Huawei H12-891 Exam Dumps

Question 6 of 32

On a medium-sized network configured with BGP, two RRs are typically deployed to improved BGP RR reliability. Typically, the cluster IDs of the two RRs are set as the same. Which of the following is the reason for that?

To prevent loops.

To prevent sub-optimal routes.

To prevent memory insufficiency caused by receiving too many routes on RRs.

To prevent memory insufficiency caused by receiving too many routes on clients.

Correct Answer: A

In a BGP network, using the same cluster ID for Route Reflectors (RRs) helps to prevent routing loops. When RRs have the same cluster ID, they recognize updates coming from other RRs within the same cluster and avoid retransmitting these updates. This mechanism helps to ensure that routing information is not circulated in loops, which would lead to routing inefficiencies and potential instability in the network. While memory insufficiency and sub-optimal routes are concerns with BGP, the primary reason for using the same cluster ID in multiple RRs is to prevent routing loops.

Question 7 of 32

Which of the following BGP route attributes cannot be used to control BGP route selection?

Community

AS_Path

MED

Originator ID

Correct Answer: D

The Originator ID is not used to control BGP route selection. The Originator ID is a BGP attribute that is used to prevent routing information loops within a single BGP Autonomous System (AS) when Route Reflectors (RRs) are deployed. It helps avoid the reflection of routes back to the originator router. However, it is not involved in the process of BGP route selection or influencing the best path selection process.

Question 8 of 32

On the network shown, an engineer uses two routers to test IPv6 services by running BGP4+ to simulate the communication between the enterprise headquarters and a branch. The engineer checks an Update message sent by R1. Which of the following statements about the message information is correct?

The route described in the message may be imported using the import command.

The message describes a withdrawn IPv6 route.

The next-hop address of the route described in the message is 2001:db8:2345:l::l.

The route address prefix (including the prefix length) described in the message is 2001:db8:2345:1::1/128.

Correct Answer: D

The correct answer is that the route address prefix (including the prefix length) described in the message is 2001:db8:2345:1::1/128. This information is directly indicated in the UPDATE message under the 'Network layer reachability information' field, where it states '2001:db8:2345:1::1/128,' describing the route address prefix accurately paired with the correct prefix length of 128.

Question 9 of 32

What is the largest number of CPEs that a site can support in the Huawei SD-WAN Solution?

Correct Answer: D

The largest number of CPEs that a site can support in the Huawei SD-WAN Solution is 4. This is based on the configuration capabilities of the Huawei SD-WAN, which allows a site to be equipped with multiple CPEs for redundancy and load balancing purposes.

Question 10 of 32

Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. To facilitate script compilation, Huawei OPS provides the Python script template. Which of the following methods of the OPSConnection class in the OPS script template are incorrect?

Correct Answer: A

In the context of the Huawei Open Programmability System (OPS) using HTTP methods to access managed objects, methods must correspond to standard HTTP operations: POST for creation, PUT for updating, GET for retrieval, and DELETE for deletion. Based on these principles, the method depicted in option A is incorrect because it does not align with the expected operations for managing network devices via the OPSConnection class. Post is used for creating objects and Put is for modifying, as opposed to what is indicated in the given method.