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

Liberal label retention mode

Conservative label retention mode

Ordered control mode

Independent control mode

RSVP-TE operates in a downstream unsolicited label advertisement mode.

RSVP-TE makes use of ordered control mode.

RSVP-TE is an MPLS signaling protocol, based on the resource reservation protocol.

RSVP-TE enables the establishment of explicitly routed LSPs that can be automatically routed away from network failures

RSVP-TE supports explicitly routed LSPs using either loose or strict route definitions.

L1 routers

L2 routers

L1/L2 routers

L1 and L2 routers

Each PLR will signal a bypass tunnel that avoids the next-hop node or link.

When a failure occurs, the PLR will push an additional label onto the label stack and start forwarding traffic onto its bypass tunnel.

The ingress router will include a RRO object in the path message to indicate the routers that should be PLRs and MPs along the protected path.

The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish bypass tunnels.

When the bypass tunnel is in use, the MP will include the RRO object in its PathErr message, with the local protection in use flag set to notify the ingress router that it is using the bypass tunnel.