Click on the exhibit. AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. AS 65541 is advertising prefix 192.168.1.0/27 into BGP. Which routers have the BGP update for the advertised prefix in their BGP table?

Routers R1, R2, R3 and R4 only.

Which of the following describes the setting of the l-SID on the Alcatel-Lucent 7750 SR?

The I-SID is set to the service-id, unless the service-id is larger than a 24 bit value. In this case the I-SID must be explicitly configured.

The I-SID is set to 0 by default and is only used for interop purposes. The receiving PE uses the service label to determine the I-VPLS.

There is no default value. The I-SID must always be explicitly configured

The I-SID is always set to the service-id by default.

Click the exhibit. A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier offering VPRN services. Which of the following about this configuration is FALSE?

In the CSC VPRN, configure an eBGP session between CSC-PE and CSC-CE and use the 'advertise-label vpn-ipv4' CLI command to enable the advertisement of VPN-IPv4 routes.

When the customer carrier uses the same autonomous system number in various sites, use the 'loop-detect off' CLI command to disable the loop detection functionality on CSC-CE and PE routers.

On the CSC-PE routers, use the 'carrier-carrier-vpn' CLI command to configure the VPRN service as CSC.

Configure an iBGP session between PE1 and PE2 and use the 'family vpn-ipv4' CLI command to directly exchange end-customer routes learned from CE1 and CE2.

In Active/Standby pseudowires a failed pseudowire has recovered. Under what circumstances will the active pseudowire revert to the previously failed link?

It will revert if the precedence of the previously failed link is set to 0 or 'primary'.

It will always revert to the previously failed link.

It will never revert to the previously failed link.

It will revert if the precedence of the previously failed link is lower than the currently active link

Free Nokia 4A0-C02 Exam Practice Questions & Explanations

Last updated on: Aug 25, 2026
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