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Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) exam is designed to test the knowledge and skills of IT professionals in the field of data communication. H12-821_V1.0 exam covers a wide range of topics, including network architecture, data transmission, network security, and network maintenance. Passing the exam proves the candidate's expertise in designing, deploying, and managing data communication networks.

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The HCIP-Datacom-Core Technology V1.0 exam is targeted at professionals who are involved in the design, implementation, and maintenance of data communication networks. H12-821_V1.0 exam is designed to test the candidate's knowledge and proficiency in the core technologies used in data communication networks. HCIP-Datacom-Core Technology V1.0 certification is recognized globally and provides a competitive edge to professionals who are seeking to advance their careers in the field of data communication.

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q296-Q301):

NEW QUESTION # 296
As shown in the figure, VRRP is associated with a BFD session. When a backup device detects a fault through BFD, the backup device immediately assumes the master role after the Master_Down_Timer timer expires.

A. FALSE
B. TRUE

Answer: A

Explanation:
VRRP and BFD Association:
VRRP (Virtual Router Redundancy Protocol) is used to provide gateway redundancy by electing amasterandbackuprouter.
Associating VRRP with BFD (Bidirectional Forwarding Detection) allows faster detection of faults on the master device or the link between the master and the backup.
HCIP-Datacom-Core Technology Training Material (VRRP and BFD Association).
Master_Down_Timer Behavior:
Normally, when a VRRP backup device detects that the master is down (through missed VRRP advertisements), theMaster_Down_Timerdictates the failover timing.
However, when VRRP is associated with BFD:
BFD detects faults immediately (sub-second detection).
The backup device doesnot wait for the Master_Down_Timerto expire. Instead, it immediately assumes the master role upon fault detection by BFD.
Reference:HCIP-Datacom-Core Technology Training Material (VRRP Failover Mechanism).
Why the Statement is FALSE:
The statement claims that the backup device assumes the master roleafter the Master_Down_Timer expireswhen a fault is detected by BFD.
This is incorrect because BFD bypasses the need for the Master_Down_Timer to expire. The backup device transitions to the master role immediately upon BFD detecting a fault.
Conclusion:
The correct behavior of VRRP when associated with BFD isimmediate role assumption by the backup deviceupon fault detection, bypassing the Master_Down_Timer.
Therefore, the statement isFALSE.

NEW QUESTION # 297
The IGMP protocol runs between an IP host and its directly connected multicast router to maintain multicast group membership.

A. TRUE
B. FALSE

Answer: A

NEW QUESTION # 298
The Huawei Cloud Campus solution supports the Free Mobility function. Which of the following descriptions about the Free Mobility function is correct? (Multiple choice)

A. The administrator does not need to pay attention to the user's IP address when configuring the policy
B. The controller is not only the authentication center in the campus network, but also the management center of business policies
C. In the free mobility solution, the administrator does not need to repeat the configuration for each device
D. The administrator can uniformly manage the entire network policy on the controller and execute the business policy on the device

Answer: A,B,C,D

NEW QUESTION # 299
During routine maintenance, an enterprise administrator runs a command to check VRRP group information.
yaml
CopyEdit
<HUAWEI> display vrrp verbose
Vlanif100 | Virtual Router 1 State: Master
Virtual IP: 10.1.1.100
Master IP: 10.1.1.2
PriorityRun: 1020
PriorityConfig: 120
DR: None
BDR: None MTU: 0
Preempt: YES
Delay Time: 20s
Remain: --
Track: YES Priority Reduced: 20
Auth Type: MD5
BFD-session State: UP
Which of the following statements is false about the command output?

A. Authentication is enabled for the VRRP group.
B. Preemption is enabled for the VRRP group.
C. The ID of the VRRP group is 1.
D. This VRRP group is an mVRRP group.

Answer: D

Explanation:
Analysis of VRRP Configuration:
Option A (Preemption): Correct. The output explicitly states that preemption is enabled.
Option C (Authentication): Correct. Authentication is enabled using MD5.
Option D (Group ID): Correct. The VRRP group ID is explicitly stated as 1.
False Statement:
Option B (mVRRP Group): The output does not indicate this is an mVRRP (Multicast VRRP) group. This feature must be explicitly configured and is not enabled by default.

NEW QUESTION # 300
GRE is a VPN encapsulation technology that is widely used to transmit packets across heterogeneous networks.
Which of the following statements is false about GRE?

A. GRE supports multicast transmission.
B. GRE is a Layer 3 VPN encapsulation technology.
C. GRE supports encryption and authentication.
D. GRE can work with other VPN protocols to better ensure data security.

Answer: C

Explanation:
GRE Characteristics
GRE does not inherently support encryption or authentication. It is a tunneling protocol for encapsulating packets, and data security features must be implemented using other protocols such as IPsec.

NEW QUESTION # 301
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