Question No. 1

In the exhibit, the EVPN-IRB is configured to use the interface-ful unnumbered model. Which of the following statements regarding the route advertisement is FALSE?

APEI advertises an EVPN IP-Prefix route for prefix 10.10.1.0/24 to PE3. The BGP update includes MAC-OI as on overlay index.

BPEI advertises an EVPN MAC route for MAC-OI to PE3. The BGP update includes the route-target value configured for VPRN 15.

CPE3 advertises a VPN-IPv4 route for prefix 10.10.1.0/24 to PE4. The BGP update includes an MPLS service label.

DPE4 advertises an EVPN IP-Prefix route for prefix 10.10.1.0/24 to PE2. The BGP update includes MAC-04 as an overlay index.

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Correct Answer: D

PE4 does not advertise an EVPN IP-Prefix route for prefix 10.10.1.0/24 to PE2.PE4 advertises a VPN-IPv4 route for prefix 10.10.1.0/24 to PE2, which includes the MPLS service label of VPRN 152.

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

Question No. 2

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. 3

In the exhibit, the interface-less forwarding model is used for the Layer-3 EVPN service. Which of the following statements about traffic forwarding from Host 1 to Host 2 is FALSE?

APEI consults the FDB of RVPLS 1 and forwards the traffic to the local interface of VPRN 11.

BPEI encapsulates the packet with two labels: an outer transport label and an inner service label.

CPE2 inspects the service label and determines that it is associated with RVPLS 2.

DPE2 consults the FDB of RVPLS 2 and forwards the traffic to Host 2.

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Correct Answer: B

PE1 does not encapsulate the packet with two labels: an outer transport label and an inner service label.PE1 encapsulates the packet with three labels: an outer transport label, a service label associated with VPRN 11, and a service label associated with RVPLS 11.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Question No. 4

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

APE2 advertises this BGP update for a locally-configured VPWS service.

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

CPEI uses MPLS label 524284 when sending traffic destined to

DNeighbor 10.10.10.2 is connected to a multi-homed CE.

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Correct Answer: B

PE1 uses this BGP update to build the flooding list of the associated service. The update contains an IMET route that indicates that neighbor 10.10.10.2 is participating in a VPLS service with a network identifier of 10.

Question No. 5

Examine the exhibit.

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

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

BPE3 advertises an IMET route to PEI when its VPLS 20's mesh-SDP becomes operationally UP.

CPE3 signals a service label to PE4 when its VPLS 20 is enabled and is bound to an operational SDP.

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

Show Answer

Correct Answer: D

PE1 does not advertise a MAC route for MAC-01 when its VPLS 20's SAP becomes operationally UP.PE1 advertises an EVPN MAC/IP route for MAC-01, which includes the IP address of Host 1 and the ESI of the Ethernet segment1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

Free Nokia 4A0-115 Exam Actual Questions

The questions for 4A0-115 were last updated On Nov 3, 2024