Prepare for the Actual Nokia Service Routing Architect 4A0-115 Exam Practice Materials Collection [Q19-Q34]

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Prepare for the Actual Nokia Service Routing Architect 4A0-115 Exam Practice Materials Collection

Nokia Service Routing Architect Certified Official Practice Test 4A0-115 – Aug-2024

NO.19 Which of the following statements about the EVPN data plane is FALSE?

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

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

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

EVPN-MPLS provides services over a simple IP network.

NO.20 Based on the exhibit below, which of the following statements is FALSE?

When forwarding BUM traffic, the local PE must replicate the traffic and send it as unicast to the advertising neighbor.

The MPLS label 524284 presented indicates the service label value that the neighbor 10.10.10.2 uses to forward BUM traffic to PEI.

When forwarding BUM traffic, the local PE uses an MPLS transport tunnel towards the advertising neighbor.

The IMET route is imported by a local VPLS configured with a route-target value of 65100:10.

NO.21 In the exhibit, the default algorithm is used to elect the designated forwarder (DF) on ESI 1. Which PE is elected as DF for VPLS 10?

PEI

PE2

PE3

PE4

NO.22 Examine the exhibit.

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

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

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

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

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

NO.23 Examine the exhibit.

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

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

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

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

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

NO.24 In the exhibit, the EVPN-IRB is using the interface-ful unnumbered model and is fully operational. Which of the following statements isFALSE?

An MP-BGP session that supports the advertisement of VPN-IPv4 routes is established between PE3 and PE4.

An MP-BGP session that supports the advertisement of EVPN routes is established between PEI and PE2.

On PE3, the routing table for VPRN 15 contains an entry for 10.10.1.0/24. This entry is resolved to MAC-OI as an overlay index.

On PE3, the routing table for VPRN 15 contains an entry for 10.10.4.0/24. This entry is resolved using a transport tunnel towards PEA.

NO.25 Which of the following EVPN routes are exchanged to support the operation of a multi-homed EVPN VPWS?

Auto-discovery per EVPN instance (A-D per EVI) routes and Auto-discovery per Ethernet segment (A-D per ES) routes only

MAC/IP routes, A-D per EVI routes, and A-D per ES routes

A-D per EVI routes, A-D per ES routes, and Ethernet segment (ES) routes

A-D per EVI routes and ES routes only

NO.26 Which of the following statements about PE-to-PE MAC address advertisement is FALSE?

The service distinguisher (label or VNI) is advertised with the MAC/IP EVPN update.

Route targets are used to uniquely identify routes between EVIS in the case of MAC address overlaps.

A PE uses a single MP-BGP session with a remote peer to exchange the routes for all EVIs.

A PE advertises locally-learned MAC addresses to remote PES using EVPN type-2 routes.

NO.27 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?

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

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

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

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

NO.28 Which of the following best describes the operation of a non-designated forwarder (non-DF) in a single-active Ethernet segment?

Blocks Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM

Allows Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM

Blocks Tx unicast, blocks Rx unicast, blocks Tx BUM, blocks Rx BUM

Allows Tx unicast, blocks Rx unicast, allows Tx BUM, blocks Rx BUM

NO.29 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?

PEI

PE2

PE3

PE4

NO.30 Which of the following statements does NOT describe the operation of the Layer-3 EVPN asymmetric forwarding model?

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

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

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

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

NO.31 Which of the following statements about the EVPN Layer 2 Attributes extended community is FALSE?

It is advertised with the auto-discovery per EVPN instance (A-D per EVI) route.

It is applicable to EVPN VPLS services.

It specifies the service maximum transmission unit (MTU).

It specifies a P flag that indicates whether the advertising PE is a primary PE.

NO.32 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?

MAC-OI

MAC-03

MAC-04

MAC-11

NO.33 In the exhibit, VPWS 4 enables communications between CEI and CE2. Which of the following statements regarding the operation of VPWS 4 is FALSE?

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

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

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

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

NO.34 Based upon the exhibit, which of the following statements is FALSE?

PEI populates this information into the local VPLS FDB.

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

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

PEI uses VXLAN tunnels to reach neighbors 10.10.10.2 and 10.10.10.3.

Nokia 4A0-115 Exam Syllabus Topics:

Topic	Details
Topic 1	Use of EVPN for data center services EVPN route types required to support multi-homing
Topic 2	Split-horizon mechanism used to prevent flooding BUM traffic back to originating ES
Topic 3	EVPN route types advertised to support EVPN VPLS Use of EVPN IMET routes to populate the VPLS flooding lists
Topic 4	Operation of a single-active EVPN VPWS EVPN route types advertised to support EVPN VPWS
Topic 5	Operation of preference-based DF election algorithm Aliasing mechanism used to enable load-balancing
Topic 6	Use of EVPN routes to populate route tables EVPN integrated routing and bridging (IRB) architecture
Topic 7	Configuring an EVPN VPLS using MPLS encapsulation EVPN-VXLAN and EVPN-MPLS interconnect for a VPLS