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Valid H12-821_V1.0 Test Materials, Mock H12-821_V1.0 Exam

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Acquiring the Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) Certification is a significant achievement for professionals looking to advance their careers in data communication technology. HCIP-Datacom-Core Technology V1.0 certification validates the candidate's proficiency in the core technologies used in data communication and provides them with the skills and knowledge needed to succeed in their job roles. HCIP-Datacom-Core Technology V1.0 certification is recognized globally and is highly valued by organizations that require professionals with advanced data communication skills.

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q83-Q88):

NEW QUESTION # 83
On an IS-IS network, the length and components of a NET are the same as those of an NSAP. Which of the following NET fields is used to uniquely identify a host or router in an area?

A. SEL
B. Area Address
C. System ID
D. IDI

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:
* NET (Network Entity Title) is a special form of NSAP (Network Service Access Point) used in IS- IS routing.
* NET consists of three fields:
* AFI (Authority and Format Identifier) + IDI (Initial Domain Identifier) + Area Address # Identifies the area.
* System ID # Uniquely identifies a router within an area (similar to an OSPF Router ID).
* SEL (NSEL - N-selector) # Always 0 in a NET, as IS-IS operates at Layer 3.
* Since System ID uniquely identifies a host/router within an area, the correct answer is A.
# Reference: Huawei HCIA-Datacom Study Guide, IS-IS Addressing and NET Structure.

NEW QUESTION # 84
On an enterprise network, the directly connected interfaces of two OSPF routers are on different network segments and have different masks. To establish an OSPF neighbor relationship between the two interfaces, you can change their network types to which of the following?

A. Broadcast
B. Point-to-point
C. NBMA
D. P2MP

Answer: B

Explanation:
Comprehensive and Detailed in-depth Step-by-Step Explanation:
To establish an OSPF neighbor relationship, the following conditions must be met:
The routers must share a common network segment.
Their Hello and Dead intervals must match.
Their OSPF network types must be compatible.
The IP subnet masks must match.
If two OSPF routers are ondifferent network segmentsand havedifferent subnet masks, one solution is to change the OSPFnetwork typetoPoint-to-Point (P2P)on both interfaces.
Point-to-Point (P2P):
In a P2P network type, OSPF ignores the subnet mask mismatch and establishes the neighbor relationship regardless of the network mask.
This is ideal for directly connected links between two routers.
NBMA (Non-Broadcast Multi-Access):
This network type is used for networks like Frame Relay or ATM, where a single physical interface connects to multiple neighbors.
It is not applicable to solving subnet mask mismatches for a single link.
P2MP (Point-to-Multipoint):
This type treats the link as multiple P2P links. It is mainly used in hub-and-spoke topologies.
While it can be configured to solve subnet mask mismatches, it is more complex and less commonly used compared to the P2P type.
Broadcast:
This type requires all routers on the same segment to agree on subnet masks, so it cannot resolve the subnet mask mismatch issue.
Therefore, the correct answer isA. Point-to-point.
References:
Huawei HCIA-Datacom Study Guide, Chapter on "OSPF Neighbor Relationships".
RFC 2328 - OSPF Version 2, Section 10.

NEW QUESTION # 85
As shown in the figure, R1 imports the direct route 10.1.1.0/24 to OSPF. An engineer enables bidirectional route re-advertisement on R2 and R3, and configures the following commands on R3. After the network becomes stable, which of the following is thePrevalue of the route 10.1.1.0/24 in the routing table of R4?

[R3]acl 2000
[R3-acl-basic-2000] rule permit source 10.1.1.0 0
[R3-acl-basic-2000] quit
[R3]route-policy hcip permit node 10
[R3-route-policy-10] if-match acl 2000
[R3-route-policy-10] apply preference 14
[R3-route-policy-10] quit
[R3]ospf 1
[R3-ospf-1] preference ase route-policy hcip

A. 0
B. 1
C. 2
D. 3

Answer: A

Explanation:
Let's analyze the process step-by-step:
R1redistributes thedirect route 10.1.1.0/24intoOSPF.
This OSPF route reachesR2andR3.
R2 and R3 are in an environment that usesIS-IStowardsR4.
BothR2 and R3 re-advertisethis OSPF route into IS-IS toward R4 (bidirectional route redistribution).
OnR3, aroute-policy named hcipis applied to controlASE (Autonomous System External) route preference.
The ACL matches the route10.1.1.0/24.
The route-policy sets thepreferenceof this ASE route to14.
InHuawei VRP, if a route-policy applied via preference ase route-policy matches a route, itmodifies the preferencevalue of the redistributed route when it is advertised.
By default:
OSPF ASE routeshave apreference of 150.
But in this case, due to the policy applied, the preference is explicitly changed to14on R3 before re- advertising to R4.
So,R4will install the route10.1.1.0/24from R3 withpreference 14, assuming R2 doesn't provide a better preference.
Reference from Huawei HCIP-Datacom-Core Technology Study Guide:
"You can control the preference of OSPF ASE routes by using a route-policy and applying it with the command preference ase route-policy. When the policy matches, the specified preference is used instead of the default (150)." (Chapter: OSPF Advanced Features - Section: Route Control and Inter-AS Route Redistribution)

NEW QUESTION # 86
After IPsec is deployed on an enterprise network, services are interrupted. The administrator finds that no data flow triggers IKE negotiation.
Which of the following are possible causes?(Select all that apply)

A. The IPsec policy is not correctly applied to the related interface.
B. Configuration error of an interzone security policy
C. An unreachable route
D. A mismatch between the ACL and protected data flow

Answer: A,B,C,D

Explanation:
All four are valid reasons why IKE (Internet Key Exchange) negotiation might not be triggered:
A- Security policy mismatches canblock data flows, preventing IPsec from initiating.
B- If theroute to the peer is unreachable, no packets can reach the tunnel interface, and IKE will not start.
C- If the IPsec policy is notbound to the correct interface, no protection is triggered.
D- If the ACL doesnot match the actual traffic, the flow will bypass IPsec.
Reference from Huawei HCIP-Datacom-Core Technology Study Guide:
"Common causes of IKE negotiation failure include incorrect ACLs, misapplied policies, unreachable peers, and misconfigured security zones." (Chapter: VPN Technologies - Section: IPsec Troubleshooting)

NEW QUESTION # 87
As shown in the following figure, a new AP is deployed In dual link MSB networking (load balancing mode).
Which AC will the connect to?

A. None
B. AC2
C. AC1
D. Random access

Answer: B

Explanation:
In dual-link MSB networking with load balancing, the new AP will connect to the AC with the lower number of connected APs. In this case, AC2 has only 20 connected APs, while AC1 has 100. Therefore, the new AP will connect to AC2 .

NEW QUESTION # 88
......

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