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CCIE Routing and Switching Written Exam v5.1

QUESTION 851

On a network using RIPng, the prefix field of a routing table entry has a value of 0:0:0:0:0:0:0:0. What does this value signify?

 

A.

The next hop address is unknown.

B.

The next hop address is a site-local address.

C.

The neighboring router has IPv6 ND disabled.

D.

The next hop address must be the originator of the route advertisement.

E.

The associated route follows a default route out of the network.

 

Correct Answer: E

 

 

QUESTION 852

Which AS_PATH attribute can you use to prevent loops when implementing BGP confederations?

 

A.

AS_CONFED_SET

B.

AS_SEQUENCE

C.

AS_CONFED_SEQUENCE

D.

AS_SET

 

Correct Answer: C

 

 

QUESTION 853

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

 

A.

External type 2 routes are preferred over interarea routes.

B.

Intra-area routes are preferred over interarea routes.

C.

External type 1 routes are preferred over external type 2 routes.

D.

External type 1 routes are preferred over intra-area routes.

E.

External type 2 routes are preferred over external type 1 routes.

 

Correct Answer: BC

 

 

QUESTION 854

Which two statements about the OSPF two-way neighbor state are true? (Choose two.)

 

A.

Each neighbor receives its own router ID in a hello packet from the other neighbor.

B.

Each neighbor receives a hello message from the other neighbor.

C.

It is valid only on NBMA networks.

D.

It is valid only on point-to-point networks.

E.

Each neighbor receives an acknowledgement of its own hello packet from the other neighbor.

F.

Each neighbor receives the router ID of the other neighbor in a hello packet from the other neighbor.

 

Correct Answer: AE

 

 

 

 

QUESTION 855

Which two options are differences between TACACS+ and RADIUS using AAA? (Choose two.)

 

A.

Only TACACS+ limits the protocols that are supported.

B.

Only RADIUS combines accounting and authentication.

C.

Only TACACS+ uses TCP.

D.

Only RADIUS combines authorization and accounting.

E.

Only RADIUS encrypts the password in packets from the client to the server. But leaves the body of the message unencrypted.

 

Correct Answer: CE

 

 

QUESTION 856

Which three responses can a remote RADIUS server return to a client? (Choose three.)

 

A.

Reject-Challenge

B.

Access-Reject

C.

Accept-Confirmed

D.

Access-Accept

E.

Access-Challenge

F.

Reject-Access

 

Correct Answer: BDE

 

 

QUESTION 857

Which two statements about device access control are true? (Choose two.)

 

A.

The AUX port is displayed as type tty in the output of the show line command.

B.

VTY lines are associated with physical interfaces on a network device.

C.

MPP restricts device-management access to interfaces that are configured under the control plane host configuration.

D.

The enable password command sets an MD5 one-way encrypted password.

E.

The console port supports hardware flow control

 

Correct Answer: CE

 

 

QUESTION 858

Which statement about traffic management when PIM snooping is enabled is true?

 

A.

Traffic is restricted to host ports.

B.

All multicast traffic is flooded to the designated router.

C.

Join message are flooded to all routers.

D.

Designated routers receive traffic only from groups through which a join message is received.

 

Correct Answer: D

 

 

 

 

 

QUESTION 859

Which two statements about the passive-interface command are true? (Choose two.)

 

A.

A RIP router listens to multicast updates from its neighbor but stops sending multicast updates on the passive interface.

B.

In OSPF, configuring passive-interface at the interface level suppresses hello packets for the interface and all sub interfaces.

C.

An EIGRP router can form neighbor relationship on the passive interface, but incoming and outgoing multicast updates are disabled on the interface.

D.

A RIP router disables all incoming and outgoing multicast updates in the passive interface.

E.

In EIGRP, the passive interface stops sending hello packets.

F.

In OSPF, the passive interface can receive incoming routing updates and update the device routing table.

 

Correct Answer: AE

 

 

QUESTION 860

Which component of MPLS architecture uses protocols such as the label distribution protocol and tag distribution protocol to exchange labels?

 

A.

control plane

B.

data plane

C.

forwarding plane

D.

routing plane

 

Correct Answer: A

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