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Huawei H12-821_V1.0-ENU Exam is a three-hour exam consisting of 60 multiple-choice questions. H12-821_V1.0-ENU exam is computer-based, and candidates can take it at a Huawei testing center. H12-821_V1.0-ENU exam is designed to test candidates’ knowledge and skills in core datacom technologies, and it is a comprehensive exam that covers a wide range of topics. Candidates who pass the exam will earn the HCIP-Datacom-Core Technology V1.0 certification, which is a globally recognized certification that demonstrates their knowledge and skills in building and managing datacom networks. HCIP-Datacom-Core Technology V1.0 certification is highly valued in the IT industry and can help candidates advance their careers and open up new opportunities.
NEW QUESTION # 67
Regarding BGP reliable routing updates, which of the following description of is ture?
- A. BGP does not need to periodically advertise routing information
- B. BGP sends complete routing table information every time a route is updated
- C. BGP works on top of UDP, and the transport layer protocol is 179
- D. BGP uses multicast updates
Answer: A
NEW QUESTION # 68
Which is not included in the three elements of the server map table of the USG series firewalls?
- A. Source IP
- B. Destination IP
- C. Agreement number
- D. Destination port number
Answer: A
NEW QUESTION # 69
Add the interface GE1/0/1 in the trusts security zone on the Huawei firewall. At this time, the GE1/0/1 interface belongs to the () (all lowercase) security zone
Answer:
Explanation:
trust
NEW QUESTION # 70
Four routers are running IS-S and the adjacency relation has been established, and the level of area number and router are marked as shown, which of the following statements are true?
- A. Both R2 and R3 will have the Level-1's LSP of ATT set
- B. R1 does not have the LSP generated by R4, so R1 can only communicate with R4 through the default route
- C. Both R2 and R3 will have the Level-1's LSP of ATT set
- D. R2 and R3 learn default routes from each other, and there is a routing loop in this network
Answer: A
NEW QUESTION # 71
Which of the following descriptions about DIS in IS-IS is wrong?
- A. The DIS with the highest priority value is selected as the DIS
- B. In the IS-IS broadcast network, routers with a priority of 0 also participate in the election of DIS
- C. The time interval for DIS to send Hello PDU is 10 seconds
- D. In the IS-IS broadcast network, the election of DIS is preemptive mode
Answer: C
NEW QUESTION # 72
Which description is correct about the prefix list? (Multiple choice)
- A. The prefix list can be used for packet filtering
- B. The prefix list cannot be used for packet filtering
- C. The prefix list is used to filter IP prefixes and cannot match the prefix number and prefix length at the same time
- D. The prefix list is used to filter IP prefixes, which can match the prefix number and prefix length at the same time
Answer: B,D
NEW QUESTION # 73
The RSTP protocol defines different port states, including Discarding and Learning. Which descriptions of these two port states are correct? (Multiple choice)
- A. Ports in the Discarding state and the earning state do not learn the MAC address table
- B. The port in the Discarding state does not learn the MAC address table
- C. Ports in the Learning state do not learn the MAC address table
- D. Ports in these two states do not forward data frames
Answer: B,D
NEW QUESTION # 74
The following is about the dual-link hot standby configuration. When configuring the priority of the AC, the greater the priority value, the higher the actual priority of the AC
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 75
The comparison items of the master switch election in the stack include? (Multiple choice)
- A. Stack ID
- B. MAC address
- C. Stack priority
- D. Running status
Answer: B,C,D
NEW QUESTION # 76
What is the IP protocol number of the VRRP message?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 77
Which type of TLV does IS-IS use to describe IPInterface Adiress?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 78
As shown in the figure, the four routers in the same LAN run IS-IS,
and R1 is DIS. Then R2, R3 R4 respectively establish adjacency relationship with R1, and R2, R3, R4 do not establish adjacency relationship.
- A. True
- B. False
Answer: B
NEW QUESTION # 79
The following information is output to a route, which of the following description about the information is correct?
- A. The router has an IBGP neighbor relationship with neighbor 2.2.2.2
- B. The AS number where the router is located is 100
- C. The Router ID of the router is 1.1.1.1
- D. The router negotiates with its neighbors and uses BGP version 3
Answer: B
NEW QUESTION # 80
As shown in the figure below, the firewall received the message from PC1 to PC2, which of the following statement is true?
- A. The message will match the security policy rule 1
- B. The message cannot match the security policies rule1 and rule2, it will match the default policy of the firewall, and the firewall will forward the message
- C. The default security policy of the firewall is to match all, and the action is to deny
- D. The message will match the new security strategy rule2, and the firewall will forward the message
Answer: D
NEW QUESTION # 81
Which of the following description about 0SPF DR is incorrect?
- A. If the current DR fails, the current BDR will automatically become the new DR, and the BDR will be re-elected in the network
- B. When a new router with greater DR Priority joins in the OSPF network, the new router will preempt the original DR
- C. When the DR Priority is the same, the one with the higher Router ID will be elected as the DR first
- D. If the value of DR Priority is large, the priority will be elected as DR
Answer: B
NEW QUESTION # 82
The ABR in the OSPF Stub area does not flood the fifth type LSA and the fourth type LSA in the Stub area, and draws a default LSA to the Stub area to guide how the data packet reaches the destination outside the AS.
- A. True
- B. False
Answer: A
NEW QUESTION # 83
Which of the following descriptions about configuring roaming groups is wrong?
- A. After the AC is enabled with the Master Controller function, it joins the roaming group by default and can manage other ACs
- B. Member ACs need to designate an AC as their own Master Controller
- C. Master Controller is a logical role that can be assumed by any common entity AC
- D. The Master Controller manages each AC through the CAPWAP tunnel
Answer: A
NEW QUESTION # 84
Which of the following BGP path attributes are optional transition attributes? (Multiple choice)
- A. Aggregator
- B. MED
- C. Community
- D. Cluster-List
Answer: A,C
NEW QUESTION # 85
As shown in the figure, the stateful inspection firewall will forward the message because the message conforms to the firewall session state.
- A. True
- B. False
Answer: B
NEW QUESTION # 86
In the switching network shown in the figure, all switches run the STP protocol. When the topology is stable, modifying the sending cycle of the configuration BPDU on which of the following switches can affect the sending cycle of the STD configuration BPDU?
- A. SWA
- B. SWD
- C. STC
- D. SWB
Answer: A
NEW QUESTION # 87
All routers in a certain network run IS-S and are in Area 49.0001. The LSDB of R1 is shown in the figure, and the Level of the four routers is judged based on this.
Answer:
Explanation:
NEW QUESTION # 88
Which statement about the VRRP timer is wrong? (Multiple choice)
- A. By default, the time period for VRRP notification messages is 2 seconds
- B. By default, the VRRP preemption delay is 1 second
- C. MASTER_DOWN =(3* ADVER_INTERVAL)+ Skew_time
- D. Skew_Time=(255-Priority)/255
Answer: A,B,D
NEW QUESTION # 89
What are the main components of the SNAP address used by the IS-IS protocol? (Multiple choice)
- A. SEL
- B. SEL
- C. SYSTEM ID
- D. DSCP
Answer: A,B,C
NEW QUESTION # 90
OSPF supports multiple processes. Multiple different OSPF processes can run on the same router. They do not affect each other and are independent of each other. The routing interaction between different OSPF processes is equivalent to the routing interaction between different routing protocols.
- A. True
- B. False
Answer: A
NEW QUESTION # 91
In a broadcast network, IS-IS establishes a neighbor relationship through _______ handshakes.
(Arabic numerals)
Answer:
Explanation:
3
NEW QUESTION # 92
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