4A0-116 Exam Preparation Material | Nokia Segment Routing Exam

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Question#1

Which of the following statements about the Path Computation Element (PCE) is FALSE?

A. The PCE can obtain topology and traffic-engineering information from the network using either a link-state IGP or BGP-L

B. A stateful PCE proactively monitors all the existing LSPs and triggers the necessary repairs and re-optimizations.

C. A stateless PCE can calculate cross-area traffic-engineering-constrained LSP paths.

D. A stateful PCE can allow LSPs to reserve bandwidth.

Explanation:
Stateful PCE can monitor the existing LSPs and trigger necessary repairs and re-optimizations, but it does not have the capability to reserve bandwidth.

Question#2

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 LS

Question#3

To create a flex-algo instance in a network, which of the following configuration steps is mandatory?

A. Configuring the proper values for the shared-risk link groups (SRLGs) that will define the flex-algo topology.

B. Configuring at least one router in the network to create and advertise the flex-algo definition.

C. Specifying whether the LSP paths will be computed locally or by an external path computation element (PCE).

D. Configuring LSPs between every pair of PE routers.

Explanation:
To create a flex-algo instance in a network, it's mandatory to configure at least one router in the network to create and advertise the flex-algo definition, This is the first step in creating a flex-algo instance, and it's done by defining the flex-algo instance and its properties on one or more routers in the network.
The other steps are important to fine-tune the flex-algo instance, but not mandatory to create it.
✑ Configuring the proper values for the shared-risk link groups (SRLGs) that will define the flex-algo topology.
✑ Specifying whether the LSP paths will be computed locally or by an external path computation element (PCE).
✑ Configuring LSPs between every pair of PE routers.

Question#4

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.

Question#5

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.

Explanation:
Intermediate routers do not maintain any tunnel informal: this statement is false, Intermediate routers do maintain tunnel information, such as the Forwarding Information Base (FIB) to forward the packets according to the path specified in the packets.

Exam Code: 4A0-116
Q & A: 40 Q&As Updated: Oct 07,2026

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Exam Code: 4A0-116
Q & A: 40 Q&As
Updated: Oct 07,2026

Access Complete 4A0-116 Preparation Material