HCIP-Datacom-Core Technology V1.0 - H12-821

Question 1

On an RSTP network , port roles are optimized to overcome the disadvantages of STP . Which of the following port roles are supported in RSTP ?

A. Alternate port

B. Designated port

C. Backup port

D. Root port

Correct Answer: A,B,C,D

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Question 2

VRF, also called VPN instance, is a network virtualization technology that helps VPN technology to isolate users. In normal cases, multiple VPN instances can be created on a physical device, and each VPN instance has independent entries. Which of the following resources can be independently owned by a VPN instance?

A. MAC address table

B. Interface

C. Routing protocol process

D. Routing table

Correct Answer: B,C,D

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Question 3

Which of the following statements regarding the stateful inspection firewall is true?

A. Because UDP is a connectionless protocol, so the stateful inspection firewall cannot match UDP packets with the status table.

B. The stateful inspection firewall only needs to match the first data packet against a rule, and the subsequent packets of the connection are matched directly in the state table.

C. The stateful inspection firewall needs to match the rules for each incoming packet.

D. When the stateful inspection firewall checks packets, packets of one same connection are not correlated.

Correct Answer: B

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Question 4

After a BGP peer relationship is established between two ends, changing the router ID of one end resets the BGP peer relationship.

A. TRUE

B. FALSE

Correct Answer: A

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Question 5

In which of the following scenarios can a neighbor relationship not be established between two directly connected Huawei routers after IS-IS is configured?

A. The two routers are Level-2 routers with the same area address, and the interfaces connecting them are on the same network segment.

B. The two routers are Level-2 routers and have different area addresses.

C. One router is a Level-1 router, and the other router is a Level-2 router.

D. The two routers are Level-1 routers and have different area addresses.

Correct Answer: D

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Question 6

Which of the following statement regarding the display ospf peer command output is true?

A. Through negotiation during DD packet exchange, the local end becomes the slave.

B. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.

C. The DR address is 10.1.1.1

D. Router ID indicates that the local router ID Is 10.1.1.1.

Correct Answer: A

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Question 7

R1, R2, R3, and R4 run IS-IS, and the DIS priorities of their interfaces are shown in the following figure. If all these devices are started simultaneously, will be elected as the DIS. (Enter the device name, for ex ample, R1.)

Correct Answer:

R4
* DIS Election in IS-IS :
* In IS-IS, the Designated Intermediate System (DIS) is elected on broadcast networks to reduce the number of LSAs exchanged and maintain the LSDB.
* The DIS is elected based on priority :
* The router with the highest priority is elected as the DIS.
* If priorities are equal, the System ID is used as a tie-breaker, and the router with the highest System ID becomes the DIS.
* HCIP-Datacom-Core Technology Training Material (IS-IS DIS Election Mechanism) .
Given DIS Priorities :
R1: Priority = 10
R2: Priority = 20
R3: Priority = 30
R4: Priority = 40
R4 has the highest DIS priority of 40 , which makes it the clear choice for DIS election.
Scenario Details :
Since all devices are started simultaneously, the DIS election process will follow the priorities without requiring a tie-breaker (System ID).
Conclusion :
The device with the highest DIS priority is R4 , and it will be elected as the DIS.

Question 8

An IP prefix list is a common matching tool used in routing policies. Which of the following cannot be configured as matching conditions in an IP prefix list on a Huawei router?

A. Port number

B. Action

C. Mask

D. Index

Correct Answer: A

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Question 9

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

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

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

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

Correct Answer: B,C

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Question 10

As shown in the figure, VRRP is associated with a BFD session. When a backup device detects a fault through BFD, the backup device immediately assumes the master role after the Master_Down_Timer timer expires.

A. TRUE

B. FALSE

Correct Answer: B

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Question 11

See the command output of a router below. Which of the following statements is true?
< R2 > display ospf interface GigabitEthernet 0/0/0 verbose
OSPF Process 1 with Router ID 10.0.2.2
Interface: 10.0.12.2 (GigabitEthernet 0/0/0)
Cost: 1 State: BDR Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.0.12.1
Backup Designated Router: 10.0.12.2
Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1

A. The interface IP address is 10.1.12.1.

B. The interface cost is 1500.

C. The router ID is 10.0.12.2.

D. This router is a BDR.

Correct Answer: D

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Question 12

An ACL can be used to match routes or data, but cannot be used to match both the IP address prefix length and mask length.

A. TRUE

B. FALSE

Correct Answer: B

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Question 13

When an SSH client accesses an SSH server for the first time and the SSH server ' s public key is not configured on the SSH client, you can enable first-time authentication on the SSH client. This allows the SSH client to access the SSH server and saves the SSH server ' s public key on the SSH client. In this way, the next time the SSH client accesses the SSH server, the SSH client can use the saved public key to authenticate the SSH server.

A. TRUE

B. FALSE

Correct Answer: A

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Huawei HCIP-Datacom-Core Technology V1.0 - H12-821_V1.0 Exam Practice Test

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