Nokia 4A0-116 Exam Questions Instant Access

Question 1

Which of the following statements about Segment Routing is FALSE?

ANo path signaling is required to establish an SR tunnel.

BIntermediate routers do not maintain any tunnel informal

CA link-state IGP is required to distribute SID information.

DFor TE-constrained tunnels, each data packet typically carries a single MPLS label to specify the tunnel path.

Answer : B

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.

Question 2

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

AA local Node-SID can be configured directly as an MPLS label.

BA router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index.

CAll routers do NOT need to have the same SRGB range configured.

DA local Node-SID can be configured as an index.

Answer : B

A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index: This statement is not true, A router will advertise its local Node-SID as a local SRGB and an index, whether it is configured as an index or not.

Question 3

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

ALocal Node-SID

BAdjacency-SIDs

CSupport for SR-MPLS for IPv4 or IPv6, or SRv6

DSRGB when SRv6 is configured

Answer : D

SRGB when SRv6 is configured: This is not required to be advertised, SRGB(Segment Routing Global Block) is only used for SR-MPLS and is not needed when SRv6 is configured. Instead, SRv6 uses the IANA-assigned IPv6 address space.

Question 4

Which of the following statements about enabling and using traffic engineering for Segment Routing is FALSE?

AOne interface can belong to an admin group and SRLG group at the same time.

BA link attribute has to be assigned to a particular interface under the [/configure router interface] context

CBandwidth availability as a link attribute cannot be configured.

DThe interfaces used for SR-TE LSPs have to be added to the MPLS context.

Answer : C

Bandwidth availability can be configured as a link attribute in SR-TE, it is used to control the amount of traffic that can be sent over a particular link.

Question 5

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

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

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

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

DConfiguring LSPs between every pair of PE routers.

Answer : B

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 6

Based on the exhibit, which of the following is a viable option for the Path Computation Element (PCE) to obtain all the necessary topology and traffic-engineering information from the network, so that it can calculate LSP paths on behalf of the PE routers?

AEstablishing an IGP adjacency with router R2

BEstablishing IGP adjacencies with routers R1 and R2

CEstablishing a BGP session using the BGP-LS address family with router R3

DEstablishing BGP sessions using the BGP-LS address family with routers R3 and R4

Answer : D

Question 7

Which of the following statements about Segment Routing tunnels is FALSE?

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

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

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

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

Answer : D

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.

Nokia Segment Routing 4A0-116 Exam Questions