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Huawei H12-821_V1.0 Exam Syllabus Topics:

Section	Objectives
Ethernet Switching Technology	- Switching Fundamentals 1. VLAN 2. Link Aggregation 3. STP/RSTP/MSTP
BGP	- BGP Technologies 1. BGP Path Selection 2. BGP Route Advertisement 3. IBGP and EBGP
IPv6	- IPv6 Fundamentals 1. IPv4 to IPv6 Transition 2. IPv6 Routing 3. IPv6 Addressing
Routing Basics	- IP Routing Fundamentals 1. Route Selection 2. Static Routing 3. Routing Table Principles
WLAN	- Wireless Networking 1. Wireless Security 2. WLAN Architecture 3. WLAN Deployment
Network Security	- Security Technologies 1. AAA 2. ACL 3. Attack Prevention
Network Service and Management	- O&M Technologies 1. SNMP 2. Telemetry 3. Network Monitoring
Multicast	- IP Multicast Technologies 1. PIM 2. Multicast Forwarding 3. IGMP
OSPF	- OSPF Fundamentals 1. OSPF Area Design 2. LSA and SPF Calculation 3. OSPF Neighbor Relationship
IS-IS	- IS-IS Fundamentals 1. Level-1 and Level-2 Routing 2. IS-IS Neighbor Establishment 3. LSP and SPF Mechanism
Network Reliability	- Reliability Technologies 1. Redundancy Design 2. VRRP 3. BFD
Network Solutions	- Enterprise Network Solutions 1. Campus Network 2. WAN Solution 3. Datacom Architecture
Routing and Traffic Control	- Traffic Management 1. Traffic Optimization 2. Route Filtering 3. Policy-based Routing

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q103-Q108):

NEW QUESTION # 103
Which of the following descriptions of the different classifications of PBR is correct?

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

Answer: D

NEW QUESTION # 104
BGP neighbor is a neighbor relationship established through UDP.

A. FALSE
B. TRUE

Answer: A

NEW QUESTION # 105
In VRRP networking, devices assume the Master and Backup roles after election.
Match the two roles with their working mechanisms.(Token is reusable)

Answer:

Explanation:
A screenshot of a computer Description automatically generated

Explanation of VRRP Roles and Their Functions:
InVRRP (Virtual Router Redundancy Protocol), devices are assigned roles as eitherMasterorBackupafter an election process. Each role has specific responsibilities to ensure the availability of the virtual IP address.
Matching Roles and Mechanisms:
Master:
Periodically send VRRP Advertisement packets.
The Master device sends advertisement packets to inform Backup devices that it is active.
Respond to an ARP request destined for a virtual IP address with an ARP reply carrying the virtual MAC address.
The Master device is responsible for responding to ARP requests for the virtual IP and forwarding traffic for it.
Backup:
Transition from Master to Backup immediately if a VRRP Advertisement packet with a higher priority is received.
A Backup device becomes Master only if the current Master stops sending advertisement packets or has a lower priority.
Discard IP packets destined for the virtual IP address.
Backup devices do not process traffic for the virtual IP address unless they become the Master.

NEW QUESTION # 106
Which of the following descriptions about the difference between stacking and clustering is wrong? (Multiple choice)

A. Both stacking and clustering can combine multiple switches to logically virtualize into one switch
B. The difference between stacking and clustering is that a stack of modular switches is called a stack, and a boxed switch is called a cluster.
C. Both stacking and clustering can improve resource utilization and reduce the complexity of network planning
D. Both stacking and clustering can be combined with link aggregation technology to easily build a highly reliable, loop-free campus network

Answer: A,B

NEW QUESTION # 107
When receiving a packet, a router matches the packet against ACL rules. The ACL matching result is either Matched or Unmatched. If the matching result is Unmatched, which of the following are possible causes?

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

Answer: A,C,D

Explanation:
Comprehensive and Detailed In-Depth Explanation:
* When a packet is checked against an Access Control List (ACL), it is processed based on rule matches.
* "Unmatched" scenarios occur if:
* A. TRUE # The packet does 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 incorrect because if 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 # 108
......

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