2013 Latest 642-902 Pass4sure Free Tests 191-200

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QUESTION 191

Which two statements are true about IBGP neighbor relationships? (Choose two.)

A.       An EGP or static routing is required between IBGP neighbors.

B.       A full-mesh IBGP requires that neighbor relationships be established between all BGP enabled routers in the autonomous system.

C.       IBGP neighbors must be in different autonomous systems.

D.      The BGP split-horizon rule specifies that routes learned via EBGP are never propagated to other IBGP peers.

E.       The BGP split horizon rule specifies that routes learned via IBGP are never propagated to other IBGP peers.

 

Answer: BE

 

 

QUESTION 192

A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the router to ignore some of the routes and not consider them as candidates for the best path? (Choose three.)

 

A.       paths that are marked as synchronized in the show ip bgp output

B.       paths that are marked as not synchronized in the show ip bgp output

C.       paths for which the NEXT_HOP is accessible

D.      paths for which the NEXT_HOP is inaccessible

E.       paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

F.        paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

 

Answer: BDE

 

 

QUESTION 193

Refer to the exhibit. Autonomous systems 200 and 300 have EBGP sessions established with their directly connected routers in autonomous system 100. IGP has been configured on all routers in autonomous system 100 and they successfully exchange routing updates. Traffic originated in autonomous system 200 cannot reach the destination autonomous system 300. What configuration should be done on the routers in autonomous system 100 in order for the traffic coming from autonomous system 200 to be forwarded to autonomous system 300?

clip_image001

 

A.       IBGP session must be established between routers R1 and R3, and the synchronization must be turned on.

B.       IBGP session must be established between routers R1 and R3, and the synchronization must be turned off.

C.       IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned on.

D.       IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned off.

E.        IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned on.

F.        IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned off.

 

Answer: F

 

 

QUESTION 194

Refer to the exhibit. Which statement is true about the 6.6.6.0/24 prefix?

clip_image002

 

A.       Route 6.6.6.0/24 is learned by an IBGP peer.

B.       The command neighbor send-community is configured on BGP neighbor 10.10.23.3.

C.       The route 10.10.23.3 is not being advertised to other BGP neighbors.

D.      If another path advertises the 6.6.6.0/24 path and has the default local preference, that path is more preferred.

 

Answer: B

 

 

QUESTION 195

If a metric is not specified for routes that are redistributed into OSPF, the default metric that is assigned to the routes is 20, except for redistributed BGP routes. What is the metric that is assigned to redistributed BGP routes?

 

A.        0

B.        1

C.        10

D.        200

 

Answer: B

 

 

QUESTION 196

Which one of the following statements about BGP is FALSE?

 

A.       BGP uses TCP port 179.

B.       BGP ensures reliability of updates by using the reliable transport services of TCP.

C.       The network command with the mask option never installs a prefix into the BGP table unless there is a matching prefix exists in the IP route table.

D.      A TCP connection is required before exchanging updates.

E.       BGP uses notification and the update messages to establish and maintain the BGP neighbor relationship.

 

Answer: E

 

QUESTION 197

Which option is true regarding the synchronization rule?

 

A.       Do not use or internally advertise a route until the route is learned from a source other than BGP.

B.       Do not use or advertise a route until the route is learned from a BGP peer.

C.       Do not use or advertise routes marked PARTIAL.

D.       Wait until a CONFIRM message is received before using routes from BGP neighbors.

 

Answer: A

 

 

QUESTION 198

Study the configuration presented in the exhibit carefully. What is the objective of the route map named test?

clip_image003

 

A.  marks all prefixes received from the 10.1.1.1 neighbor with a MED of 200

B.  marks the 10.0.0.0/8 prefix received from the 10.1.1.1 neighbor with a MED of 200

C.  marks the 10.0.0.0/8 prefix advertised to the 10.1.1.1 neighbor with a MED of 200

D.  marks all prefixes advertised to the 10.1.1.1 neighbor with a MED of 200

 

Answer: C

 

 

QUESTION 199

Refer to the exhibit. Routers RTA and RTB are running BGP but the session is active. What command needs to be added to establish the BGP session?

clip_image004

A.  ip route 10.10.10.1 255.255.255.255 s0/0

    ip route 10.10.10.1 255.255.255.255 s0/1

B.  no synchronization

C.  network 10.10.10.0

D.  neighbor 10.10.10.1 next-hop-self

 

Answer: A

 

 

QUESTION 200

Refer to the exhibit.

clip_image005

Network 10.0.0.0/8 is being advertised to autonomous system 65550 via both external links. Which statement about the preferred path to the 10.0.0.0/8 network is true?

 

A.  Router R1 will be preferred because its neighbor has the higher autonomous system number. B.  Router R1 will be preferred because it has the lower neighbor IP address.

C.  Router R1 will be preferred because it has a lower local preference.

D.  Router R2 will be preferred because its neighbor has a lower autonomous system number.

E.  Router R2 will be preferred because it has the higher neighbor IP address.

F.  Router R2 will be preferred because it has a higher local preference.

 

Answer: F

 

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