Refer to the exhibit.
A network engineer with an employee id: 3812:12:993 has started to configure router R1 for IS-IS as shown.
Which additional configuration must be applied to configure the IS-IS instance to advertise only network prefixes associated to passive interfaces?
Refer to the exhibit:
This configuration is being applied on an IOS XR router.
Which statement about this configuration is true?
Refer to the exhibit. A network operator working for a telecommunication company with an employee 3994:37:650 is implementing a cisco Unified MPLS solution.
What is the effect of this implementation?

Refer to the exihibit.
Refer to the exhibit. A network administrator implemented MPLS routing between routers R1, R2, R3, and R4. AToM is configured between R1 and R4 to allow Layer 2 traffic from hosts on RA1 and RA2. A targeted MPLS session is established between R1 and R4. Which additional action must the administrator take on all routers so that LDP synchronization occurs between connected LDP sessions?
Refer to the exhibit. Routers CE1 and CE2 support users in different locations, but the users require Layer 2 to operate within the company intranet. A pseudowire is configured between CE1 and CE2 to support these Layer 2 services. The connection is occasionally unstable, so an engineer has been asked to monitor it periodically. How should the engineer verify connectivity between sites over the Layer 2 connection?