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Question 21

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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.
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.
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.
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.
A-D per Ethernet segment routes indicate the desired designated forwarder election algorithm.
Suggested answer: A
Explanation:

Ethernet segment (ES) routes indicate the redundancy mode of the Ethernet segment.The redundancy mode can be either single-active or all-active, and it determines how traffic is forwarded to and from a multi-homed CE1.

Verified

Reference:Ethernet Virtual Private Networks (EVPNs)

asked 23/09/2024
Gufran Dalwai
52 questions

Question 22

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

The updates include an Ethernet segment identifier label that is used in loop prevention.
The updates include an Ethernet segment identifier label that is used in loop prevention.
The updates advertise the Ethernet segment availability in a given EVPN service.
The updates advertise the Ethernet segment availability in a given EVPN service.
The updates include an MPLS label that is set to a non-zero value.
The updates include an MPLS label that is set to a non-zero value.
The updates include an Ethernet tag ID that is set to zero.
The updates include an Ethernet tag ID that is set to zero.
Suggested answer: D
Explanation:

EVPN auto-discovery per Ethernet segment (A-D per ES) routes do not include an Ethernet tag ID that is set to zero.The Ethernet tag ID is set to a non-zero value that identifies the EVPN service instance1.

Verified

Reference:Ethernet Virtual Private Networks (EVPNs)

asked 23/09/2024
Bas Vogel
45 questions

Question 23

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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 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.
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 include an Ethernet tag ID that is set to zero.
The updates are used to discover all the PES associated with an Ethernet segment.
The updates are used to discover all the PES associated with an Ethernet segment.
Suggested answer: B
Explanation:

A PE does not advertise an A-D per EVI route for each operational service defined on an Ethernet segment. A PE advertises a single A-D per EVI route for all services defined on an Ethernet segment.

asked 23/09/2024
jose fajardo
30 questions

Question 24

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Which of the following best describes the operation of a non-designated forwarder (non-DF) in a single-active Ethernet segment?

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Question 25

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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?

Nokia 4A0-115 image Question 25 80518 09232024011859000000

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Question 26

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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?

Nokia 4A0-115 image Question 26 80519 09232024011859000000

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Question 27

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Examine the exhibit.

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

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Question 28

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In the exhibit,

Nokia 4A0-115 image Question 28 80521 09232024011859000000

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

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Question 29

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

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Question 30

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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?

Nokia 4A0-115 image Question 30 80523 09232024011859000000

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Total 40 questions
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