Free Nokia Segment Routing Exam 4A0-116 Exam Practice Test

Which of the following statements about segment routing fast re-route is FALSE?

• Fast re-route is a temporary fix that becomes active for a short period of time after a local network failure.
• Fast re-route typically protects the active segment of a tunnel, but under certain conditions it can protect an end-to-end multi-segment tunnel instead.
• On a Nokia 7750 SR, R-LFA and TI-LFA can be enabled independently of each other.
• The parameter "max-sr-frr-labels" limits the number of labels that R-LFA can add to the data packet encapsulation.

Which of the following statements about Segment Routing is FALSE?

• 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.

Which of the following is not required to be advertised by a router participating in Segment Routing?

• Local Node-SID
• Adjacency-SIDs
• Support for SR-MPLS for IPv4 or IPv6, or SRv6
• SRGB when SRv6 is configured

Which of the following types of information is considered by a stateless PCE when it processes a new LSP path calculation request?

• The IGP link-state database
• The traffic-engineering database
• The operational state of existing LSP paths
• The amount of bandwidth reserved for each of the existing LSP paths

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

• Configuring the proper values for the shared-risk link groups (SRLGs) that will define the flex-algo topology.
• Configuring at least one router in the network to create and advertise the flex-algo definition.
• 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.

OSPF type-10 Opaque LSAs can carry different types of advertisements. What type of advertisement carries a router's local 5RGB information?

• Extended Prefix Info
• Router Info
• Extended Link Info
• Traffic Engineering Info

In the context of a network that includes a Path Computation Element (PCE), what is a PCC-initiated LSP?

• An LSP that needs to be explicitly configured on the head-end router.
• An LSP for which the initial path is calculated by the head-end router.
• An LSP for which the path repairs and re-optimizations must be triggered by the head-end router.
• An LSP whose existence and state are reported to the PCE.

Which of the following statements about Multi-Protocol Label Switching networks is FALSE?

• MPLS uses a signaling protocol to exchange labels between routers.
• An LSR forwards data based on the MPLS labels.
• An LSP is a bi-directional tunnel that uses MPLS labels to forward data.
• The data is transparently carried from end to end.

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

• 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.

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?

• Only segments defined by a Node-SID.
• Only segments defined by an Adjacency-SID.
• Segments defined by a Node-SID and segments defined by an Adjacency-SID.
• No segments, unless segment-routing fast-reroute is also explicitly enabled.