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Huawei H12-821_V1.0 Exam Syllabus Topics:

Section	Objectives
Topic 1: WLAN	- Wireless Networking 1. Wireless Security 2. WLAN Deployment 3. WLAN Architecture
Topic 2: IPv6	- IPv6 Fundamentals 1. IPv6 Addressing 2. IPv4 to IPv6 Transition 3. IPv6 Routing
Topic 3: Network Solutions	- Enterprise Network Solutions 1. Campus Network 2. WAN Solution 3. Datacom Architecture
Topic 4: Network Service and Management	- O&M Technologies 1. Network Monitoring 2. Telemetry 3. SNMP
Topic 5: BGP	- BGP Technologies 1. BGP Path Selection 2. IBGP and EBGP 3. BGP Route Advertisement
Topic 6: Multicast	- IP Multicast Technologies 1. IGMP 2. PIM 3. Multicast Forwarding
Topic 7: OSPF	- OSPF Fundamentals 1. OSPF Neighbor Relationship 2. LSA and SPF Calculation 3. OSPF Area Design
Topic 8: Ethernet Switching Technology	- Switching Fundamentals 1. Link Aggregation 2. STP/RSTP/MSTP 3. VLAN
Topic 9: Network Reliability	- Reliability Technologies 1. Redundancy Design 2. VRRP 3. BFD
Topic 10: Routing and Traffic Control	- Traffic Management 1. Route Filtering 2. Policy-based Routing 3. Traffic Optimization
Topic 11: IS-IS	- IS-IS Fundamentals 1. IS-IS Neighbor Establishment 2. LSP and SPF Mechanism 3. Level-1 and Level-2 Routing
Topic 12: Network Security	- Security Technologies 1. AAA 2. Attack Prevention 3. ACL
Topic 13: Routing Basics	- IP Routing Fundamentals 1. Static Routing 2. Route Selection 3. Routing Table Principles

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q383-Q388):

NEW QUESTION # 383
The BGP neighbor relationship cannot be established.
Which of the following is not the possible reason?

A. TCP port 179 is disabled, causing neighbors to fail to establish
B. An error occurs in the Open packet during the negotiation process, resulting in the failure to establish the neighbor relationship
C. When establishing a non-directly connected EBGP neighbor relationship, because the default TTL of the EBGP update message is 2, and no manual changes are made, the neighbor relationship cannot be established
D. BGP neighbors are unreachable, resulting in failure to establish neighbors

Answer: C

NEW QUESTION # 384
An edge port is a new port role added to RSTP to overcome the disadvantages of STP. Which of the following statements is false about this port role?

A. The port can directly enter the Forwarding state from the Discarding state.
B. The port does not participate in RSTP calculation.
C. After receiving a configuration BPDU, the port is still in the Forwarding state.
D. The Up and Down states of the port do not cause network topology changes.

Answer: C

Explanation:
Edge Port Behavior
* An edge port transitions directly to the Forwarding state but reverts to participating in RSTP calculations if it receives a valid configuration BPDU. Thus, statement C is false.
HCIP-Datacom-Core Reference
* The behavior of edge ports and their transitions are discussed in the RSTP enhancement sections.

NEW QUESTION # 385
Which of the following is the configuration command for linkage between VRRP and BFD?

A. vrrp vrid 1 track bfd-session session-name 1 reduced 100
B. vrrp vrid 1 track bfd-session-name 1 reduced 100
C. track vrrp vrid 1 bfd-session session-name 1 reduced 100
D. bfd-session vrrp vrid 1 track session-name 1 reduced 100

Answer: A

NEW QUESTION # 386
When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is.

Answer:

Explanation:
Sequential
Explanation:
ACL Matching in Huawei Routers:
Access Control Lists (ACLs) are used to filter packets based on specific criteria, such as source/destination IP, ports, or protocols.
When a packet arrives, the Huawei router processes it against the configured ACL rules to decide whether to permit or deny the packet.
Reference: HCIP-Datacom-Core Technology Training Material (ACL Principles and Configuration).
Sequential Matching Order:
By default, Huawei routers match packets against ACL rules sequentially. This means:
The router checks the packet against rules in the order they are listed, starting from the top of the ACL.
The first rule that matches the packet's attributes is applied, and no further rules are checked. This is known as the first-match principle.
If no rules match, the packet is denied by default (implicit deny).
Reference: HCIP-Datacom Advanced Routing & Switching Technology (ACL Matching Mechanism).
Example of Sequential Matching:
Consider the following ACL rules:
Rule 10: Permit IP 192.168.1.0/24
Rule 20: Deny IP 192.168.1.1
If a packet with source IP 192.168.1.1 arrives:
The router matches it against Rule 10 (Permit 192.168.1.0/24) and allows the packet.
Rule 20 is not evaluated because the first match (Rule 10) already applies.
Alternative Matching Orders:
Some routers or configurations allow batch matching (evaluating all rules) for specific scenarios, but this is not the default behavior in Huawei routers.
Conclusion:
The default ACL matching order on Huawei routers is sequential, and the first matching rule determines the action applied to the packet.

NEW QUESTION # 387
Which of the following attributes may not be included in the Update message of a BGP route? (Multiple choice)

A. AS_Path
B. 0rigin
C. Local_Preference
D. MED

Answer: C,D

NEW QUESTION # 388
......

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