Question No. 1

Based upon the exhibit, which of the following statements is FALSE?

APEI populates this information into the local VPLS FDB.

BNeighbors 10.10.10.2 and 10.10.10.3 have proxy-ARP enabled for the VPLS.

CNeighbors 10.10.10.2 and 10.10.10.3 have a service that uses a network identifier of 10.

DPEI uses VXLAN tunnels to reach neighbors 10.10.10.2 and 10.10.10.3.

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Correct Answer: D

PE1 does not use VXLAN tunnels to reach neighbors 10.10.10.2 and 10.10.10.3. PE1 uses MPLS tunnels to reach these neighbors, as indicated by the MPLS label values in the output.

Question No. 2

The interface-ful numbered model is used for a Layer-3 EVPN service. Which of the following statements is FALSE?

AEVPN routes are advertised with a service label associated with the SBD VPLS.

BIP-Prefix routes exchanged between PES include a non-zero gateway IP address as an overlay index.

CEVPN MAC/IP routes are used to advertise the MAC and IP addresses of local hosts.

DEVPN MAC/IP routes are used to advertise the MAC and IP addresses of SBD IRB interfaces.

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Correct Answer: D

EVPN MAC/IP routes are not used to advertise the MAC and IP addresses of SBD IRB interfaces.EVPN MAC/IP routes are used to advertise the MAC and IP addresses of local hosts attached to the SBD VPLS2.

Verified Reference:Nokia Ethernet Virtual Private Network Services Course | Nokia

Question No. 3

In the exhibit, PE2 is receiving an EVPN auto-discovery (A-D) route from PEI. Based on the output, which of the following statements is FALSE?

AThis route is an A-D per EVPN instance (A-D per EVI) route advertised by PEI for a VPWS.

BThis route indicates that the EVPN service configured on PEI is multi-homed.

CThis route indicates that the EVPN service is configured on PEI with an EVPN instance (EVI) of 113.

DThis route indicates that the EVPN service is configured on PEI with a service MTU of 1514.

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Correct Answer: D

This route indicates that the EVPN service is configured on PE1 with a service MTU of 1500, not 1514. The service MTU is indicated by the MPLS label value in hexadecimal format. The MPLS label value of 0x05DC corresponds to a decimal value of 1500.

Question No. 4

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

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

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

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

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

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Correct Answer: C

When the PE learns a local host IP address, it does not add an entry into its proxy-ARP table. The proxy-ARP table is populated by snooping IP packets received from remote PEs. The PE advertises a MAC/IP route that includes the MAC and IP address of a local host.

Question No. 5

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

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

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

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

DEVPN-MPLS provides services over a simple IP network.

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Correct Answer: D

EVPN-MPLS provides services over an MPLS network, not a simple IP network.The customer data is encapsulated with an MPLS label that identifies the service and then tunneled between the PE routers using MPLS LSPs1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Free Nokia 4A0-115 Exam Actual Questions

The questions for 4A0-115 were last updated On Nov 16, 2024