Free 640-878 Questions for Cisco Building Cisco Service Provider Next-Generation Networks Part 2 640-878 Exam as PDF & Practice Test Engine

Exam Code/Number: 640-878
Exam Name/Title: Building Cisco Service Provider Next-Generation Networks Part 2
Certification Provider: Cisco
Corresponding Certification: CCNA SP

Exam Questions: 126
Updated On: Jul 21, 2026

Question #1

When upgrading a Cisco ASR 1001 Router, when is the request platform software package expand file bootflash:image-name command required?

A. to run the router using a consolidated package

B. to run the router using individual subpackages

C. to perform Cisco IOS ISSU on the standby route processor

D. to copy the consolidated Cisco IOS XE image to the bootflash:

Discussion 0

Correct Answer: B Vote an answer

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Question #2

Which file extension indicates a bootable installation file in Cisco IOS XR software?

A. .mini

B. .pie

C. .vm

D. .tar

E. .bin

F. .smu

Discussion 0

Correct Answer: C Vote an answer

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Question #3

Refer to the partial Cisco IOS-XR configuration. What is the purpose of the for PFX to PEER command?
!
mpls ldp
label
advertise
disable
for PFX to PEER
!<output omitted>
!

A. To perform inbound filtering for local label advertisement for one or more prefixes from one or more peers

B. To selectively disable LDP peering(s) with specific neighbors

C. To perform outbound filtering for local label advertisement for one or more prefixes to one or more peers

D. To selectively enable LDP peering(s) with specific neighbors

Discussion 0

Correct Answer: C Vote an answer

Question #4

CORRECT TEXT

Discussion 0

Correct Answer:

Here is the solution.
conf t
int loopback 0
no shut
ipv4 address 10.7.1.1 255.255.255.255
ipv6 address 2001:db8:10:7:1::1/128
int Gi0/0/0/1
no shut
ipv4 address 192.168.178.70 255.255.255.0
ipv6 address 2001:DB8:192:168:178::70/64
commit
router bgp 65001
address-family ipv4 unicast
redistribute connected
neighbor 10.8.1.1
remote-as 65001
update-source loopback 0
commit
exit
address family ipv6 unicast
redistribute connected
neighbor 2001:db8:10:8:1::1
remote-as 65001
update-source loopback 0
commit

Question #5

You want to configure HSRP between a Cisco IOS and a Cisco IOS XR router for the 192.0.2.0/24 subnet. Half of the PCs on the 192.0.2.0/24 subnet are configured to use 192.0.2.1 as the default gateway, and the other half of the PCs are configured to use 192.0.2.254 as the default gateway. The intent is to load balance the traffic across both routers.
Which two IOS and IOS XR configurations are needed? (Choose two.)

A. ! IOS-XR interface GigabitEthernet 0/0/0/0 ip address 192.0.2.1 255.255.255.0 router hsrp interface GigabitEthernet 0/0/0/0 hsrp 1 ipv4 192.0.2.1 hsrp 1 priority 99 hsrp 1 preempt hsrp 2 ipv4 192.0.2.254 hsrp 2 priority 101 hsrp 2 preempt

B. ! IOS interface GigabitEthernet 0/0 ip address 192.0.2.254 255.255.255.0 standby 1 ip 192.0.2.1 standby 1 preempt standby 2 ip 192.0.2.254 standby 2 preempt

C. ! IOS-XR interface GigabitEthernet 0/0/0/0 ip address 192.0.2.3 255.255.255.0 router hsrp interface GigabitEthernet 0/0/0/0 hsrp 1 ipv4 192.0.2.1 hsrp 1 priority 1 hsrp 1 preempt hsrp 2 ipv4 192.0.2.254 hsrp 2 priority 1 hsrp 2 preempt

D. ! IOS interface GigabitEthernet 0/0 ip address 192.0.2.2 255.255.255.0 standby 1 ip 192.0.2.1 standby 1 priority 105 standby 1 preempt standby 2 ip 192.0.2.254 standby 2 priority 95 standby 2 preempt

E. ! IOS interface GigabitEthernet 0/0 ip address 192.0.2.2 255.255.255.0 standby 1 ip 192.0.2.1 standby 1 preempt standby 1 priority 2 standby 2 ip 192.0.2.254 standby 2 preempt standby 2 priority 2

F. ! IOS-XR interface GigabitEthernet 0/0/0/0 ip address 192.0.2.3 255.255.255.0 router hsrp interface GigabitEthernet 0/0/0/0 hsrp 1 ipv4 192.0.2.1 hsrp 1 priority 95 hsrp 1 preempt hsrp 2 ipv4 192.0.2.254 hsrp 2 priority 105 hsrp 2 preempt

Discussion 0

Correct Answer: D,F Vote an answer

Question #6

You are enabling OSPF on a router and notice that all the Fast Ethernet and the Gigabit Ethernet interfaces have the same OSPF cost of 1. Which single configuration change can you make in router ospf configuration mode so that the Fast Ethernet interfaces have a higher OSPF cost than the Gigabit Ethernet interfaces?

A. Change the OSPF auto-cost reference bandwidth.

B. Change the OSPF interface cost globally.

C. Change the OSPF metric type from E2 to E1.

D. Change the OSPF administrative distance.

E. Change the OSPF default metric.

Discussion 0

Correct Answer: A Vote an answer

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Question #7

What does the command 'rep admin vlan 100' accomplish?

A. confines flooding of REP messages to VLAN 100

B. this is an invalid command

C. forces VLAN 100 into a REP block state

D. reserves REP admin VLAN to 100 so that no REP messages are sent on VLAN 100

Discussion 0

Correct Answer: A Vote an answer

Question #8

Refer to the exhibit.

The access list has been configured on the Gi0/0/0/0 interface in the inbound direction. Which four packets that are sourced from 10.1.1.1 TCP port 1060, if they are routed to the Gi0/0/0/0 interface, will be permitted? (Choose four)

A. destination IP address: 192.168.15.46, destination TCP port: 80

B. destination IP address: 192.168.15.49, destination TCP port: 8080

C. destination IP address: 192.168.15.36, destination TCP port: 80

D. destination IP address: 192.168.15.37, destination TCP port: 8080

E. destination IP address: 192.168.15.41, destination TCP port: 8080

F. destination IP address: 192.168.15.49, destination TCP port: 80

Discussion 0

Correct Answer: A,B,C,F Vote an answer

Question #9

ISPs use which protocol to establish peering sessions in an Internet exchange point environment?

A. BGP

B. OSPF

C. LDP

D. IS-IS

Discussion 0

Correct Answer: A Vote an answer

Free 640-878 Questions for Cisco Building Cisco Service Provider Next-Generation Networks Part 2 640-878 Exam as PDF & Practice Test Engine

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