[2023] Easy To Download 4A0-116 Actual Exam Dumps Resources [Q21-Q39]

NO.21 Based on the exhibit, which of the following statements about fast re-route for flex-algo instance 129 is TRUE?

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

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

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

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

NO.22 Examine the exhibit.

An LSP is being configured to start at R1 and 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?

R1, R2, R4, R6

R1, R5, R6

R1, R3, R5, R6

R1, R6

NO.23 Which of the following statements about a Segment Routing SID is FALSE?

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

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

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

An Adjacency-SID does not have to be configured.

NO.24 Based on the exhibit, and given that the system IP address of router RIO is 10.10.10.10, which of the following statements is FALSE?

Router Rl participates in at least two flex-algo instances.

Router RIO participates in flex-algo instance 130.

The Node-SID assigned to router RIO for flex-algo instance 129 is 524338.

The underlying routing protocol being used in the network for segment routing is IS-IS.

NO.25 Which of the following statements about Segment Routing tunnels is FALSE?

A Segment Routing tunnel defined by a Node-SID uses the shortest IGP Path.

A Segment Routing tunnel can be defined by multiple Node-SIDs.

A Segment Routing tunnel can be defined by a combination of Node-SIDs and Adjacency-SIDs.

For a Segment Routing tunnel, an intermediate router will always forward the packet based on the best IGP path.

NO.26 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?

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

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

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

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

NO.27 OSPF is being used for segment routing with traffic-engineering (SR-TE). The traffic-engineering option has been set to “sr-te false”. Which of the following statements is TRUE?

The TE information will be advertised for all the OSPF links that have MPLS enabled.

The TE information will only be advertised using application-specific sub-TLVs.

The TE information will only be advertised for the OSPF links that have both MPLS and RSVP enabled.

The TE information will only be advertised using extended-link opaque LSAs.

NO.28 Which of the following is NOT an advantage of using a PCE for the computation of TE-constrained LSP paths, as compared to using CSPF locally on the PE router?

The ability to create cross-area TE-constrained LSP paths

The ability to create LSP paths with bandwidth reservation

The ability to create LSPs with primary and secondary paths

The ability to ensure that some LSP paths are disjoint

NO.29 Which of the following statements about SR-TE administrative constraints is FALSE?

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

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

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

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

NO.30 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

NO.31 A router participating in SR-TE is advertising a value of Ox11 for the admin-group membership of one of its interfaces. Which of the following statements is TRUE?

The interface belongs to admin group RED, configured with a value of 17.

The interface belongs to two different admin groups.

The interface belongs to three different admin groups.

The interface belongs to four different admin groups.

NO.32 Based on the configuration shown for routers R1 and R10, what valid flex-algo definitions exist in the network?

No valid flex-algo definitions, because of the conflicting parameters.

One valid flex-algo definition, using delay as the link metric and including green links.

One valid flex-algo definition, using te-metric as the link metric and including blue links.

Two valid flex-algo definitions, one uses te-metric as the link metric and includes blue links and the other uses delay as the link met includes green links.

NO.33 Which of the following list of SR-TE attributes has to be advertised among routers?

Administrative groups that each link belongs to, TE metric of links, bandwidth availability of each link, SRLG that each link belongs to.

Administrative groups that each link belongs to, TE metric of links, SRLG that each link belongs to.

Administrative groups that each link belongs to, TE metric of links, bandwidth availability of each link, SRLG that each link belongs to, link status up/down.

Administrative groups that each link belongs to, TE metric of links, SRLG that each link belongs to, link status up/down.

NO.34 Which of the following statements about a Segment Routing SID is FALSE?

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

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

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

An Adjacency-SID does not have to be configured.

NO.35 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.

NO.36 Which of the following statements about the operation of seamless-BFD is FALSE?

Seamless-BFD responses are sent back using the LSP label stack.

To be able to respond to seamless-BFD messages, a router must be configured as a reflector.

A seamless-BFD template needs to be configured on the head-end of the LSP.

The routing protocol (OSPF or IS-IS) is used to carry the reflector discriminator information.

[2023] Easy To Download 4A0-116 Actual Exam Dumps Resources [Q21-Q39]

[2023] Easy To Download 4A0-116 Actual Exam Dumps Resources [Q21-Q39]

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