4A0-116 Sample Questions Answers

Only standard LFA is enabled on router R1; fast re-route is not enabled on router R2.

Only standard LFA is enabled on both routers R1 and R2.

Standard LFA and remote-LFA are enabled on router R1; fast re-route is not enabled on router R2.

Standard LFA and remote-LFA are enabled on router R1; standard LFA and TT-LFA are enabled on router R2.

A Node-SID is usually associated with a router's system interface.

Adjacency-SID values are taken from the SRGB configured for the routing protocol.

A Prefix-SID can be configured directly as a label value or indirectly as an index.

An Adjacency-SID does not have to be configured.

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MPLS label range reserved for Segment Routing.

Enable interfaces used for Segment Routing under

The flooding scope of Segment Routing information.

The Segment Routing Global Block range.

Using a flex-algo Node-SID as an explicit hop in the path definition of an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

Specifying the flex-algo instance ID as an additional TE constraint for an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

Configuring and applying a VRF import policy to a VPRN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

Configuring and applying a VSI import policy to an EVPN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

Once a path is associated with an LSP, it cannot be used by other LSPs.

A loose hop is one that does not have to be directly adjacent to the previous hop in the path list

The path hops can be defined by either the system or physical interface IP address.

In addition to the hops defined in the path list, the head-end and tail-end routers are implicitly added.

A local Node-SID can be configured directly as an MPLS label.

A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index.

All routers do NOT need to have the same SRGB range configured.

A local Node-SID can be configured as an index.

No path signaling is required to establish an SR tunnel.

Intermediate routers do not maintain any tunnel informal

A link-state IGP is required to distribute SID information.

For TE-constrained tunnels, each data packet typically carries a single MPLS label to specify the tunnel path.

Only one LSP path forwards the traffic at any time,

Up to three paths can be configured for a given SR-TE LS

The primary path is always preferred over a secondary pa

Preference values can be configured for non-standby secondary paths.