[Mar 23, 2024] Fast Exam Updates H12-821_V1.0-ENU dumps with PDF Test Engine Practice
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The HCIP-Datacom-Core Technology V1.0 certification exam covers a wide range of topics related to data communication core technology, including network architecture, network protocols, network security, and network management. H12-821_V1.0-ENU exam is divided into two parts: theory and lab. The theory part of the exam tests the candidate's understanding of data communication core technology concepts and principles, while the lab part of the exam assesses the candidate's practical skills in configuring and troubleshooting data communication networks.
NEW QUESTION # 549
NAC (Network Access Control1) network access control includes three authentication methods. () authentication, MAC authentication and Porta authentication. (If English words are involved, please use uppercase)
Answer:
Explanation:
802.1X
NEW QUESTION # 550
Which of the following is correct about IP address planning? (Multiple choice)
- A. There must be a margin for address allocation at each level, so that the continuity required for address summary can be guaranteed when the network scale expands
- B. Select continuous address blocks during address planning to facilitate route summary later
- C. When planning the IP address, you can set a specific function bit to give a certain meaning to the IP address
- D. The IP address in the same network must be unique, but after the VPN is established, there will be no conflict between the overlapping IP addresses of the local and remote networks
Answer: A,B,C
NEW QUESTION # 551
When using a routing policy for route filtering, which routes the prefix of the following options in matching the following IP-Prefix will be denied out? (Multiple choice)
[HUAWEI] ip ip-prefix aa index 10 deny 0.0.0.0 24 less-equal 32
[HUAWEI] ip ip-prefix aa index 20 permit 0.0.0.0 0 less-equal 32
- A. 1.1.1.1/24
- B. 1.1.1.1/32
- C. 1.1.1.1/26
- D. 1.1.1.2/16
Answer: A,B,C
NEW QUESTION # 552
A switch runs the RSTP protocol, and its related configuration information is shown in the figure.
According to the command configuration, please point out that for Instance 1, the role of the switch is:
- A. Can't judge
- B. Non-root switch
- C. Switch
- D. Root switch
Answer: D
NEW QUESTION # 553
After the modular switch receives the business message, it is processed by the upstream interface board, then processed by the downstream interface board, and finally sent from the interface.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 554
What are the benefits of OSPF area division? (Multiple choice)
- A. LSA can also be reduced with the division of areas, reducing the consumption of router CPU
- B. Can reduce the size of LSDB and thus reduce the consumption of router memory
- C. Mass flooding of LSAs is limited to a single area
- D. Routers in an area can learn topology details outside their area
Answer: A,B,C
NEW QUESTION # 555
The correct description about the prefix list is? (Multiple choice)
- A. The prefix list cannot be used for packet filtering
- B. The prefix list can 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 the IP prefix, which can match the prefix number and prefix length at the same time
Answer: A,D
NEW QUESTION # 556
Modify which of the following parameters, IS-IS neighbor relationship needs to be re-established? (Multiple choice)
- A. Modify the level of the IS-IS interface
- B. Modify the sending interval of llH on the IS-IS interface
- C. Modify the IF address of the IS-IS interface
- D. Modify the cost value of the IS-IS interface
Answer: A,C
NEW QUESTION # 557
The output information of a router is below, which is correct about this information?
- A. The MED value of the route to the destination network 5.1.1.0/24 is 50
- B. The next hop of the route to the target network 1.1.1.0/24 is 1.1.1.1, and the route is optimal
- C. The MED value of the route to the destination network 1.1.1.0/24 is 100
- D. The next hop of the route to the target network 5.1.1.0/24 is 1.1.1.1, and the route is optimal
Answer: D
NEW QUESTION # 558
Which of the following descriptions about the limitations of traditional traffic statistics is wrong?
- A. It needs to consume the interface of the equipment. For the ports that cannot be mirrored, it is necessary to purchase supporting equipment to access, and the cost is high
- B. Based on the counting of IP packets, the statistical information is simple and cannot be counted for various information
- C. Statistics cannot be collected for flows other than ACL rules
- D. Through the SNIP protocol for traffic statistics, it is necessary to continuously query the network management through polling, wasting CPU and network resources
Answer: C
NEW QUESTION # 559
Which of the following description about the default routing of each protocol is wrong?
- A. BGP can deliver default routes
- B. OSPF cannot deliver default routes
- C. Static default route can be configured
- D. ISIS can issue default routes
Answer: B
NEW QUESTION # 560
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. TRUE
- B. FALSE
Answer: B
NEW QUESTION # 561
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. False
- B. True
Answer: B
NEW QUESTION # 562
What are the key components of building an IP wide-area bearer network solution together with Huawei NetEngine intelligent routers?
- A. iMaster NCE-Campus
- B. iMaster NCE-IP
- C. iMaster NCE-Fabric
- D. iMaster NCE-WAN
Answer: D
NEW QUESTION # 563
Which of the following statements about MSTP is correct? (Multiple choice)
- A. The BPDU format of MSTP is the same as that of RSTP
- B. More port roles than RSTP.MSTP
- C. MSTP supports compatible operation with RSTP
- D. MSTP can realize the load sharing of traffic among different LANs
Answer: B,C,D
NEW QUESTION # 564
When OSPF runs in the broadcast network, it is necessary to elect DR and BDR.
Which of the following states will carry out the election of DR and BDR?
- A. Full
- B. Exchange
- C. 2-way
- D. Init
Answer: C
NEW QUESTION # 565
Regarding the LSA header information on the AS-External-LSA of OSPF, which of the following statement is incorrect?
- A. Link State lD represents the destination network address
- B. Forwarding Address is always 0.0.0.0
- C. Advertising Router represents the Router ID of ASBR
- D. Net mask represents the net mask of the destination network segment
Answer: B
NEW QUESTION # 566
Which of the following descriptions about the IGMPv3 report (G, INCLUDE, (S1)) sent by a host is correct?
- A. Only receive data sent by source S1 to multicast group G
- B. Accept the data sent by the source S1 to the multicast group G
- C. Do not accept the data sent by source S1 to multicast group G
- D. Do not accept the data sent by the multicast group G containing the source S1 item
Answer: B
NEW QUESTION # 567
In WLAN networking, which of the following backup technologies has the lowest cost and the slowest switching speed?
- A. Dual link hot standby
- B. Dual-link cold backup
- C. VRRP dual-machine hot standby
- D. N+1 backup
Answer: D
NEW QUESTION # 568
The statement about OSPF AS-External-LSA, which is correct? (Multiple choice)
- A. Link State ID is set as the destination network segment address
- B. Use Link State ID and Advertising Router to uniquely identify an AS-External-LSA
- C. Net mask is set to all 0
- D. Advertising Router is set to the Router ID of ASBR
Answer: A,D
NEW QUESTION # 569
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. TRUE
- B. FALSE
Answer: B
NEW QUESTION # 570
The multicast destination address of VRRP packets is ().
- A. 224.0.1.20
- B. 224.0.0.18
- C. 224.0.0.20
- D. 224.0.1.18
Answer: B
NEW QUESTION # 571
The FIB table is located on the data plane of the router, and each forwarding table entry specifies information such as the outgoing interface and the next-hop IP address to reach a certain destination.
Which of the following meanings does the B field in FLAG represent?
- A. Black hole routing
- B. Static routing
- C. Available routes
- D. Gateway routing
Answer: A
NEW QUESTION # 572
What problems can ARP spoofing attacks cause? (Multiple choice)
- A. The data sent by the user is stolen by the attacker
- B. Too many ARP packets cause the CPU of the device to be overloaded
- C. The user cannot access the external network or repeatedly disconnects
- D. The ARP cache table resources of the device are exhausted
Answer: A,B,C,D
NEW QUESTION # 573
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