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4A0-106 Nokia Virtual Private Routed Networks Questions and Answers

Questions 4

Click the exhibit.

For the inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?

Options:

A.

PE1 pushes two labels on the IP packet and forwards it to ASBR1.

B.

ASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.

C.

ASBR2 forwards the IP packet with two labels to PE2.

D.

PE2 pops the labels and forwards the unlabeled IP packet to its destination.

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Questions 5

What is wrong with the VPRN configuration applied on this Nokia 7750 SR?

Options:

A.

The VPRN ID must match the value 101 used in the vrf-target command.

B.

The VPRN ID must match the value 101 used in the route-distinguisher command.

C.

The router-id command should not be used in this context.

D.

The “no shutdown” command must be configured for the VPRN to be operationally UP.

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Questions 6

On an Nokia 7750 SR, which CLI command displays the Route Target(s) associated to a prefix?

Options:

A.

Show router bgp routes

B.

Show router route-table summary

C.

Show router bgp routes vpn-ipv4 detail

D.

Show router route-table

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Questions 7

For the data packets in a VPRN, how is the inner label in an MPLS packet signaled?

Options:

A.

Signaled via MP-BGP and used to identify the egress PE.

B.

Signaled via T-LDP and used to identify the customer VPRN.

C.

Signaled via MP-BGP and used to identify the customer VPRN.

D.

Signaled via RSVP and LDP and used to identify the egress PE.

E.

Signaled via RSVP and LDP and used to identify the customer VPRN.

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Questions 8

Click the exhibit.

The headquarter sites of VPRN 10 and VPRN 20 are part of an extranet VPRN. Which route targets should be exported under the VPRN 20 service on router R1?

Options:

A.

Target:65100:2 and target:65100:3

B.

Target:65100:1 and target:65100:2

C.

Target:65100:1 and target:65100:3

D.

Target:65100:1, target:65100:2 and target:65100:3

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Questions 9

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). Which route is NOT present in PE1's global routing table?

Options:

A.

192.60.100.0

B.

10.10.10.6

C.

10.10.10.3

D.

192.50.1.1

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Questions 10

Which of the following about a full mesh VPRN is FALSE?

Options:

A.

Dual CEs connected to redundant PEs can provide redundancy within a single site.

B.

Site redundancy can be achieved by dual homing a single CE to one or more PEs.

C.

Provider core LSPs can be LDP-based or RSVP-based.

D.

The provider core maintains a full mesh of LSP tunnels and MP-BGP sessions between all P devices.

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Questions 11

Click the exhibit.

For the PE hub and spoke VPRN, on which PE(s) should the VPRN service command target export target: 65100:1 import target: 65100: 2 " be configured?

Options:

A.

PE1

B.

PE2, PE3 and PE4

C.

PE1, PE2, PE3 and PE4

D.

This command is not required for the configuration of this PE hub and spoke VPRN.

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Questions 12

What are the two primary problems the service provider must consider when providing traditional Layer 3 VPN services using only a single common routing table in the provider core? (Choose two)

Options:

A.

Memory exhaustion in the provider core

B.

Route leaking between the customer networks

C.

CPU utilization for route processing

D.

Unwanted packet forwarding between customer networks

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Questions 13

In a provider core consisting of 6 PE and 4 P routers, what is the minimum number of BGP sessions required in total for correct operation of VPRN services?

Options:

A.

0

B.

5

C.

10

D.

15

E.

45

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Questions 14

Click the exhibit.

The AS-override method is used to prevent BGP loops in the blue customer VPRN. Which statement about the configuration is TRUE?

Options:

A.

the configuration is complete and correct.

B.

'as-override' should be configured under the BGP context.

C.

'as-override' should be configured under the group context.

D.

'as-override' should not be part of this configuration.

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Questions 15

Which of the following protocols are supported by the Nokia 7750 SR for the creation of transport tunnels within an autonomous system?

Options:

A.

MP-BGP, LDP, RSVP-TE

B.

LDP, RSVP-TE, GRE

C.

MP-BGP, RSVP-TE, GRE

D.

MP-BGP, LDP

E.

MP-BGP only

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Questions 16

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). If CE1 sends an IP packet to 192.60.100.1, which of the following is FALSE?

Options:

A.

PE1 pushes an LDP transport label.

B.

CSC-PE1 pops the BGP label and pushes two labels: a VPN label and an MPLS transport label.

C.

CSC-PE2 pops the MPLS transport label and pushes a BGP label.

D.

CSC-CE2 pops the BGP label and pushes an LDP transport label.

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Questions 17

For Carrier Supporting Carrier (CSC) VPRN, which of the following is NOT applicable to both types of customer carriers: BGP/MPLS service providers and Internet service providers?

Options:

A.

eBGP is used for route and label exchange between CSC-CE and CSC-PE routers.

B.

iBGP can be used to distribute routes between CSC-CE and PE routers.

C.

MP-iBGP is used to advertise routes between the CSC-PE routers.

D.

MP-iBGP is used to advertise end-customer and Internet routes directly between the PE routers.

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Questions 18

Click the exhibit.

For the inter-AS model C VPRN, which router is configured as shown?

Options:

A.

PE1

B.

RR1

C.

ASBR1

D.

ASBR2

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Questions 19

When a Service Provider offers VPRN services to its customers, which of the following functions are expected to be the responsibility of the Service Provider? (Choose three)

Options:

A.

Distributing the customer generated labels between sites

B.

Distributing the customer routing information between

C.

Forwarding the customer originated data packets to the appropriate destination

D.

Forwarding the provider originated data packets to the appropriate customer site

E.

Providing secure layer 3 routing exchange between sites

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Questions 20

Click the exhibit.

Internet access using route leaking between the VRF and the global routing table is configured in the network. Which of the following is the correct output of route 192.168.50.1 in the global routing table of PE3?

Options:

A.

A

B.

B

C.

C

D.

D

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Questions 21

Click the exhibit.

Based on the VPRN aggregate route configuration, which routes are advertised to CE2?

Options:

A.

172.12.10.0/24, 172.12.20.0/24 and 172.0.0.0/16

B.

172.12.0.0/16 only

C.

172.12.10.0/24 and 172.12.20.0/24

D.

172.0.0.0/16 only

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Questions 22

In a VPRN, what type of logical topology is required for the BGP sessions configured in the provider core?

Options:

A.

Full mesh between all CE, PE and P devices

B.

Full mesh between PE and P devices

C.

Full mesh of P devices

D.

Full mesh of PE devices

E.

Full mesh between PE and CE devices

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Questions 23

Which statement about assigning one Route Distinguisher per VPN is TRUE?

Options:

A.

This approach is recommended when multiple sites advertise the same prefix.

B.

This approach limits the opportunities for load balancing.

C.

This approach requires additional memory on the PEs to store more routes.

D.

This approach is recommended for extranet VPN.

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Questions 24

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Nokia 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?

Options:

A.

Configuring iBGP sessions between PEs residing in different customer carrier sites,

B.

Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

C.

Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.

D.

Configuring an IES service on PEL

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Questions 25

Which of the following about inter-AS model AVPRN is TRUE?

Options:

A.

It is the most scalable of the Inter-AS models.

B.

VRF configuration is not required on the ASBRs.

C.

Most routers that support VPRN functionality do not support model A by default.

D.

It is not necessary to run MPLS at the boundary between autonomous systems.

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Questions 26

What is the purpose of the Route Distinguisher?

Options:

A.

It defines the VPN membership

B.

It defines which routes are imported into the vrf

C.

It defines which routes are exported from the vrf

D.

It is used to make IPv4 addresses unique

E.

It is used as the VPN label

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Questions 27

Click the exhibit.

An extranet VPRN is configured on Nokia 7750 SRs. On which router(s) should the displayed configuration be applied?

Options:

A.

Router R1

B.

Router R2

C.

Routers R1 and R2

D.

Router R3

E.

Router R4

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Questions 28

For the Inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?

Options:

A.

PE1 pushes three labels on the IP packet: a VPN label, a BGP label, and an LDP transport label.

B.

ASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.

C.

ASBR2 swaps the BGP label and pushes an LDP transport label.

D.

PE2 pops all labels and forwards the unlabeled packet to its destination.

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Questions 29

Click the exhibit.

For the extranet VPRN and community lists shown, which of the following communities will be included in the export policy applied to VPRN 20 on router R2?

Options:

A.

"Blue-Only"

B.

"Blue-Only" and "Blue-Green"

C.

"Green-Only"

D.

"Extranet-VPN-Green"

E.

"Blue-Green"

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Questions 30

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Nokia 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?

Options:

A.

Configuring iBGP sessions between PEs residing in different customer carrier sites.

B.

Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

C.

Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.

D.

Configuring an IES service on PEL

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Questions 31

Click the exhibit.

Internet access is provided to the Red VPRN (ID 10) via an Internet VRF (ID 500). For this configuration, which communities must be imported on the Red and Internet VRFs?

Options:

A.

Red VRF imports only "Internet"

Internet VRF imports only "Red-Only"

B.

Red VRF imports "Internet" and "Red-Only"

Internet VRF imports only "Red-Only"

C.

Red VRF imports only "Red-Only"

Internet VRF imports "Red-Only" and "Internet"

D.

Red VRF imports "Internet" and "Red-Only"

Internet VRF imports only "Internet"

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Questions 32

Click the exhibit.

For the inter-AS model B VPRN, which of the following is TRUE when CE2 sends an IP packet to 192.168.1.1?

Options:

A.

PE2 pushes one label on the IP packet and forwards it to ASBR2.

B.

ASBR2 sends the IP packet with one label to ASBR1.

C.

ASBR1 sends the IP packet with one label to PEL

D.

PE1 pops one label off the IP packet and forwards it to CE1.

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Nokia Service Routing Architect | 4A0-106 Questions Answers | 4A0-106 Test Prep | Nokia Virtual Private Routed Networks Questions PDF | 4A0-106 Online Exam | 4A0-106 Practice Test | 4A0-106 PDF | 4A0-106 Test Questions | 4A0-106 Study Material | 4A0-106 Exam Preparation | 4A0-106 Valid Dumps | 4A0-106 Real Questions | Nokia Service Routing Architect 4A0-106 Exam Questions

Exam Code: 4A0-106
Exam Name: Nokia Virtual Private Routed Networks
Last Update: May 16, 2024
Questions: 214
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