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Nokia Ethernet Virtual Private Network Services Question and Answers

Nokia Ethernet Virtual Private Network Services

Last Update May 10, 2024
Total Questions : 40

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Questions 1

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?

Options:

A.  

PEI

B.  

PE2

C.  

PE3

D.  

PE4

Discussion 0
Questions 2

Based upon the exhibit, how many MAC-VRFs are there?

Options:

A.  

1

B.  

2

C.  

3

D.  

4

Discussion 0
Questions 3

In the exhibit, VPWS 4 enables communications between CEI and CE2. Which of the following statements regarding the operation of VPWS 4 is FALSE?

Options:

A.  

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

B.  

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

C.  

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

D.  

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

Discussion 0
Questions 4

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.

Discussion 0
Questions 5

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?

Options:

A.  

MAC-OI

B.  

MAC-03

C.  

MAC-04

D.  

MAC-11

Discussion 0
Questions 6

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

Discussion 0
Questions 7

Which of the following statements about multi-homing for a Layer-2 service is TRUE?

Options:

A.  

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

B.  

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

C.  

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

D.  

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

Discussion 0
Questions 8

Examine the exhibit.

Which of the following configuration is NOT required to enable Layer-2 communication between CEI and CE2?

Options:

A.  

Configure an MP-BGP session that allows the exchange of EVPN routes between PEI and PE3.

B.  

Configure an MP-BGP session that allows the exchange of IPv4 labeled routes between PE3 and PE4.

C.  

Configure a service distribution point (SDP) on PE3 to reach PE4, and another SDP on PE4 to reach PE3.

D.  

Configure a local attachment circuit (AC) and a remote AC for VPWS 4 on all PE routers.

Discussion 0
Questions 9

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

Options:

A.  

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

B.  

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

C.  

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

D.  

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

Discussion 0
Questions 10

Which of the following statements about the EVPN Layer 2 Attributes extended community is FALSE?

Options:

A.  

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

B.  

It is applicable to EVPN VPLS services.

C.  

It specifies the service maximum transmission unit (MTU).

D.  

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

Discussion 0
Questions 11

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

Options:

A.  

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

B.  

To advertise the redundancy mode of a local Ethernet segment

C.  

To discover all PES participating in the same VPIS service

D.  

To discover all PES attached to the same Ethernet segment

Discussion 0
Questions 12

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?

Options:

A.  

PEI

B.  

PE2

C.  

PE3

D.  

PE4

Discussion 0