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  • Exam Name: HCIP-Datacom-Core Technology V1.0
  • Last Update: 08-Oct-2026
  • Questions and Answers: 394
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H12-821_V1.0 Questions and Answers

Question # 1

During routine O & M, an engineer finds that the Hold Time parameters of two devices are inconsistent. In this case, which of the following situations occurs?

A.

A peer relationship can be established, and the smaller Hold Time is selected after negotiation.

B.

A peer relationship can be established, and the larger Hold Time is selected after negotiation.

C.

No peer relationship can be established.

D.

A peer relationship can be established, and the devices use their own parameter values to send messages.

Question # 2

The BFD Echo function checks the connectivity of the forwarding link by looping back packets. Which of the following statements are true about this function?

A.

If URPF is enabled on the peer end, BFD packets may be incorrectly discarded on the peer end.

B.

In the BFD Echo function, the device uses the IP address of the outbound interface as the source IP address by default.

C.

The BFD Echo function applies only to single-hop BFD sessions.

D.

When configuring a BFD session supporting the BFD echo function, you need to configure both the local and remote discriminators.

Question # 3

On an OSPF network, the inter-area routing loop prevention mechanism requires that all non-backbone areas be directly connected to the backbone area. If a non-backbone area is not connected to the backbone area, you can configure a virtual link instead. Which of the following statements are true about virtual links?

A.

Virtual links can be used in scenarios where the backbone area is divided.

B.

Virtual links are configured in the OSPF view.

C.

Virtual links comply with the rules for loop prevention between OSPF areas.

D.

Virtual links can be used to optimize OSPF paths.

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