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Nokia 4A0-115 Nokia Ethernet Virtual Private Network Services Exam Practice Test

Demo: 12 questions
Total 40 questions

Nokia Ethernet Virtual Private Network Services Questions and Answers

Question 1

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 2

Examine the exhibit.

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 3

In the exhibit,

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

Options:

A.

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

B.

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.

C.

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

D.

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

Question 4

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 5

Which of the following EVPN routes are exchanged to support the operation of a multi-homed EVPN VPWS?

Options:

A.

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

B.

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

C.

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

D.

A-D per EVI routes and ES routes only

Question 6

Examine the exhibit.

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 7

In the exhibit,

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

Options:

A.

CEI generates an update message to PEI withdrawing its MAC.

B.

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

C.

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

D.

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

Question 8

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 9

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

Options:

A.

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

Question 10

Which of the following statements about EVPN auto-discovery per Ethernet segment (A-D per ES) routes is TRUE?

Options:

A.

The updates include an Ethernet segment identifier label that is used in loop prevention.

B.

The updates advertise the Ethernet segment availability in a given EVPN service.

C.

The updates include an MPLS label that is set to a non-zero value.

D.

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

Question 11

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

Options:

A.

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

B.

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

C.

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

D.

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

Question 12

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

Options:

A.

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

B.

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

C.

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

D.

EVPN-MPLS provides services over a simple IP network.

Demo: 12 questions
Total 40 questions