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

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Viewing questions 51-60 out of questions

Questions # 51:

Click the exhibit.

Question # 51

Routers RR1 and RR2 are configured as route reflectors. For the inter-AS model C VPRN, which of the following about the VPN-IPv4 route advertisement is FALSE?

Options:

RR2 advertises the VPN-IPv4 route update of 192.2.1.0/27 to RR1

RR1 advertises the VPN-IPv4 route update of 192.1.1.0/27 to RR2

RR2 advertises the VPN-IPv4 route update of 192.1.1.0/27 to PE2

PE1 advertises the VPN-IPv4 route update of 192.1.1.0/27 to RR1 and ASBRL

Answer

Questions # 52:

Which of the following is not a valid BGP design for a network provider supporting VPRNs?

Options:

Full mesh of MP-BGP between all P devices

Full mesh of MP-BGP between PE devices

Route reflector configuration between PE devices

Confederation configuration between PE devices

Answer

Questions # 53:

Click the exhibit.

Question # 53

For the Inter-AS model B VPRN, which of the following about the inter-as-label output on ASBR1 is TRUE?

Options:

ASBR1 includes label 131069 in the route update sent to ASBR2.

ASBR1 includes label 131068 in the route update sent to ASBR2.

ASBR1 includes label 131068 in the route update sent to PEL

ASBR1 includes labels 131068 and 131069 in the route update sent to ASBR2.

Answer

Questions # 54:

Click the exhibit.

Question # 54

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

Options:

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

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

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

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

Answer

Questions # 55:

VPN-IPv4 addressing is made unique by defining an address structure consisting of:

Options:

A 64-bit Route Target followed by a 32-bit IPv4 address.

A 64-bit Route Distinguisher followed by a 32-bit IPv4 address.

A 32-bit Route Distinguisher followed by a 32-bit IPv4 address.

A 32-bit Route Target followed by a 32-bit IPv4 address.

Answer

Questions # 56:

Click the exhibit.

Question # 56

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

Options:

the configuration is complete and correct.

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

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

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

Answer

Questions # 57:

Click the exhibit.

Question # 57

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:

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

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

ASBR2 forwards the IP packet with two labels to PE2.

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

Answer

Questions # 58:

Which of the following about BGP loops in a VPRN environment is TRUE?

Options:

Traditional BGP loop detection mechanisms are unable to detect a loop in a VPRN scenario.

BGP loops are detected in a VPRN when the customer has separate sites using the same BGP autonomous system number.

The Nokia 7750 SR rejects routes containing AS_PATH loops by default.

When "remove-private" is configured at a PE, all routes received from the associated CE will have private AS numbers removed.

Answer

Questions # 59:

Click the exhibit.

Question # 59

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?