4A0-116: Nokia Segment Routing ExamDemo

By Nokia · Question Mode

QuestionQ12

Flexible algorithms (flex-algo)

In which of the following areas does configuring Flex-Algo LSPs offer an advantage over configuring SR-TE LSPs?

  • A Label stack size of the encapsulated data packets
  • B List of traffic-engineering constraint types available to choose from
  • C Ability to associate one primary and up to two secondary paths to the same LSP
  • D Flexibility of configuring each LSP with its own set of traffic-engineering constraints
Explanation

Flex-Algo distributes a common Flexible Algorithm Definition so routers compute paths that satisfy its topology and metric constraints. Traffic can then be steered using a Flex-Algo Prefix SID, which can reduce the MPLS label-stack depth—potentially to a single segment—compared with an SR-TE LSP that encodes an explicit path as a stack of segments. Flex-Algo is a reduced form of traffic engineering, not a mechanism for independently assigning each LSP its own constraint set.

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