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Huawei H12-821_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Network Security	9%	- ACL and basic security mechanisms
Topic 2: BGP	17%	- BGP policy and attributes - BGP path selection
Topic 3: Multicast	9%	- IGMP and PIM concepts
Topic 4: Network Reliability	8%	- Redundancy and failover mechanisms
Topic 5: Network Solution	2%	- Integrated network design scenarios
Topic 6: IPv6	3%	- IPv6 addressing and routing
Topic 7: Routing and Traffic Control	10%	- Traffic engineering basics - Policy-based routing
Topic 8: Network Service and Management	2%	- Network management basics
Topic 9: OSPF	16%	- OSPF core concepts - OSPF areas and LSDB
Topic 10: Large-scale WLAN Architecture	6%	- Enterprise WLAN deployment basics
Topic 11: Switching Technologies	7%	- VLAN and STP fundamentals
Topic 12: Routing Fundamentals	3%	- Network basics and routing principles
Topic 13: IS-IS	8%	- IS-IS protocol fundamentals

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q337-Q342):

NEW QUESTION # 337
PBR is a mechanism for selecting routes based on user-defined policies. There are two types of PBR:
interface-based PBR and local PBR. Which of the following statements is false about these two types of PBR?

A. Interface-based PBR takes effect only for forwarded packets.
B. Interface-based PBR is configured on an interface and takes effect only for incoming packets on the interface.
C. Local PBR takes effect only for locally originated packets.
D. Local PBR is configured in the protocol view.

Answer: D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Overview of PBR (Policy-Based Routing):
Policy-Based Routing (PBR) allows you to override traditional routing decisions by defining user-specific policies.
* Interface-Based PBR: Applied to packets arriving at a specific interface and affects traffic being forwarded through the device.
* Local PBR: Applied to traffic generated by the local router itself (e.g., locally originated packets such as management traffic).
2. Analysis of Each Statement:
Option A: Interface-based PBR takes effect only for forwarded packets.
* Correct (True Statement).
* Interface-based PBR applies only to packets arriving at a specific interface and being forwarded through the router. It does not affect locally originated traffic.
Option B: Local PBR takes effect only for locally originated packets.
* Correct (True Statement).
* Local PBR specifically applies to traffic generated by the router itself, such as pings, SNMP requests, or routing protocol updates.
Option C: Interface-based PBR is configured on an interface and takes effect only for incoming packets on the interface.
* Correct (True Statement).
* Interface-based PBR is applied directly on the interface using commands like policy-based-route. It only affects traffic entering the specified interface.
Option D: Local PBR is configured in the protocol view.
* Incorrect (False Statement).
* Local PBR is not configured in the protocol view. It is typically configured using the command local- policy in the system view to handle traffic generated by the router.
3. Summary:
D: (Local PBR is NOT configured in the protocol view).

NEW QUESTION # 338
Which of the following statements about roaming is correct? (Multiple choice)

A. AP that realizes wireless roaming must be in the same Extended Service Set (ESS)
B. AP that realizes wireless roaming must have signal coverage overlapping areas
C. The AP that realize wireless roaming must be in the same basic service set (BSS)
D. An AP that realizes wireless roaming does not need to have a signal covering the overlapping area

Answer: A,B

NEW QUESTION # 339
Unlike STP, RSTP has only one BPDU type, its value is 2, and there is no TCN BPDU.

A. FALSE
B. TRUE

Answer: B

NEW QUESTION # 340
BGP establishes neighbor relationships through UDP interaction.

A. FALSE
B. TRUE

Answer: A

NEW QUESTION # 341
When receiving a packet, a router matches the packet againstACL rules. The ACL matching result is eitherMatchedorUnmatched. If the matching result isUnmatched, which of the following are possible causes?

A. No ACL is configured on the device.
B. The packet matches an ACL rule with the deny action.
C. All rules are traversed but no matching rule is found.
D. An ACL is configured but it does not contain any rules.

Answer: A,C,D

Explanation:
Comprehensive and Detailed In-Depth Explanation:
When a packet is checked against anAccess Control List (ACL), it is processed based on rule matches.
"Unmatched" scenariosoccur if:
A: TRUE# The packetdoes not match any ACL rule.
C: TRUE#No ACL is configured, so there are no rules to match.
D: TRUE#An empty ACL exists, meaning no rules are defined.
B is incorrectbecauseif the packet matches a deny rule, it is "matched" and explicitly dropped, not
"unmatched".
#Reference:Huawei HCIA-Datacom Study Guide, ACL Rule Matching and Processing Logic.

NEW QUESTION # 342
......

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