CCIE Routing and Switching Written Exam v5.1 

 

QUESTION 731

In which way does the Bridge Assurance mechanism modify the default spanning-tree behavior in an effort to prevent bridging loops?

 

A.

Received BPDUs are looped back toward the sender to ensure that the link is bidirectional.

B.

If BPDUs are no longer received on a port, the switch immediately sends out a TCN BPDU.

C.

Extended topology information is encoded into all BPDUs.

D.

BPDUs are sent bidirectional on all active network ports, including blocked and alternate ports.

 

Correct Answer: D

 

 

QUESTION 732

When you enable the MPLS Multi-VRF feature, which two supported routing protocols can be used to exchange routing information between PE routers and CE routers? (Choose two.)

 

A.

BGP

B.

RIP

C.

OSPF

D.

EIGRP

E.

IS-IS

 

Correct Answer: AB

 

 

 

QUESTION 733

Refer to the exhibit. Which two actions can you take to enable CE-1 at site A to access the Internet? (Choose two.)

 

clip_image002

 

A.

Create a default route for site A on PE-1 with the next hop set to the PE-2 interface to the Internet.

B.

Originate a default route in site B with the next hop set to the PE-2 Internet interface, and import the default route into site A.

C.

Create a default route on CE-1 with the next hop set to the PE-1 upstream interface.

D.

Originate a default route in site A with the next hop set to the PE-2 interface to CE-1.

E.

Create a static default route on CE-1 with the next hop set to the PE-2 interface to the Internet.

 

Correct Answer: AB

 

 

QUESTION 734

Which statement about OSPF loop prevention is true?

 

A.

The discard route is generated automatically on the ABR to prevent routing loops.

B.

The ASBR uses type 3 LSAs from non-backbone areas to prevent control-plane routing loops.

C.

The ABR can filter type 3 LSPs to prevent routing loops.

D.

The DN bit ignores LSA types 2, 3, and 5 to prevent routing loops.

 

Correct Answer: A

 

 

QUESTION 735

Which map is locally defined?

 

A.

DSCP-to-DSCP-mutation

B.

CoS-to-DSCP

C.

IP-precedence-to-DSCP

D.

DSCP-to-CoS

 

Correct Answer: A

 

 

QUESTION 736

What is the VLAN ID range of VLANs that are eligible for pruning?

 

A.

2 through 1001

B.

1 through 1005

C.

1 through 4096

D.

2 through 1005

 

Correct Answer: A

 

 

QUESTION 737

Which two statements about IS-IS wide metrics are true? (Choose two.)

 

A.

The wide metric is a 24-bit field.

B.

The maximum link metric is 16777215.

C.

R3 and R4 periodically advertise PNSP messages to synchronize the IS-IS database.

D.

IS-IS devices that are enabled with wide metrics can become neighbors with a device that uses standard metrics.

E.

The maximum link metric is 4261412864.

F.

The maximum path metric is 16777215.

 

Correct Answer: AB

 

 

QUESTION 738

Which two statements about Metro Ethernet services are true? (Choose two.)

 

A.

EPL is a point-to-point service from one customer site to another across an MPLS backbone.

B.

EVPL is a multipoint service that emulates a LAN over an MPLS backbone.

C.

EPLAN is a multipoint service that emulates a LAN over an MPLS backbone.

D.

EVPL is a point-to-point service from one customer site to another across an MPLS backbone.

E.

ELAN is a point-to-point service from one customer site to another across an MPLS backbone.

F.

EVPL is a multipoint service with a root node that is suitable for multicast services.

 

Correct Answer: AB

 

 

QUESTION 739

RIPv2 is enabled on a router interface. The “neighbor” command is also configured with a specific IP address. Which statement describes the effect of this configuration?

 

A.

RIP stops sending multicast packets on that interface.

B.

RIP starts sending only unicast packets on that interface.

C.

RIP starts ignoring multicast packets on that interface.

D.

RIP starts sending unicast packets to the specified neighbor, in addition to multicast packets.

 

Correct Answer: D

 

 

QUESTION 740

When you implement CoPP on your network, what is its default action?

 

A.

permit all traffic

B.

rate-limit bidirectional traffic to the control plane

C.

drop management ingress traffic to the control plane

D.

monitor ingress and egress traffic to the control plane by using access groups that are applied to the interface

E.

block all traffic

 

Correct Answer: A

 

Free VCE & PDF File for Cisco 400-101 Practice Test

Instant Access to Free VCE Files: CCNA | CCNP | CCIE …
Instant Access to Free PDF Files: CCNA | CCNP | CCIE …