Free Download New Updated Cisco CCIE R&S 400-101 Real Exam Questions and Answers 31-40

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QUESTION 31

Which two statements about the function of the stub feature in EIGRP are true? (Choose two.)

 

A.

It stops the stub router from sending queries to peers.

B.

It stops the hub router from sending queries to the stub router.

C.

It stops the stub router from propagating dynamically learned EIGRP prefixes to the hub routers.

D.

It stops the hub router from propagating dynamically learned EIGRP prefixes to the stub routers.

 

Correct Answer: BC

 

 

QUESTION 32

In which type of EIGRP configuration is EIGRP IPv6 VRF-Lite available?

 

A.

stub

B.

named mode

C.

classic mode

D.

passive

 

Correct Answer: B

 

 

QUESTION 33

Two routers are trying to establish an OSPFv3 adjacency over an Ethernet link, but the adjacency is not forming. Which two options are possible reasons that prevent OSPFv3 to form between these two routers? (Choose two.)

 

A.

mismatch of subnet masks

B.

mismatch of network types

C.

mismatch of authentication types

D.

mismatch of instance IDs

E.

mismatch of area types

 

Correct Answer: DE

 

 

QUESTION 34

Like OSPFv2, OSPFv3 supports virtual links.Which two statements are true about the IPv6 address of a virtual neighbor? (Choose two.)

 

A.

It is the link-local address, and it is discovered by examining the hello packets received from the virtual neighbor.

B.

It is the link-local address, and it is discovered by examining link LSA received by the virtual neighbor.

C.

It is the global scope address, and it is discovered by examining the router LSAs received by the virtual neighbor.

D.

Only prefixes with the LA-bit not set can be used as a virtual neighbor address.

E.

It is the global scope address, and it is discovered by examining the intra-area-prefix- LSAs received by the virtual neighbor.

F.

Only prefixes with the LA-bit set can be used as a virtual neighbor address.

 

Correct Answer: EF

 

 

QUESTION 35

Which field is specific to the OPSFv3 packet header, as opposed to the OSPFv2 packet header?

 

A.

checksum

B.

router ID

C.

AuType

D.

instance ID

 

Correct Answer: D

 

 

QUESTION 36

Which two functions are performed by the DR in OSPF? (Choose two.)

 

A.

The DR originates the network LSA on behalf of the network.

B.

The DR is responsible for the flooding throughout one OSPF area.

C.

The DR forms adjacencies with all other OSPF routers on the network, in order to synchronize the LSDB across the adjacencies.

D.

The DR is responsible for originating the type 4 LSAs into one area.

 

Correct Answer: AC

 

 

QUESTION 37

Refer to the exhibit. AS #1 and AS #2 have multiple EBGP connections with each other. AS #1 wants all return traffic that is destined to the prefix 10.10.10.1/32 to enter through the router R1 from AS #2. In order to achieve this routing policy, the AS 1 advertises a lower MED from R1, compared to a higher MED from R3, to their respective BGP neighbor for the prefix 10.10.10.0/24. Will this measure guarantee that the routing policy is always in effect?

 

clip_image002

 

A.

Yes, because MED plays a deterministic role in return traffic engineering in BGP.

B.

Yes, because a lower MED forces BGP best-path route selection in AS #2 to choose R1 as the best path for 10.10.10.0/24.

C.

Yes, because a lower MED in AS #2 is the highest BGP attribute in BGP best-path route selection.

D.

No, AS #2 can choose to alter the weight attribute in R2 for BGP neighbor R1, and this weight value is cascaded across AS #2 for BGP best-path route selection.

E.

No, AS #2 can choose to alter the local preference attribute to overwrite the best-path route selection over the lower MED advertisement from AS #1. This local preference attribute is cascaded across AS #2 for the BGP best-path route selection.

 

Correct Answer: E

 

 

QUESTION 38

Refer to the exhibit. What does “(received-only)” mean?

 

clip_image003

 

A.

The prefix 10.1.1.1 can not be advertised to any eBGP neighbor.

B.

The prefix 10.1.1.1 can not be advertised to any iBGP neighbor.

C.

BGP soft reconfiguration outbound is applied.

D.

BGP soft reconfiguration inbound is applied.

 

Correct Answer: D

 

 

QUESTION 39

Which regular expression will only allow prefixes that originated from AS 65000 and that are learned through AS 65001?

 

A.

^65000_65001$

B.

65000_65001$

C.

^65000_65001

D.

^65001_65000$

 

Correct Answer: D

 

 

QUESTION 40

Which statement describes the BGP add-path feature?

 

A.

It allows for installing multiple IBGP and EBGP routes in the routing table.

B.

It allows a network engineer to override the selected BGP path with an additional path created in the config.

C.

It allows BGP to provide backup paths to the routing table for quicker convergence.

D.

It allows multiple paths for the same prefix to be advertised.

 

Correct Answer: D

 

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