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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q640-Q645):

NEW QUESTION # 640
Huawei modular devices have multiple hardware modules that provide different functions. Match the following hardware modules with their functions.

Answer:

Explanation:

Explanation:
The hardware modules of Huawei modular devices and their functions are:
* Main Processing Unit (MPU): Provides control and management planes for the entire system, responsible for protocol processing, system security, and software upgrades.
* Switch Fabric Unit (SFU): Provides the data plane, enabling high-speed data switching between service modules.
* Line Processing Unit (LPU): Manages data forwarding, offering various interfaces (optical and electrical) for data access.

NEW QUESTION # 641
There are two ways to deploy Filter-Policy tools in BGP, one is to deploy globally under BGP, and the other is to deploy when pointing to peers (groups).

A. FALSE
B. TRUE

Answer: B

NEW QUESTION # 642
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 # 643
The BGP protocol is an inter-domain routing protocol.
Which of the following description of the protocol is correct? (Multiple choice)

A. Neighbor authentication is not supported
B. The BGP protocol uses a reliable transport protocol
C. Support rich routing strategies
D. Support automatic discovery of neighbors

Answer: B,C

NEW QUESTION # 644
On an OSPF or IS-IS network, the filter-policy import command can be run on a router to filter out the LSAs forwarded by its neighbors.

A. TRUE
B. FALSE

Answer: B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding LSA Filtering in OSPF and IS-IS:
* The filter-policy command is used in OSPF and IS-IS to control which routing information is imported into the local routing table or advertised to other neighbors.
* However, it cannot filter LSAs forwarded by neighbors. In OSPF and IS-IS, LSAs are always forwarded unchanged within the area to ensure all routers have a consistent link-state database.
* Filtering only affects the routes that are installed into the local routing table or advertised to other areas or neighbors.
2. Why the Statement is False:
* LSAs are forwarded without being filtered. This ensures link-state protocols maintain the same network topology view across the network.
* The filter-policy import command only controls routes that are installed into the local routing table, not the forwarding of LSAs.
3. Summary:
* The statement is FALSE because LSAs cannot be filtered by filter-policy import.
:
Huawei HCIA-Datacom Study Guide, Chapter "OSPF Route Filtering."
RFC 2328: OSPF Version 2, LSA Propagation Rules.

NEW QUESTION # 645
......

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