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Nokia 4A0-115 Nokia Ethernet Virtual Private Network Services Exam Practice Test

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Total 40 questions
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Nokia Ethernet Virtual Private Network Services Questions and Answers

Question 1

Proxy-ARP/ND is operational for a VPLS. Which of the following statements is FALSE?

Options:

A.

The PE has proxy-ARP and dynamic-populate enabled for the VPLS.

B.

The proxy-ARP table is populated by snooping IP packets received from remote PEs.

C.

When the PE learns a local host IP address, it adds an entry into its proxy-ARP table.

D.

The PE advertises a MAC/IP route that includes the MAC and IP address of a local host.

Question 2

In the exhibit, an EVI range is configured and the preference-based algorithm is used to elect the designated forwarder (DF) on ESI 1. Which PE is elected as DF for VPLS 10?

Question # 2

Options:

A.

PEI

B.

PE2

C.

PE3

D.

PE4

Question 3

In the exhibit, the interface-ful numbered model is used for the Layer-3 EVPN service. Which of the following is used as the source MAC address in the packets sent from PEI when forwarding customer traffic to Host 2?

Question # 3

Options:

A.

MAC-OI

B.

MAC-03

C.

MAC-04

D.

MAC-11

Question 4

Examine the exhibit.

Question # 4

Which of the following statements about the operation of VPLS 20 is TRUE?

Options:

A.

The flooding list maintained by PEI for VPLS 20 contains three entries: PE2, PE3, and PE4.

B.

PE3 advertises an IMET route to PEI when its VPLS 20's mesh-SDP becomes operationally UP.

C.

PE3 signals a service label to PE4 when its VPLS 20 is enabled and is bound to an operational SDP.

D.

PEI advertises a MAC route for MAC-OI when its VPLS 2(Ys SAP becomes operationally UP.

Question 5

Which of the following statements about EVPN auto-discovery per EVPN instance (A-D per EVI) routes is FALSE?

Options:

A.

A PE uses the received updates to create aliasing lists to PES that are part of an all-active Ethernet segment.

B.

A PE advertises an A-D per EVI route for each operational service defined on an Ethernet segment.

C.

The updates include an Ethernet tag ID that is set to zero.

D.

The updates are used to discover all the PES associated with an Ethernet segment.

Question 6

Based on the exhibit below, which of the following statements is TRUE?

Question # 6

Options:

A.

PE2 advertises this BGP update for a locally-configured VPWS service.

B.

PEI uses this BGP update to build the flooding list of the associated service.

C.

PEI uses MPLS label 524284 when sending traffic destined to

D.

Neighbor 10.10.10.2 is connected to a multi-homed CE.

Question 7

Based upon the exhibit, how many MAC-VRFs are there?

Question # 7

Options:

A.

1

B.

2

C.

3

D.

4

Question 8

An operator configures an EVPN-IRB that uses the interface-ful unnumbered forwarding model on a Nokia 7750 service router. Which ofthe following statements regarding the configuration performed on each participating PE is FALSE?

Options:

A.

A supplementary broadcast domain (SBD) is configured as a routed VPLS.

B.

A VPRN service is configured and has an interface bound to the local VPLS.

C.

The advertisement of IP-Prefix routes is enabled in the SBD VPLS.

D.

An IP address is configured in the VPRN interface that is bound to the SBD VPLS.

Question 9

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

Question # 9

Options:

A.

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

B.

PE3 advertises an IMET route to PEI as soon as VPWS 4 is administratively enabled.

C.

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

D.

PE3 and PE4 exchange their service labels over an established targeted LDP session.

Question 10

Examine the exhibit.

Question # 10

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

Options:

A.

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

B.

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

C.

PE2 advertises an A-D per EVI route that includes a P flag set to I.

D.

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

Question 11

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 12

Which of the following statements about the EVPN data plane is FALSE?

Options:

A.

EVPN allows a service provider to deliver multiple services over a single core network.

B.

The customer data is encapsulated and then tunneled between the PE routers.

C.

EVPN-MPLS encapsulated data has a label that uniquely identifies each service.

D.

EVPN-MPLS provides services over a simple IP network.

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