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Huawei H12-224 Practice Test - Questions Answers, Page 23

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Which of the following PHB types are defined in IETF DiffServ? (Choose three.)

A.
Default PH
A.
Default PH
Answers
B.
Class-Selector PHB
B.
Class-Selector PHB
Answers
C.
Fast Forwarding PHB
C.
Fast Forwarding PHB
Answers
D.
Assured Forwarding PHB
D.
Assured Forwarding PHB
Answers
Suggested answer: A, B, D

Which of the following statements are correct regarding the function of VRRP?

A.
VRRP can improve the reliability of default gateway.
A.
VRRP can improve the reliability of default gateway.
Answers
B.
VRRP increase the convergence speed of routing protocol.
B.
VRRP increase the convergence speed of routing protocol.
Answers
C.
VRRP is mainly used for traffic balance.
C.
VRRP is mainly used for traffic balance.
Answers
D.
VRRP can provide one default gateway for different network segments, it simplifies the gateway configuration for PC.
D.
VRRP can provide one default gateway for different network segments, it simplifies the gateway configuration for PC.
Answers
Suggested answer: A

Which of the following statements are correct regarding priority in VRRP?

A.
The IP address owner always uses 255 as its priority regardless its config priority.
A.
The IP address owner always uses 255 as its priority regardless its config priority.
Answers
B.
The IP address owner always uses 0 as its priority regardless its config priority.
B.
The IP address owner always uses 0 as its priority regardless its config priority.
Answers
C.
We can configure the priority as 0 to make the router never attend the Master election.
C.
We can configure the priority as 0 to make the router never attend the Master election.
Answers
D.
If a VRRP router changes from Master to Slave, it will send out a VRRP message with priority 0 in the network.
D.
If a VRRP router changes from Master to Slave, it will send out a VRRP message with priority 0 in the network.
Answers
Suggested answer: A

Which of the following statements about a backup router in a VRRP backup group are true? (Choose three.)

A.
It receives VRRP packets from the master router and determines whether the master router is functioning properly.
A.
It receives VRRP packets from the master router and determines whether the master router is functioning properly.
Answers
B.
It does not respond to the ARP requests sent from a virtual IP address.
B.
It does not respond to the ARP requests sent from a virtual IP address.
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C.
It forwards an IP packet whose destination MAC address is a virtual MAC address.
C.
It forwards an IP packet whose destination MAC address is a virtual MAC address.
Answers
D.
It discards an IP packet whose destination IP address is a virtual IP address.
D.
It discards an IP packet whose destination IP address is a virtual IP address.
Answers
Suggested answer: A, B, D

Most fields in IP headers of packets in the same data flow are identical. You can compress these fields to improve the link transmission efficiency.

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: A

When a local BFD session in the Init state receives packets with the Stat field being Down, the local BFD session changes its status to Down.

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: A

In traffic shaping, the packet whose transmission rate exceeds the rate limit will be discarded or re-marked.

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: B

BFD packets are classified into control packets and echo packets.

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: A

Assume that the following WRED policies are used in QoS:

The length of the queue for saving DSCP packets with the priority being AF21 ranges from 35 to 40.

The length of the queue for saving DSCP packets with the priority being AF22 ranges from 30 to 40.

The length of the queue for saving DSCP packets with the priority being AF23 ranges from 25 to 40.

In the case of congestion, DSCP packets with which of the following priority value will be discarded first?

A.
AF21
A.
AF21
Answers
B.
AF22
B.
AF22
Answers
C.
AF23
C.
AF23
Answers
D.
All the same
D.
All the same
Answers
Suggested answer: C

Availability identifies the utility of a system. The availability of the system increases if the MTBF decreases or the MTTR increases.

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: B
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