Nokia 4A0-106 Exam Practice Test Instant Access

Question 1

Which of the following statements about the control plane in Carrier Supporting Carrier (CSC) VPRN is FALSE?

AThe customer carrier does not learn any network provider routes.

BThe network provider must learn the customer carrier PE and CE system addresses.

CRoutes exchanged between CSC-CE and CSC-PE are labeled.

DThe customer carrier PE system addresses are populated in the CSC VRF.

Answer : B

Question 2

For the Inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?

APE1 pushes three labels on the IP packet: a VPN label, a BGP label, and an LDP transport label.

BASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.

CASBR2 swaps the BGP label and pushes an LDP transport label.

DPE2 pops all labels and forwards the unlabeled packet to its destination.

Answer : B

Question 3

Which of the following statements about inter-AS model C VPRNs is FALSE?

AVPN-IPv4 routes are neither held, nor re-advertised, by the ASBRs.

BEach ASBR propagates the routes received from its neighbor ASBR as labeled IPv4 routes in its own AS.

CASBRs exchange labeled IPv4 routes for the system addresses of PE routers.

DASBRs exchange customer routes as labeled IPv4 routes.

Answer : D

Question 4

For the Inter-AS model VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

APE2 pushes two labels on the IP packet and forwards it to ASBR2.

BASBR2 forwards the IP packet with one label to ASBR1.

CASBR1 label-switches the packet and forwards it with one label to PE1.

DPE1 forwards an unlabeled IP packet to CE1.

Answer : C

Question 5

Which of the following about inter-AS model B VPRN is FALSE?

AModel B does not require the configuration of VPRN instances on ASBRs.

BThe ASBRs peer with each other to transport VPN-IPv4 routes between autonomous systems.

CPE routers distribute VPN-IPv4 routes to their local ASBR.

DOne single ASBR is required in each AS to hold the routes for all VPRNs.

Answer : D

Question 6

Click the exhibit.

The CLI command "remove-private" is configured on PE1 to eliminate BGP loops in the VPRN. For the displayed route, what is the value of the AS-Path field?

A64496 64512

B64512

C64496

D64512 64496

Answer : C

Question 7

What operation does a P device perform when it receives a labeled packet for a VPRN service?

AIt forwards the packet based on the label signaled by MP-BGP.

BIt decrements the TTL and forwards the packet based on the inner label.

CIt swaps the outer label then forwards the packet.

DThe P router does not perform any operations on labeled packets.

Answer : C

Nokia 4A0-106 Nokia Virtual Private Routed Networks Exam Practice Test