Question 1

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

Options :

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.

Answer: A

Question 2

Which of the following statements is false?

Options :

A :

If the current DR fails, the current BDR automatically becomes a new DR, and a BDR will be elected again.

B : A device with a higher router priority has a higher election priority.

C :

When a router with the highest router priority joins an OSPF network, this router will become the new DR.

D :

If two devices have the same router priority, the device with a larger router ID has a higher election priority.

Answer: C

Question 3

Which of the following statements regarding multicast MAC addresses are false?

Options :

A : One multicast MAC address maps to 32 multicast IP addresses.

B : One multicast MAC address maps to only one multicast IP address.

C :

The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower 23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

D : A multicast MAC address identifies receivers of a multicast group on the data link layer.

Answer: B

Question 4

The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?

bash

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[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32

Options :

A : 10.1.1.1/32

B : 10.1.1.0/6

C : 10.1.1.0/24

D : 10.0.0.0/16

Answer: A,C,D

Question 5

When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?

Options :

A : 1.1.1.1/26

B : 1.1.1.2/16

C : 1.1.1.1/32

D : 1.1.1.1/24

Answer: B,D