Most Recent Nokia 4A0-115 Exam Dumps

Prepare for the Nokia Ethernet Virtual Private Network Services exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

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The questions for 4A0-115 were last updated on Mar 29, 2025.

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Question No. 1

In the exhibit, VPWS 4 enables communications between CEI and CE2. Which of the following statements regarding the operation of VPWS 4 is FALSE?

APEI advertises an auto-discovery per EVPN instance (A-D per EVI) route to PE3 as soon as the SAP becomes operationally

BPE3 advertises an IMET route to PEI as soon as VPWS 4 is administratively enabled.

CPEI and PE3 exchange their service labels using A-D per EVI routes.

DPE3 and PE4 exchange their service labels over an established targeted LDP session.

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Correct Answer: C

PE1 and PE3 do not exchange their service labels using A-D per EVI routes.PE1 and PE3 exchange their service labels using MAC routes, which are advertised when their local ACs become operationally UP1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Question No. 2

Examine the exhibit.

Which of the following statements about the EVPN routes exchanged for EVPN VPWS 2 is TRUE?

APEI advertises an A-D per EVI route that includes a tag ID set to 40.

BPEI advertises an A-D per EVI route that includes a non-zero Layer-2 MTLJ.

CPE2 advertises an A-D per EVI route that includes a P flag set to I.

DAll PES advertise a MAC route that includes a non-zero MPLS label.

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Correct Answer: D

All PEs do not advertise a MAC route that includes a non-zero MPLS label. Only PE1 advertises a MAC route that includes a non-zero MPLS label, which is used by PE2 to forward traffic to PE1.PE2 and PE3 do not advertise any MAC routes for VPWS 21.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Question No. 3

Examine the exhibit.

Which of the following configuration conditions is required for the proper operation of EVPN VPWS 2?

AThe local AC tag ID configured on PE2 must match the local AC tag ID configured on PEI.

BThe remote AC tag ID configured on PE2 must match the remote AC tag ID configured on PE3.

CThe local AC tag ID and the remote AC tag ID configured on PE2 must match.

DThe local AC tag ID configured on PEI must match the local AC tag ID configured on PE3.

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Correct Answer: A

The local AC tag ID configured on PE2 must match the local AC tag ID configured on PE1. This ensures that the tag IDs are consistent across both ends of the VPWS service.The remote AC tag ID configured on PE2 does not need to match the remote AC tag ID configured on PE3, as long as they are unique within each PE1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Question No. 4

Examine the exhibit.

Which of the following statements about the operation of EVPN VPWS 4 is FALSE?

APEI brings the SAP in VPWS 4 operationally down.

BPE3 sets the P flag in its advertised A-D per EVI route to I.

CPE2 receives a single A-D per EVI route. The route is originated from PE3.

DPE2 receives two A-D per ES routes: one from PEI and another from PE3.

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Correct Answer: B

PE3 does not set the P flag in its advertised A-D per EVI route to 1. PE3 sets the P flag to 0, indicating that it is not the DF for EVI 20.PE1 sets the P flag to 1, indicating that it is the DF for EVI 201.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Question No. 5

Which of the following statements does NOT describe the operation of the Layer-3 EVPN asymmetric forwarding model?

AAll VPLS instances must be configured on all PES regardless of whether they have a local host or not.

BEVPN IP-Prefix routes are used to populate the VPRN VRF tables.

CThe egress PE does not perform any Layer-3 route look up to forward traffic.

DThe ingress PE performs both Layer-2 and Layer-3 look ups when forwarding traffic between subnets.

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Correct Answer: A

All VPLS instances do not need to be configured on all PEs regardless of whether they have a local host or not. Only the VPRN instance needs to be configured on all PEs, while the VPLS instances are configured only on PEs that have a local host attached to them.

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