Verified 4A0-115 dumps Q&As - 100% Pass from DumpTorrent [Q14-Q35]

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NO.14 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.15 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.

NO.16 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.17 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.

NO.18 Which of the following statements about the EVPN route types used to support multi-homing is TRUE?

Ethernet segment (ES) routes indicate the redundancy mode of the Ethernet segment.

ES routes provide the ESI label required to support the split-horizon mechanism.

Auto-discovery (A-D) routes are imported by all PES participating in the EVPN service.

A-D per Ethernet segment routes indicate the desired designated forwarder election algorithm.

NO.19 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.

NO.20 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.

NO.21 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.22 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?

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

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

PE2 inspects the service label and determines that it is associated with RVPLS 2.

PE2 consults the FDB of RVPLS 2 and forwards the traffic to Host 2.

NO.23 Which of the following statements about EVPN Layer-3 services that utilize the interface-ful model is TRUE?

EVPN MAC/IP routes are used to advertise the IP prefixes of subnets attached to a VPRN.

VPRN instances are interconnected using a supplementary broadcast domain (SBD) VPLS.

Intra-subnet traffic is carried over the tunnels provided by the SBD VPLS.

The MAC/IP routing information is used to populate the VPRN routing table at the remote PEs.

NO.24 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.

NO.25 Which of the following statements about multi-homing for a Layer-2 service is TRUE?

In the single-active mode, the CE requires a LAG to be configured between the CE and all attached PEs.

In the single-active mode, the CE forwards traffic to all attached PES and receives traffic from a single PE.

In the all-active mode, all PES attached to a CE can forward traffic to and from the CE.

The Nokia 7750 SR supports a CE being multi-homed to a maximum of two PEs.

NO.26 Proxy-ARP/ND is operational for a VPLS. Which of the following statements is FALSE?

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

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

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

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

NO.27 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

NO.28 Examine the exhibit.

Which of the following actions is performed by PEI after it receives a BUM packet from CEI?

PEI does not flood the packet because PEI is acting as non-designated forwarder (non-DF) for VPLS 10.

PEI sends the packet to PE2 but not to PE3 because PE3 is connected to the originating ES.

PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE2.

PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE3.

NO.29 Based upon the exhibit, how many MAC-VRFs are there?

Nokia 4A0-115 Exam Syllabus Topics:

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

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