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Huawei H12-821_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Network Security	8%	- AAA authentication - ACL and packet filtering - Attack defense and security policy
Topic 2: OSPF Fundamentals	16%	- OSPF special applications and troubleshooting - OSPF principles and operation mechanisms - OSPF configuration and optimization
Topic 3: Multicast Technologies	9%	- PIM protocol - IGMP protocol - Multicast basic concepts
Topic 4: Network Reliability	7%	- BFD technology - VRRP protocol - Device redundancy and link backup
Topic 5: Ethernet Switching Technologies	7%	- Link aggregation and stack technology - Spanning Tree Protocol - VLAN principles and configuration
Topic 6: IS-IS Fundamentals	8%	- IS-IS protocol principles - IS-IS configuration and deployment
Topic 7: Network Solutions and Design	5%	- Enterprise network design principles - Typical network architecture and solution
Topic 8: WLAN Basics	2%	- WLAN deployment and optimization - WLAN technology principles
Topic 9: IPv6 Technologies	3%	- IPv6 address structure and configuration - IPv6 routing protocols
Topic 10: Network Service and Management	5%	- Network management and monitoring - DHCP and DNS services
Topic 11: Routing Basics	3%	- Routing table composition and selection rules - Routing concepts and classification
Topic 12: Routing and Traffic Control	10%	- Route import and redistribution - Policy-based routing - Routing policy and filtering
Topic 13: BGP Fundamentals	17%	- BGP configuration and policy application - BGP route attributes and selection - BGP characteristics and working principles

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q38-Q43):

NEW QUESTION # 38
Which of the following descriptions of the different classifications of PBR is correct?

A. Interface PBR is called under the interface and takes effect on the outbound packets of the interface.
B. Interface PBR can modify the IP-Precedence of IP packets
C. Local PBR is invalid for originating packets and only works for forwarded packets.
D. PBR can be divided into interface PBR, local PBR and routing PBR.

Answer: A

NEW QUESTION # 39
Which of the following statements about the BFD detection mode is correct? (Multiple choice)

A. Asynchronous mode is a commonly used BFD detection mode
B. In query mode, once the BFD session is established, the system will no longer send BFD control packets periodically
C. In asynchronous mode, the systems will send BFD control packets according to the negotiated period.
If a system does not receive the BFD control packet from the peer within the detection time, it will declare the status of the BFD session as Down.
D. Asynchronous detection mode does not support echo function

Answer: A,B,C,D

NEW QUESTION # 40
In the multicast service model, in order to improve security, ASM can configure filtering policies for group sources on the router to allow or prohibit packets from certain multicast sources from passing through.

A. FALSE
B. TRUE

Answer: B

NEW QUESTION # 41
IP multicast effectively conserves network bandwidth and reduces network load. Therefore, it is widely used in network services, such as IPTV, real-time data transmission, and multimedia conferencing.

A. FALSE
B. TRUE

Answer: B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Overview of IP Multicast:
* IP multicast is a method of delivering data from one source to multiple destinations simultaneously.
* Unlike unicast (one-to-one communication) or broadcast (one-to-all communication), multicast is one- to-many, allowing data to be sent only to subscribers (multicast group members).
* This significantly conserves bandwidth and reduces the load on the network because the source only sends a single stream of data, which is replicated by multicast routers as needed.
2. Use Cases for IP Multicast:
IP multicast is widely used in network services that involve real-time or large-scale data delivery, such as:
* IPTV (Internet Protocol Television): Broadcasting live TV streams.
* Real-Time Data Transmission: Delivering stock market data, sensor updates, etc.
* Multimedia Conferencing: Supporting group calls, webinars, and online meetings.
3. Why the Statement is TRUE:
* IP multicast reduces unnecessary traffic and maximizes efficiency, making it ideal for these types of network services.

NEW QUESTION # 42
After receiving the service packet, the modular switch first processes it through the uplink interface board, then processes it through the downlink interface board, and finally sends it out through the interface.

A. FALSE
B. TRUE

Answer: A

NEW QUESTION # 43
......

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