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Huawei H12-821_V1.0 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Multicast | 9% | - IGMP and PIM concepts |
| Topic 2: Network Service and Management | 2% | - Network management basics |
| Topic 3: Switching Technologies | 7% | - VLAN and STP fundamentals |
| Topic 4: Network Security | 9% | - ACL and basic security mechanisms |
| Topic 5: Routing and Traffic Control | 10% | - Traffic engineering basics - Policy-based routing |
| Topic 6: IPv6 | 3% | - IPv6 addressing and routing |
| Topic 7: Large-scale WLAN Architecture | 6% | - Enterprise WLAN deployment basics |
| Topic 8: OSPF | 16% | - OSPF core concepts - OSPF areas and LSDB |
| Topic 9: BGP | 17% | - BGP policy and attributes - BGP path selection |
| Topic 10: Routing Fundamentals | 3% | - Network basics and routing principles |
| Topic 11: Network Solution | 2% | - Integrated network design scenarios |
| Topic 12: Network Reliability | 8% | - Redundancy and failover mechanisms |
| Topic 13: IS-IS | 8% | - IS-IS protocol fundamentals |
Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:
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.)
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.
Which of the following is the default interval at which the DIS on a broadcast IS_IS network sends CSNPs.
- A. 40
- B. 30
- C. 3.3
- D. 10
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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. Init
- B. 2-way
- C. ExStart
- D. Exchange
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BGP is generally applied to complex networks where routes change frequently. Frequent route flapping consumes a large number of bandwidth and CPU resources, and even affects the normal operation of the network. This is an unavoidable problem that cannot be solved in BGP.
- A. FALSE
- B. TRUE
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In IPsec , an SA (Security Association) is uniquely identified by three parameters . Which of the following parameters does not belong to the 3-tuple information?
- A. Key exchange protocol
- B. Destination IP address
- C. Security protocol ID
- D. SPI
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