Nokia Updated 4A0-C01 Exam Questions and Answers by aila

PSNPs are used on point-to-point links to acknowledge the receipt of an LSP.

There are three types of PSNPs: Level 1, Level 2, and Level 1/2.

A PSNP lists some of the LSPs in the router's database.

PSNPs are used by an IS-IS router to request LSP information from a neighboring router.

configure router mpls retry-timer 30

configure router mpls resignal-timer 30

configure router mpls retry-attempts 30

configure router mpls global-revertive 30

An L1/L2 router can have adjacencies with routers in different areas.

An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.

An L1/L2 router advertises its L2 routes to other L1 routers in the same area.

An L1/L2 router sets the ATT bit in L1 LSPs to indicate that it has routes to other areas.

Admin groups can be configured using the command "configure>router>mpls>admin-group".

CSPF uses the information defined by admin groups when paths are computed for constraint-based LSPs.

By default, interfaces for which MPLS has been enabled are in the default admin group.

A LSP can make use of admin groups for constraint-based path calculations by including or excluding the admin group