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4A0-116 Nokia Segment Routing Exam Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-116 Nokia Segment Routing Exam certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Loopfree-alternate has been enabled on a router for its link-state routing protocol. For which types of segments will the router attempt to find a backup path, so that they become protected by fast re-route?

A.

Only segments defined by a Node-SID.

B.

Only segments defined by an Adjacency-SID.

C.

Segments defined by a Node-SID and segments defined by an Adjacency-SID.

D.

No segments, unless segment-routing fast-reroute is also explicitly enabled.

When OSPF is used to support Segment Routing, the first byte of the link-state ID associated with each of the opaque LSAs indicates the type of information being advertised. Which of the following associations between the first-byte value and its meaning is FALSE?

A.

Value 1 - Traffic Engineering

B.

Value 4 - Router Info

C.

Value 7 - SRGB Range

D.

Value 8 - Extended Link Info

Examine the exhibit.

An LSP is being configured to start at R1and end at R6 using local CSPF. The LSP has the following constraints. Include admin-group GREEN, use the TE metric and hop-limit 3. What routers will be included in the LSP path?

A.

R1, R2, R4, R6

B.

R1, R5, R6

C.

R1, R3, R5, R6

D.

R1, R6

Which of the following statements about a Segment Routing SID is FALSE?

A.

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

B.

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

C.

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

D.

An Adjacency-SID does not have to be configured.

Which of the following statements about SR-TE administrative constraints is FALSE?

A.

A strict hop must be adjacent to the previous hop in the list.

B.

The TE metric for a link is by default the same as the IGP metric.

C.

Shared-Risk-Link Groups are only taken into account when calculating the secondary path.

D.

The head-end router may calculate a path that takes into account max hop count and bandwidth constraints.

Based on the exhibit, which of the following statements about fast re-route for flex-algo instance 129 is TRUE?

A.

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

B.

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

C.

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

D.

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

The exhibit highlights in blue the primary path of a segment going from router S to router D. The exhibit also shows a backup path. The protected link fails and fast re-route is triggered on router S. If the backup path has been calculated using standard LFA, how many SIDs are included in the label stack of the data packet forwarded to router R1?

A.

1

B.

2

C.

3

D.

4

The exhibit presents packets being transmitted inside an LSP's multi-segment primary path going from router R1 to router R8. The LSP also has a standby secondary path, and Seamless-BFD has been enabled on the primary path. The link between routers R1 and R2 fails, and fast re-route (FRR) is triggered. As a result, router R1 forwards the packets to router R3 and adds the proper FRR encapsulation to reach which router?

A.

To reach router R2, which is the LSP's intended next-hop.

B.

To reach router R5, which is the shortest way to go back to the original path.

C.

To reach router R4, which is the tail-end of the active segment.

D.

To reach router R8, which is the tail-end of the LSP.

Which of the following steps is NOT required when configuring IS-IS to support Segment Routing?

A.

MPLS label range reserved for Segment Routing.

B.

Enable interfaces used for Segment Routing under

C.

The flooding scope of Segment Routing information.

D.

The Segment Routing Global Block range.

Which of the following statements about primary and secondary SR-TE LSP paths is FALSE?

A.

Only one LSP path forwards the traffic at any time,

B.

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

C.

The primary path is always preferred over a secondary pa

D.

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

Which of the following is NOT one of the main goals of traffic engineering?

A.

Utilizing redundant links.

B.

Avoiding potential congestion points in the network.

C.

Defining traffic paths based on various constraints.

D.

Using the shortest possible path through the network to the destination.

Which of the following statements about Segment Routing is FALSE?

A.

No path signaling is required to establish an SR tunnel.

B.

Intermediate routers do not maintain any tunnel informal

C.

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

D.

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

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