[Mar-2026] H12-821_V1.0 exam torrent Huawei study guide
Use Valid New H12-821_V1.0 Test Notes & H12-821_V1.0 Valid Exam Guide
Huawei H12-821_V1.0 certification exam is intended for professionals who have a good understanding of data communication technologies and experience in network design and implementation. HCIP-Datacom-Core Technology V1.0 certification exam covers a wide range of topics including advanced IP routing, MPLS VPN technology, and network security. H12-821_V1.0 exam is designed to test the candidate's knowledge and skills in these areas and to ensure that they have the ability to design, deploy, and maintain data communication networks with a high level of proficiency.
The HCIP-Datacom-Core Technology V1.0 certification exam is an excellent way for individuals to improve their career prospects in the networking field. It validates the candidate's expertise in a wide range of networking topics, providing them with the credentials that are highly valued by employers worldwide. HCIP-Datacom-Core Technology V1.0 certification exam is guided by the latest industry best practices, and the topics covered in the exam reflect the latest advancements and trends in the networking field. It is an essential addition to any networking professional's resume and can help improve career prospects significantly.
Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) Certification Exam is an advanced level certification designed for professionals who want to enhance their skills and knowledge in data communication technology. HCIP-Datacom-Core Technology V1.0 certification is designed by Huawei Technologies Co. Ltd, a leading global provider of information and communications technology (ICT) infrastructure and smart devices. HCIP-Datacom-Core Technology V1.0 certification exam focuses on the core technologies used in data communication and aims to equip professionals with the skills needed to design, deploy and maintain data communication networks.
NEW QUESTION # 256
Link aggregation is a common network technology. Which of the following are advantages of link aggregation?
- A. Improved reliability
- B. Increased link bandwidth
- C. Load balancing
- D. Route backup
Answer: A,B,C
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Definition of Link Aggregation:
* Link aggregation combines multiple physical links into a single logical link to improve bandwidth and reliability.
* Advantages of Link Aggregation:
* Load Balancing (A): Traffic is distributed across all aggregated links to improve performance.
* Improved Reliability (B): If one link fails, traffic is rerouted through other links.
* Increased Link Bandwidth (C): Bandwidth is effectively the sum of all aggregated links.
* Incorrect Option:
* Route Backup (D): Route backup is a feature of routing protocols, not link aggregation.
References:
* HCIA-Datacom Study Guide, Chapter: Link Aggregation Fundamentals
* Huawei Link Aggregation Configuration
NEW QUESTION # 257
As shown in the figure, R1 and R2 form a VRRP backup group 1. By executing the vrrp vrid 1 vitual- ip () command on R1, it can become the IP address owner, making R1 the Master and R2 the Backup.
Answer:
Explanation:
192.168.1.254
NEW QUESTION # 258
See the network shown in the following figure.
R1 and R2 run IS-IS and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2. Which of the following statements are true?
- A. The routing table of R1 does not contain the route 10.0.2.3/32.
- B. The routing table of R1 contains the route 10.0.2.3/32.
- C. The routing table of R1 contains the route 10.0.2.2/32.
- D. The routing table of R1 does not contain the routes 10.0.2.2/32 and 10.0.2.3/32.
Answer: A,C
Explanation:
In the provided configuration, IS-IS is enabled on Loopback0 but not on Loopback3 of R2. As a result, R2 will advertise the route 10.0.2.2/32 (from Loopback0) to R1 through IS-IS. However, the route 10.0.2.3/32 will not be advertised because IS-IS is not enabled on that loopback interface. The import-route direct command does not override this behavior .
NEW QUESTION # 259
A VRRP virtual router can only have virtual IP addresses.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 260
In a network environment, there are both switches running RSTP and switches running SIP, then the phenomenon that will appear in this network is: (Multiple choice)
- A. If it is a Huawei switching device, the STP will switch to RSTP mode, and the switching device running RSTP can be configured to switch back to the RSTP working mode after the switching device is removed from the network.
- B. If it is a Huawei switching device, RSTP will switch to STP mode. After the STP switching device is withdrawn from the network, the RSTP -running switching device can migrate back to the RSTP working mode
- C. RSTP can interoperate with STP, but at this time RSTP advantages such as fast convergence are lost
- D. RSTP and STP are not interoperable and will perform independent operations
Answer: B,C
NEW QUESTION # 261
Which of the following statements about Layer 2 roaming and Layer 3 roaming is correct? (Multiple choice)
- A. The VLAN on the AP service set associated with the STA must be the same before and after layer-3 roaming
- B. Layer 3 roaming means that the client roams between different subnets
- C. If the VLAN IDs associated with the front and back are the same when the STA roams, it must belong to Layer 2 roaming
- D. Layer 2 roaming means that the client roams in the same subnet
Answer: B,D
NEW QUESTION # 262
When IPv4 unicast packets are transmitted over Ethernet, their destination MAC address is also a multicast MAC address. If the IP address of a multicast group is 224.0.1.1, which of the following is the corresponding multicast MAC address?
- A. 01-00-5e-01-01-01
- B. 01-00-5e-01-01-00
- C. 01-00-5e-00-01-00
- D. 01-00-5e-00-01-01
Answer: D
NEW QUESTION # 263
In BGP, when the routing policy changes, neighbors are notified through Notification messages. Only BGP devices that support route refresh capabilities will send and respond to this message.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 264
If the two interfaces of the firewall are divided into the same area, then the data packet flow between the two interfaces does not need to be processed by packet filtering and is forwarded directly.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 265
Among the following encryption algorithms, which one requires the use of two different secret keys, the public key and the private key?
- A. DES
- B. 3DES
- C. RSA
- D. AES
Answer: C
NEW QUESTION # 266
Which of the following descriptions about OSPF is wrong?
- A. When the network type is broadcast, the MTU in the received Hello message must be consistent with the configuration of the receiving port
- B. When the network type is broadcast, the Network Mask field in the received Hello message must be consistent with the network mask of the receiving port
- C. When the network type is broadcast, the Hello Interval field in the received Hello message must be consistent with the configuration of the receiving port
- D. When the network type is broadcast, the Dead Interval field in the received Hello message must be consistent with the configuration of the receiving port
Answer: A
NEW QUESTION # 267
On an office network of an enterprise, OSPF is enabled on two directly connected routers. During adjacency establishment, the state machine stays in the 2-way state. Which of the following statements are not possible causes?
- A. Area IDs are different.
- B. Router IDs conflict.
- C. The N-bit and E-bit of Hello packets are the same.
- D. Hello time values are different.
Answer: B,C
Explanation:
OSPF State Machine:
OSPF adjacency progresses through several states: Down > Init > 2-Way > ExStart > Exchange > Loading > Full.
The 2-Way state indicates that routers have exchanged Hello packets but are not forming full adjacencies.
Possible Causes for Staying in the 2-Way State:
Hello Time Values Are Different (A): Mismatched Hello/Dead intervals prevent adjacency establishment.
Area IDs Are Different (B): OSPF routers must belong to the same area to establish adjacency.
Router IDs Conflict (C): While Router ID conflicts cause other issues, they do not result in the 2-Way state.
N-bit and E-bit Are the Same (D): Matching N-bit/E-bit values are normal and do not cause problems.
NEW QUESTION # 268
As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?
- A. You can enable the edge port on SWC's GE0/0/2 connected to the terminal so that this port can quickly enter the forwarding state.
- B. After a port is Configured as an edge port, the port can quickly enter the Forwarding state.
- C. You can enable the edge port on SWD's GEO/0/2 connected to the terminal so that this port can quickly enter the Forwarding state.
- D. Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.
Answer: B
NEW QUESTION # 269
Which of the following OSPF messages carries master-slave relationship information?
- A. LSA Update message
- B. Hello message
- C. LSA Request message
- D. DD message
Answer: D
NEW QUESTION # 270
Regarding the description of Router ID in OSPF, which of the following is incorrect?
- A. If the router-id command is not configured and the Loopback interface address is not configured, select the largest one from the IP addresses of its physical interfaces as the Router ID.
- B. If the router-id command is not manually configured and a loopback interface address is configured, select the largest loopback interface address as the Router ID.
- C. After the Router ID is changed, the Router ID of each protocol will change, no additional operations are required.
- D. If the Router ID is manually configured using the router-id command, OSPF will use this Router ID first.
Answer: C
NEW QUESTION # 271
......
H12-821_V1.0 Exam questions and answers: https://www.testinsides.top/H12-821_V1.0-dumps-review.html
H12-821_V1.0 Actual Questions Answers PDF 100% Cover Real Exam Questions: https://drive.google.com/open?id=1aEYVr5TtU_26ZdSX2YCC-bEbFSCHGAQJ