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Nokia 4A0-116 Exam Syllabus Topics:

Topic	Details
Topic 1	Configuring segment routing LSPs calculated by the PCE SR-TE with a path computation element
Topic 2	Link-state routing protocol extensions to support traffic engineering Configuring OSPF to advertise TE information
Topic 3	Segment routing tunnels with traffic engineering constraints Enabling traffic engineering
Topic 4	Using segment routing tunnels with TE constraints (SR-TE) Label stack reduction for CSPF-calculated paths
Topic 5	Advertisement of flex-algo information by OSPF Flexible algorithm configuration Flexible algorithm basics
Topic 6	Topology-Independent Loop-Free Alternate (TI-LFA) paths Remote Loop-Free Alternate (R-LFA) paths
Topic 7	Local calculation of a TE-constrained LSP path Secondary LSP paths and seamless-BFD Ensuring LSP path diversity

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Nokia Segment Routing Exam Sample Questions (Q28-Q33):

NEW QUESTION # 28
Which of the following statements about a Segment Routing SID is FALSE?

• A. A Prefix-SID can be configured directly as a label value or indirectly as an index.
• B. A Node-SID is usually associated with a router's system interface.
• C. An Adjacency-SID does not have to be configured.
• D. Adjacency-SID values are taken from the SRGB configured for the routing protocol.

Answer: C Explanation:
An Adjacency-SID does not have to be configured: this statement is not true, An Adjacency-SID is associated with a neighbor router, it is used to identify an adjacency between two routers. An Adjacency-SID must be configured to identify the adjacency.
NEW QUESTION # 29
Which of the following statements about path definitions is FALSE?

• A. In addition to the hops defined in the path list, the head-end and tail-end routers are implicitly added.
• B. A loose hop is one that does not have to be directly adjacent to the previous hop in the path list
• C. The path hops can be defined by either the system or physical interface IP address.
• D. Once a path is associated with an LSP, it cannot be used by other LSPs.

Answer: C
NEW QUESTION # 30
Which of the following statements about Segment Routing tunnels is FALSE?

• A. A Segment Routing tunnel can be defined by a combination of Node-SIDs and Adjacency-SIDs.
• B. For a Segment Routing tunnel, an intermediate router will always forward the packet based on the best IGP path.
• C. A Segment Routing tunnel defined by a Node-SID uses the shortest IGP Path.
• D. A Segment Routing tunnel can be defined by multiple Node-SIDs.

Answer: B Explanation:
an intermediate router in a Segment Routing tunnel may forward packets based on the specific SIDs defined in the Segment Routing tunnel and not always the best IGP path.
NEW QUESTION # 31
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. 0
• B. 1
• C. 2
• D. 3

Answer: D
NEW QUESTION # 32
Which of the following statements about Segment Routing is FALSE?

• A. Intermediate routers do not maintain any tunnel informal
• B. No path signaling is required to establish an SR tunnel.
• C. For TE-constrained tunnels, each data packet typically carries a single MPLS label to specify the tunnel path.
• D. A link-state IGP is required to distribute SID information.

Answer: A 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.
NEW QUESTION # 33
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