Download New Updated (June) Cisco 640-878 Practice Test 11-20

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QUESTION 11

Which first-hop router redundancy protocol uses the active virtual gateway to assign a virtual MAC address to the active virtual forwarders?

 

A.

HSRP

B.

VRRP

C.

GLBP

D.

FHRP

Correct Answer: C

Explanation:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html

 

 

QUESTION 12

Which two statements about the BGP weight attribute on Cisco routers are true? (Choose two.)

 

A.

It is a well-known discretionary attribute.

B.

It is only locally significant.

C.

Routes with higher weight are the preferred routes.

D.

It is used to influence the inbound traffic from the upstream AS.

E.

It is set to 100 by default.

 

Correct Answer: BC

 

 

QUESTION 13

Which BGP attribute is also used for loop prevention?

 

A.

weight

B.

local preference

C.

MED

D.

AS path

 

Correct Answer: D

Explanation:

As RFC 4271 says, “AS loop detection is done by scanning the full AS path (as specified in the AS_PATH attribute), and checking that the autonomous system number of the local system does not appear in the AS path”.

 

 

QUESTION 14

The permit 172.16.32.0 0.0.15.255 access-list entry permits exactly which IP address range?

 

A.

172.16.32.0 to 172.16.47.255

B.

172.16.32.0 to 172.16.48.255

C.

172.16.32.0 to 172.16.62.255

D.

172.16.32.0 to 172.16.63.255

E.

172.16.32.0 to 172.16.64.255

< font face="Arial">F.

172.16.32.0 to 172.16.255.255

 

Correct Answer: A

 

 

QUESTION 15

On the Cisco ME 3400 switch, spanning tree is enabled by default on which type of switch port?

 

A.

UNI

B.

ENI

C.

NNI

D.

ENI and NNI

E.

UNI, ENI, and NNI

Correct Answer: C

Explanation:

http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_25_seg_seg1/configuration/guide/swstpopt.html#wp1002608

 

 

QUESTION 16

Refer to the two show output examples below. The switch with the e8ba.70b5.7180 MAC address is the root bridge for which VLAN or VLANs?

 

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clip_image004

clip_image006

clip_image008

 

A.

VLAN 1

B.

VLAN 70

C.

VLAN 80

D.

VLANs 1, 70, and 80

E.

VLANs 1 and 70

F.

VLANs 1 and 80

G.

VLANs 70 and 80

 

Correct Answer: C

 

 

QUESTION 17

Refer to the Cisco IOS XR commands exhibit. The router administrator is trying to activate a software package on the router but is not able to do so. Which statement about this problem is true?

 

clip_image010

 

A.

The router needs to be in the global configuration mode.

B.

The router needs to be in the admin global configuration mode.

C.

The router needs to be in the admin EXEC mode.

D.

The install activate command is not the correct command to use.

E.

The administrator needs to log in as the “root” user instead of the “admin” user.

 

Correct Answer: C

Explanation:

http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r2.0/getting_started/installation/guide/gs_pack.pdf

 

clip_image012

 

 

QUESTION 18

During the BGP route selection process on Cisco routers, which BGP attribute is examined first, to determine the best path to use?

 

A.

AS path

B.

MED

C.

local preference

D.

weight

E.

origin

 

Correct Answer: D

 

 

QUESTION 19

Which type of service provider is responsible for offering backbone connectivity services to other service providers?

 

A.

CSP

B.

TSP

C.

NSP

D.

ISP

E.

ASP

 

Correct Answer: C

Explanation:

http://www.cisco.com/web/about/ac79/docs/wp/sp/Service_Providers_as_Cloud_Providers_IBSG.pdf

 

 

QUESTION 20

Cisco IP NGN service providers can offer multiple services to their customers by using which type of technology in their core networks?

 

A.

ATM

B.

SONET/SDH

C.

Frame Relay

D.

IP/MPLS

E.

PBB

 

Correct Answer: D

 

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