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CCIE Routing and Switching Written Exam v5.1

QUESTION 891

Refer to the exhibit. Which two statements about this CoS mapping are true? (Choose two)

 

clip_image002

 

A.

It maps the second queue and first threshold to CoS 2.

B.

It maps the first queue and first threshold to CoS 2 and CoS 3.

C.

It maps CoS values to the transmit queue threshold.

D.

It maps the second threshold to CoS and CoS 3.

E.

It maps the second queue and first threshold to CoS 3.

 

Correct Answer: CD

 

 

QUESTION 892

What is used to acknowledge the receipt of LSPs on a point-to-point network in IS-IS?

 

A.

hello

B.

CSNP

C.

PSNP

D.

IIH

E.

CSH

 

Correct Answer: C

 

 

QUESTION 893

Which function does PHP perform?

 

A.

popping the top label one hop before the egress LSR

B.

popping the top label at the egress LSR

C.

popping the bottom label one hop before the egress LSR

D.

popping the bottom label at the egress LSR

E.

popping the two topmost labels one hop before the egress LSR

F.

popping the two bottommost labels one hop before the egress LSR

 

Correct Answer: A

 

 

 

QUESTION 894

Which two statements about BFD operation are true? (Choose two)

 

A.

It can detect and bypass failed peers.

B.

It supports asynchronous mode.

C.

It detects failure in the forwarding path between routers over a long duration.

D.

It supports fast peer failure detection independently of the routing protocol.

E.

It provides a high-overhead, shot-duration method of detecting path failures.

 

Correct Answer: BD

 

 

QUESTION 895

Which BGP attribute is used to influence inbound traffic?

 

A.

weight

B.

origin

C.

multi-exit discriminator

D.

local preference

 

Correct Answer: C

 

 

QUESTION 896

DRAG DROP

Drag each statement about IPv6 tunneling on the left to the matching IPv6 tunneling on the right.

 

clip_image004

 

Correct Answer:

clip_image006

 

 

QUESTION 897

Which statement about Type-4 LSA in OSPFv2 is true?

 

A.

It is present only in the backbone area.

B.

It is generated by each ABR and forwarded in non-stub areas.

C.

It is forwarded in NSSA areas.

D.

It is generated by the ASBR and forwarded throughout the whole OSPF domain.

 

Correct Answer: B

 

 

QUESTION 898

Refer to the exhibit. The OSPF adjacency
between two routers cannot be established. What is the root cause of the problem?

 

clip_image008

 

A.

Both routers are designated routers.

B.

different area ID

C.

mismatched OSPF network types

D.

authentication error

E.

area type mismatch

 

Correct Answer: E

 

 

QUESTION 899

Which two statements about OSPF route filtering are true? (Choose two.)

 

A.

It can be based on the source router ID.

B.

It can be based on the external route tag.

C.

It affects LSA flooding.

D.

It can be based on the as-path.

E.

It can be based on distance.

&n
bsp;

Correct Answer: AB

 

 

QUESTION 900

Which three statements are true about the spanning-tree loop guard feature? (Choose three.)

 

A.

Loop guard affects UplinkFast operation.

B.

Loop guard can be enabled on PortFast ports.

C.

Loop guard operation is not affected by the spanning-tree timers.

D.

Loop guard must be enabled on point-to-point link only.

E.

Loop guard cannot be enabled on a switch that also has root guard enabled.

F.

Loop guard can detect a unidirectional link.

 

Correct Answer: CDE

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