- B. Dual star topology
- C. Ring topology
- D. Bus Topology
Answer: B,C
NEW QUESTION # 352
A socket is composed of 5-tuples, so which of the following options does not belong to the range of
5-tuples?
- A. Destination IP
- B. Source IP
- C. Source MAC
- D. Destination port
Answer: C
NEW QUESTION # 353
As shown in the figure, R1 and R2 are in a VRRP backup group, if R1 fails, which of the following actions will R2 perform?
- A. Switch to Master device after about 0.22 seconds
- B. Switch to Master device after about 3.61 seconds
- C. Do nothing and keep the original state
- D. Switch to Master device after about 0.61 seconds
Answer: B
NEW QUESTION # 354
Which of the following descriptions about IPv6 duplicate address detection is wrong?
- A. An address is called a "tentative address" before passing the duplicate address detection. At this time, the interface cannot use this experimental address for unicast communication.
- B. If two nodes configure the same address and perform duplicate address detection at the same time, when one party receives the DAD NA message sent by the other party, the receiver will not enable the address
- C. The interface needs to perform DAD before enabling any unicast IPv6 address, including the Link-Local address
- D. Before a node automatically configures an IPv6 unicast address for an interface, it must verify that the address to be used is unique within the link-local scope and has not been used by other nodes
Answer: B
NEW QUESTION # 355
Which of the following description of the information contained in the OPEN message in EGP is wrong?
- A. The OPEN message only contains the BGP message header
- B. VERSION information is included in the OPEN message
- C. The OPEN message contains the local AS number information
- D. The OPEN message contains the Hold time message
Answer: A
NEW QUESTION # 356
As shown in the figure, four routers run IS-IS, and they are all Level1-1-2 routers. Which of the following descriptions are correct? (Multiple choice)
- A. R1 and R2 can only establish a neighbor relationship of Level1-1
- B. R1 and R4 can only establish a neighbor relationship of Level1-2
- C. R3 and R4 establish the neighbor relationship of Level1-1 and Level1-2 at the same time
- D. R1 and R3 can only establish the neighbor relationship of Level1-2
Answer: B,D
NEW QUESTION # 357
There is a message in the BGP protocol that is periodically sent between BGP neighbors to maintain the neighbor relationship. This message is:
- A. Update
- B. Hello
- C. open
- D. Keepalive
Answer: D
NEW QUESTION # 358
In the USG series firewalls, what is the security level of the DMZ area?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 359
The output information of a certain router is shown in the figure <R1>display ospf peer
OSPF Process1 with Router ID 10.0.2.2
Neighbors
Area 0.0.0.0interface10.0.12.2(GigabitEthernet0/0/0)s neighbors
Router ID:10.0.1.1 Address:10.0.12.1
State: Full Mode: Nbr is Slave Priority:1
DR:10.0.12.2 BDR:10.0.12.1MTU:0
Dead timer due in 32sec
Retrans timer interval:5
Neighbor is up for 00:03:30
Authentication Sequence: [o]
Which of the following options are correct? (Multiple choice)
- A. Router ID is l0.0.1.1
- B. The router's connection address is 10.0.12.2.
- C. Router ID is 10.0.2.2.
- D. This router is the DR.
Answer: B,C,D
NEW QUESTION # 360
Which of the following descriptions of the LSA age field is correct? (Multiple choice)
- A. If the LS age of an LSA reaches LSRefreshTime (30min), the producer of this LSA needs to regenerate an instance of the LSA
- B. If the LS age of an LSA reaches LSRefreshTime (30min), any router can regenerate an instance of the LSA for this LSA
- C. The unit of LSA age is second, the LS age of LSA in LSDB increases with time
- D. The unit of LSA age is second, the LS age of LSA in LSDB decreases with time
Answer: A,C
NEW QUESTION # 361
After the IGMP proxy device receives a report message from a multicast group, if it does not find the corresponding multicast group, the IGMP proxy device will send a report message for the multicast group to the access device, and send it to the access device. Add the multicast group to the forwarding table.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 362
When two routers exchange database information through DD messages, a master-slave relationship is first formed. The one with the larger DR Priority becomes the master router, and its master-slave bit is determined to be MS.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 363
The basic header length of IPv6 messages is a fixed value.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 364
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 # 365
L2TP has many different scenarios, so which of the following is not a scenario of L2TP?
- A. NAS-Initiated
- B. Client-Client
- C. Client-Initiated
- D. Call-LNS
Answer: B
NEW QUESTION # 366
Which of the following statement about equipment for the exchange of forwarding plane is incorrect?
- A. Provide high-speed non-blocking data channels
- B. Composed of main control board and interface board
- C. Realize packet encapsulation and decapsulation
- D. Statistics of messages can be realized
Answer: B
NEW QUESTION # 367
Which description is correct about the characteristics of a high-availability network? (Multiple choice)
- A. Once a failure occurs, the business can only be restored through manual intervention
- B. Can recover quickly after failure
- C. No failure
- D. Do not fail frequently
Answer: B,D
NEW QUESTION # 368
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