Pass Nokia 4A0-115 Exam Quickly With It-Tests [Q20-Q37] – IT Certification Exam Questions & Answers

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Pass Nokia 4A0-115 Exam Quickly With It-Tests

Prepare 4A0-115 Question Answers – 4A0-115 Exam Dumps

Nokia 4A0-115 Exam Syllabus Topics:

Topic	Details
Topic 1	Use of EVPN to support Layer-3 routing EVPN basic operation
Topic 2	Operation of a single-active EVPN VPWS EVPN route types advertised to support EVPN VPWS
Topic 3	Operation of preference-based DF election algorithm Aliasing mechanism used to enable load-balancing
Topic 4	Configuring an EVPN VPLS using MPLS encapsulation EVPN-VXLAN and EVPN-MPLS interconnect for a VPLS
Topic 5	Layer-3 symmetric interface-ful numbered model EVPN route types advertised to support EVPN-IRB
Topic 6	Configuring an EVPN VPLS using VXLAN encapsulation Use of EVPN MAC routes to populate the VPLS FDB tables
Topic 7	EVPN route types advertised to support EVPN VPLS Use of EVPN IMET routes to populate the VPLS flooding lists
Topic 8	Split-horizon mechanism used to prevent flooding BUM traffic back to originating ES
Topic 9	Use of EVPN for data center services EVPN route types required to support multi-homing

QUESTION 20
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

QUESTION 21
Which of the following statements about the operation of a single-homed EVPN VPWS is TRUE?

The same tag ID must be configured for the local attachment circuit (AC) at each PE.

Each PE advertises a MAC route and an A-D per EVI route when its local AC becomes operationally UP.

The advertised A-D per EVI route includes a non-zero tag ID and a non-zero MPLS label.

Each PE verifies that the received tag ID matches its configured local AC tag ID.

QUESTION 22
What are EVPN inclusive multicast Ethernet tag (IMET) routes used for?

To advertise the MAC or MAC/IP addresses of locally-learned hosts

To advertise the redundancy mode of a local Ethernet segment

To discover all PES participating in the same VPIS service

To discover all PES attached to the same Ethernet segment

QUESTION 23
Examine the exhibit.

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

PEI brings the SAP in VPWS 4 operationally down.

PE3 sets the P flag in its advertised A-D per EVI route to I.

PE2 receives a single A-D per EVI route. The route is originated from PE3.

PE2 receives two A-D per ES routes: one from PEI and another from PE3.

QUESTION 24
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.

QUESTION 25
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?

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

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

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

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

QUESTION 26
A Layer-3 EVPN service is configured to use the interface-ful unnumbered forwarding model. Which of the following statements isFALSE?

Each participating PE advertises a MAC/IP route that carries the MAC address of SBD IRB interface.

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

The VPRN service is configured to allow the advertisement of IP prefixes.

The SBD IRB interface configured in the VPRN service has no IP address assigned to it.

QUESTION 27
Which of the following statements about EVPN auto-discovery per EVPN instance (A-D per EVI) routes is FALSE?

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

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

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

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

QUESTION 28
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.

QUESTION 29
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.

QUESTION 30
Based on the exhibit below, which of the following statements is TRUE?

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

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

PEI uses MPLS label 524284 when sending traffic destined to

Neighbor 10.10.10.2 is connected to a multi-homed CE.

QUESTION 31
In the exhibit,

VPLS 20 is associated with a single-active Ethernet segment on routers PEI and PE3. Which of the following statementsis FALSE?

PEI advertises an A-D per ES route which indicates that ESI 1 is operating in a single-active redundancy mode.

PEI advertises an A-D per EVI route which includes a P flag set to I to indicate that PEI is the DF for EVI 20.

PE3 advertises an A-D per ES route which indicates that ESI I is operating in a single-active redundancy mode.

When PEI learns MAC-01, it advertises a MAC/IP route which indicates that MAC-OI is associated with ESI I.

QUESTION 32
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.

QUESTION 33
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.

QUESTION 34
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.

QUESTION 35
In the exhibit,

MACI moves from PEI to PE2. Which of the following actions related to this MAC address mobility is performed?

CEI generates an update message to PEI withdrawing its MAC.

PEI generates an update message to remote PES identifying the new location of CEI.

PE2 advertises a MAC/IP route for MACI with a sequence number higher than that received from PEI.

PE3 waits to receive a data packet from CEI to update its FDB entry for MACI.

Real Nokia 4A0-115 Exam Questions [Updated 2023]: https://www.it-tests.com/4A0-115.html

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