H12-821_V1.0 QUESTIONS ANSWERS, RELIABLE H12-821_V1.0 STUDY GUIDE

H12-821_V1.0 Questions Answers, Reliable H12-821_V1.0 Study Guide

H12-821_V1.0 Questions Answers, Reliable H12-821_V1.0 Study Guide

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Huawei H12-821_V1.0 Questions Answers & Free PDF Unparalleled HCIP-Datacom-Core Technology V1.0

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Huawei H12-821_V1.0 certification exam is an internationally recognized certification that is highly valued by employers around the world. HCIP-Datacom-Core Technology V1.0 certification validates the candidate's knowledge and skills in data communication technologies and demonstrates their commitment to professional development. Individuals who hold this certification are more likely to be considered for career advancement opportunities and higher salaries.

Huawei H12-821_V1.0 Certification Exam consists of 60 questions that are divided into multiple-choice and scenario-based questions. H12-821_V1.0 exam duration is 90 minutes, and the passing score is 600 out of 1000 points. H12-821_V1.0 exam is available in both English and Chinese languages and can be taken at any of the Huawei authorized testing centers worldwide.

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q166-Q171):

NEW QUESTION # 166
OSPF neighbors have multiple states, such as Down, Init, 2-way, Loading, or Full. In which of the following states do OSPF routers negotiate the master and slave roles?

  • A. Exchange
  • B. Init
  • C. 2-way
  • D. ExStart

Answer: D

Explanation:
Comprehensive and Detailed in-depth Step-by-Step Explanation:OSPF routers establish neighbor relationships and progress through various states during the adjacency formation process. The ExStart state is where routers negotiate the master and slave roles. This negotiation is critical because the master initiates the Data Description (DD) packet exchange process.
Here's a breakdown of the relevant OSPF states:
* ExStart State:
* This is the phase where the routers determine which one will act as the master and which will be the slave.
* The decision is based on the Router IDs of the two routers. The router with the higher Router ID becomes the master.
* Exchange State:
* After the master-slave roles are established, the routers exchange DD packets. These packets contain summaries of the LSAs in their respective LSDBs.
* 2-way State:
* This state indicates that bidirectional communication has been established between the two routers, but it occurs before master-slave negotiation.
* Init State:
* This is an early state where a router has sent a Hello packet to its neighbor but has not yet received a Hello packet in response.
Key Point:The negotiation of master and slave roles happens exclusively in the ExStart state, making D.
ExStart the correct answer.
References:
* Huawei HCIA-Datacom Study Guide, Chapter on "OSPF Neighbor States".
* RFC 2328 - OSPF Version 2 (Section 10.8).


NEW QUESTION # 167
Which of the following statements regarding the MED value in BGP are true?

  • A. The default MED value of BGP routes is 0.
  • B. By default, BGP can compare the MED values of routes from different ASs.
  • C. By default, if there is no MED value in routes, the value 0 is used. If the bestroute med-none-as- maximum command is configured, the maximum MED value 4294967295 is used.
  • D. According to BGP route selection rules, the MED value has a lower priority than AS_Path, Preferred- Value, Local-Preference, and Origin.

Answer: C,D

Explanation:
The MED (Multi-Exit Discriminator) is an optional, non-transitive attribute used to influence the exit path.
MED is considered after attributes such as Local-Preference, AS-Path, and Origin during route selection. By default, if a MED value is missing, it is treated as 0 unless the bestroute med-none-as-maximum command is configured to treat it as 4294967295 .


NEW QUESTION # 168
Drag the following VRRP states to the corresponding working mechanisms.

Answer:

Explanation:

Explanation:
Master
Backup
Master
Backup


NEW QUESTION # 169
On an STP network, only the designated port processes inferior BPDUs. On an RSTP network, a port with any role processes inferior BPDUs.

  • A. TRUE
  • B. FALSE

Answer: A

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* STP and RSTP Behavior:
* STP: Only the designated port processes inferior BPDUs. Inferior BPDUs are received from downstream switches and typically indicate topology changes.
* RSTP: All ports, regardless of role (root, designated, or alternate), process inferior BPDUs to ensure faster convergence.
* Behavior Difference:
* RSTP improves convergence by allowing any port to process inferior BPDUs, unlike STP, which restricts this function to designated ports.
References:
* HCIA-Datacom Study Guide, Chapter: STP vs RSTP
Huawei STP and RSTP Configuration Comparison


NEW QUESTION # 170
An OSPF AS-external LSA describes a route to an AS external network. When the field in the LSA is 0.0.0.0, the traffic destined for the external network is sent to the ASBR that imports this external route. (Enter the acronym in uppercase.)

Answer:

Explanation:
NSSA
Explanation:
An OSPF AS-external LSA is used to describe routes to networks that are external to the OSPF Autonomous System (AS). This external route information is typically imported into OSPF by an Autonomous System Boundary Router (ASBR).
If the Forwarding Address field in the AS-external LSA is set to 0.0.0.0, this indicates that traffic destined for the external network should be forwarded directly to the ASBR that advertised the external route.
The specific context mentioned here relates to the Not-So-Stubby Area (NSSA), a type of OSPF area designed to handle AS-external routes in a more controlled way. In NSSAs:
* Type 7 LSAs are used to describe AS-external routes.
* The ASBR within the NSSA converts the Type 7 LSA to a Type 5 LSA before advertising it to the backbone area.
Hence, the correct acronym for the described functionality is NSSA.
References:
* Huawei HCIA-Datacom Study Guide, Chapter on "OSPF Area Types".
* RFC 3101 - OSPF Not-So-Stubby Area (NSSA) Option.


NEW QUESTION # 171
......

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