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Huawei H12-891 Practice Test - Questions Answers, Page 49

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Vxlan is based on UDP encapsulation, which encapsulates Ethernet data frames on top of UDP in IP packets, so it is called MAC in UDP encapsulation

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

MPLS does not enable the secondary unsubject pop-up, the penultimate hop label can be the same as

A.
TRUE
A.
TRUE
Answers
B.
FALSE
B.
FALSE
Answers
Suggested answer: B

The message types of ISIS mainly include SNP, IIH, and LSP

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

The Serial Number field of LS is used to detect expired and duplicate LSAs. The field is a 32bt signed integer, so the small serial number is Ox8000000

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

The link quality of a company's network is poor, often failures lead to route oscillation, and even occasionally there are routing loops, in order to prevent the recurrence of these phenomena, the network administrator decided to deploy URPF in the whole network to improve the stability of the network

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

D Class IP address range 239000-239255255,What does 255 do? Radio

A.
SSM multicast address, the multicast address segment is valid for the whole network
A.
SSM multicast address, the multicast address segment is valid for the whole network
Answers
B.
Any legitimate multicast traffic and multicast application can adopt this address C. Locally managed multicast address, which is valid only locally
B.
Any legitimate multicast traffic and multicast application can adopt this address C. Locally managed multicast address, which is valid only locally
Answers
C.
Link-local multicast address, where traffic that uses that address includes network control messages and that address range is only the multicast address segment used by the E. routing protocol
C.
Link-local multicast address, where traffic that uses that address includes network control messages and that address range is only the multicast address segment used by the E. routing protocol
Answers
Suggested answer: C

What are the benefits of using WRED?( Multi-select)

A.
Provides some low latency
A.
Provides some low latency
Answers
B.
Avoid TCP global synchronization
B.
Avoid TCP global synchronization
Answers
C.
Avoid congestion completely
C.
Avoid congestion completely
Answers
D.
Provides a small bandwidth guarantee
D.
Provides a small bandwidth guarantee
Answers
E.
Can avoid UDP occupying most of the bandwidth when congested
E.
Can avoid UDP occupying most of the bandwidth when congested
Answers
Suggested answer: C

In an Hw IP multicast networkówhich of the following multicast features are associated with (*, G) table entries? ( Multiple select)

A.
Dense mode
A.
Dense mode
Answers
B.
Source tree
B.
Source tree
Answers
C.
Sparse mode
C.
Sparse mode
Answers
D.
PIM bidirectional E. Share the tree
D.
PIM bidirectional E. Share the tree
Answers
E.
Dense Tree
E.
Dense Tree
Answers
Suggested answer: C, D, E

If the receive cache of a switch's gigabit Ethernet interface is full, what protocol does the switch use to know that the remote interface delays sending data frames for a period of time?

A.
8023af
A.
8023af
Answers
B.
8021U
B.
8021U
Answers
C.
8021D
C.
8021D
Answers
D.
8023
D.
8023
Answers
E.
8023Z
E.
8023Z
Answers
Suggested answer: E

There is an existing router running OSPF HWL, HW1 interface serial0 is published in zone 1, configure commands under the OSPF process nssa default-route-advertise, based on the previous description, infers which of the following options are correct?

A.
When HW1 injects a default route into Zone 1, HW1's local route table can not contain a single default route
A.
When HW1 injects a default route into Zone 1, HW1's local route table can not contain a single default route
Answers
B.
HW1 injects a Type 7 default route into Zone 0
B.
HW1 injects a Type 7 default route into Zone 0
Answers
C.
HW1 injects a type 7 default route into zone 1
C.
HW1 injects a type 7 default route into zone 1
Answers
D.
HW1 injects a Type 3 default route into Zone 1
D.
HW1 injects a Type 3 default route into Zone 1
Answers
E.
When HW1 injects a default route into zone 1, HW1's local route table needs to answer the default route
E.
When HW1 injects a default route into zone 1, HW1's local route table needs to answer the default route
Answers
Suggested answer: C, E
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