Download New Latest (May) Cisco 640-878 Actual Tests 51-60

By | May 17, 2015

Ensurepass

 

 

QUESTION 51

DRAG DROP

 

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Answer:

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A.

 

B.

 

C.

 

D.

 

 

Answer:

 

 

QUESTION 52

Refer to the exhibit.

 

 

 

Free VCE & PDF File for Cisco 640-878 Real Exam

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The access list has been configured on the Gi0/0/0/0 interface in the inbound direction. Which two packets that are sourced from 172.16.1.1 TCP port 1050, if they are routed to the Gi0/0/0/0 interface, will be permitted? (Choose two)

 

A.

destination IP address: 10.10.192.201, destination TCP port: 80

B.

destination IP address: 10.10.193.255, destination TCP port: 80

C.

destination IP address: 10.10.196.1, destination TCP port: 80

D.

destination IP address: 10.10.195.254, destination TCP port: 23

E.

destination IP address: 10.10.193.145, destination TCP port: 23

F.

destination IP address: 10.10.197.32, destination TCPport: 23

 

Answer: AB

 

 

QUESTION 53

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

 

Answer: D

 

 

QUESTION 54

Which Cisco IOS access list permits HTTP traffic that is sourced from host 10.1.129.100port 3030 and that is destined to host 192.168.1.10?

 

A.

access-list 101 permit tcp any eq 3030

B.

access-list 101 permit tcp 10.1.128.0 0.0.1.255 eq 3030 192.168.1.0 0.0.0.15 eq www

C.

access-list 101 permit tcp 10.1.129.0 0.0.0.255 eq www 192.168.1.10 0.0.0.0 eq www

D.

access-list 101 permit tcp host 192.168.1.10 eq 80 10.1.0.0 0.0.255.255 eq 3030

E.

access-list 101 permit tcp 192.168.1.10 0.0.0.0 eq 80 10.1.0.0 0.0.255.255

F.

access-list 101 permit ip host 10.1.129.100 eq 3030 host 192.168.1.100 eq 80

 

Answer: B

 

 

QUESTION 55

Which procedure is used as thelast resort disaster recovery procedure to completely replace the currently installed IOS XR software on Cisco IOS XR routers?

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A.

netboot

B.

turboboot

C.

install recovery

D.

install rollback

E.

install add and install activate

 

Answer: B

Explanation: http://www.cisco.com/en/US/docs/routers/crs/software/crs_r4.0/migration/guide/tbupgapp.p df

 

 

QUESTION 56

Which statement about the benefits of MPLS PHP is true?

 

A.

PHP is implemented to increase the performance on the egress edge LSR. PHP allows the egress edge LSR to perform only one lookup to route the IP packet based on destination IP address and routing table.

B.

PHP is implemented to increase the performance on the egress edge LSR. PHP enables the egress edge LSR to perform only one lookup based on the ingress label.

C.

PHP is implemented to increase the performance on the egress edge LSR. PHP enables the egress edge LSR to perform two lookups, first lookup based on the ingress label and a second route lookup based on the destination IP address.

D.

PHP is implemented toincrease the performance on the LSR (P routers). PHP enables

 

 

the LSR (P routers) to perform only one lookup based on the ingress label.

E.

PHP is implemented to increase the performance on the LSR (P routers). PHP enables the LSR (P routers) to perform only one route lookup based on the destination IP address.

F.

PHP is implemented to increase the performance on the LSR (P routers). PHP enables the LSR (P routers) to perform two lookups, first lookup based on the ingress label and a second route lookup based on the destination IP address.

G.

PHP is implemented to increase the performance on the ingress edge LSR. PHP enables the ingress edge LSR to perform only one lookup based on the ingress label.

H.

PHP is implemented to increase the performance on the ingress edge LSR. PHP enables the ingress edge LSR to perform two lookups, first lookup based on the ingress label and a second route lookup based on the destination IP address.

 

Answer: A

Explanation: http://packet-lab.com/main/service-provider/ccip/item/89-mpls-penultimate-hop- popping.html

 

 

QUESTION 57

Which two statements about the link state routing process are true? (Choose two.)

 

A.

It uses the DUAL algorithm.

B.

It uses metrics such as AS path.

C.

All routers in the area have link state databases.

D.

The administrative distance is 1 by default.

E.

Each router in the area floods LSPs to all neighbors.

 

Answer: CE

 

 

QUESTION 58

Which two statements about carrier-grade NAT are true? (Choose two.)

 

A.

It conserves IPv4 addresses.

B.

A service provider issues private IP addresses to its customers.

C.

A service provider translates the private IP address of its customer to another private IP address.

D.

It is implemented on the CE and PE routers.

E.

It is designed to simplify IPv6 addressing.

 

Answer: AB

Explanation: http://www.cisco.com/en/US/docs/routers/crs/software/crs_r3.9.1/cg_nat/configuration/guid e/cgc391cgn.html#wp1268988

 

Carrier Grade NAT Overview

Carrier Grade Network Address Translation (CGN) is a large scale NAT that is capable of providing private IPv4 to public IPv4 translation in the order of millions of translations to support several hundred thousand subscribers and bandwidth throughput of at least 10 Gbps full-duplex.

 

CGN is a workable solution to the IPv4 address depletion problem while offering a way for service provider subscribers and content providers to implement a graceful transition to IPv6. CGN employs network address and port translation (NAPT) methods to aggregate many private IP addresses into fewer public IPv4 addresses. For example, a single public IPv4 address with a pool of 32 K port numbers supports 320 individual private IP subscri

bers assuming each subscriber requires 100ports (for example, each TCP connection needs one port number).

A CGN requires IPv6 to assist with the transition from IPv4 to IPv6.

 

 

QUESTION 59

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

 

A.

UNI

B.

ENI

C.

NNI

D.

ENI and NNI

E.

UNI, ENI, and NNI

 

Answer: C

Explanation: http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_25_seg_s eg1/configuration/guide/swstpopt.html#wp1002608

 

 

QUESTION 60

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

 

Answer: C

Explanation: http://www.cisco.com/web/about/ac79/docs/wp/sp/Service_Providers_as_Cloud_Providers _IBSG.pdf

 

 

QUESTION