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4A0-C01 Nokia NRS II Composite Exam Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-C01 Nokia NRS II Composite Exam certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 852 questions

Click on the exhibit.

An LDP-over-RSVP tunnel is established between routers R1 and R6. There is a VPN service running between routers R1 and R6. Which of the following is TRUE?

A.

Router R3 swaps both the RSVP-TE LSP label and LDP transport label received with new labels.

B.

Router R3 swaps the VPN service label received with a new label.

C.

Router R3 uses the same RSVP-TE LSP label as the one received from router R2.

D.

Router R3 uses the same LDP transport label as the one received from router R2.

Which of the following about CAC is FALSE?

A.

CAC is used when the LSP path has not been computed by CSPF.

B.

CAC is used when the LSP path has been computed by CSPF.

C.

CAC is used to perform a bandwidth check on each egress interface of the downstream router.

D.

CAC is used to perform a bandwidth check based on the router's LSDB.

Click on the exhibit.

An LSP's primary path takes R1-R3-R5-R6. Its fully loose secondary path is configured for SRLG. All links are of equal cost. Which path will the secondary path take?

A.

The secondary path will take R1-R3-R2-R4-R6.

B.

The secondary path will take R1-R2-R4-R6.

C.

The secondary path will take R1-R2-R3-R5-R6.

D.

The secondary path will take R1-R3-R2-R4-R5-R6.

SAPs in an Epipe service can only be configured on Ethernet ports

A.

TRUE

B.

FALSE

What happens when a packet without a VLAN tag is received on a SAP provisioned with null encapsulation while an SDP vc-type is provisioned as vlan?

A.

The frame is dropped.

B.

The service ID is added as the VLAN tag.

C.

A VLAN tag of 0 is added as the provider VLAN tag

D.

The frame is forwarded with no VLAN tag

In a Layer 2 encapsulation, using Martini, what does the first (top) label represent?

A.

Tunnel Label

B.

VC Label

C.

Operational Control Word

D.

UNI

E.

NNI

Which of the following most accurately describes the default behavior of a VPLS regarding the handling of a tagged frame at the ingress of SAP 1/1/1:100?

A.

The FCS is verified and the customer frame is transported intact over the service provider network.

B.

The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

C.

The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.

D.

The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

A technician sitting in a Network Operations Center would like to set up a remote mirror on an Alcatel-Lucent 7750 Service Router to examine some data traffic ingressing a port at a remote site. Which of the following are required? (Choose 2)

A.

A mirror destination on the local and remote Alcatel-Lucent Service Router,

B.

A mirror source on the local and remote Alcatel-Lucent Service Router.

C.

A mirror source with the remote source specified on the remote Alcatel-Lucent Service Router.

D.

A mirror source with the remote source specified on the local Alcatel-Lucent Service Router.

E.

An SDP between the local and remote Alcatel-Lucent Service Routers.

Click on the exhibit.

An LDP tunnel is established on R1-R2-R4-R6 because the link between routers R3 and R6 is down. With the LDP-IGP Sync feature enabled, what happens immediately after the link is restored?

A.

A new LDP session is established on R1-R3-R6 as soon as the FIB is updated.

B.

The LDP session remains unchanged until the existing path R1-R2-R4-R6 goes down.

C.

A new LDP session is established on R1-R3-R6 as soon as router R1 receives a new label for router R6.

D.

The LDP session remains unchanged until router R3 stops advertising the maximum metric for the link to router R6.

Click on the exhibit.

A fully loose LSP "toR6" is configured. All links have the same cost and all routers are Alcatel-Lucent 7750 SRs. The LSP currently traverses the path R1-R2-R7-R8-R4-R6 and the resignal timer is enabled. Which of the following about this LSP is FALSE?

A.

The LSP will switchover to another path if a failure occurs.

B.

The LSP will switchover to a better path as soon as it is available.

C.

CSPF must be enabled for this LSP to attempt to find a better path.

D.

The LSP will switchover to a better path in a MBB fashion.

Which of the following modes are used by RSVP-TE on an Alcatel-Lucent 7750 SR?

A.

Independent control mode, downstream on demand

B.

Independent control mode, downstream unsolicited

C.

Ordered control mode, downstream on demand

D.

Ordered control mode, downstream unsolicited

Which of the following describes 6PE?

A.

P routers run IPv4 only. PE routers run IPv4 only and exchange IPv6 routes using MP-BGP.

B.

P routers run IPv4 only. PE routers run both IPv4 and IPv6 and exchange IPv6 routes using MP-BGP.

C.

P routers run IPv6 only. PE routers run both IPv4 and IPv6 and exchange IPv4 routes using MP-BGP.

D.

P routers run IPv6 only. PE routers run IPv6 only and exchange IPv4 routes using MP-BGP.

Which protocol is used to signal the outer label for a VPN service?

A.

RSVP

B.

IPCP

C.

TLDP

D.

PPP

E.

Either RSVP or LDP

What are the default settings for RSVP-TE on the Alcatel-Lucent 7750 SR?

A.

Per-interface label space, liberal retention mode

B.

Per-platform label space; liberal retention mode

C.

Per-interface label space, conservative retention mode

D.

Per-platform label space, conservative retention mode

An operator needs to provision 6VPE on a 7750 SR that is also used to provide existing IPv4 VPRN services. IPv6 VPRN customers use BGP as a PE-CE protocol. Which of the following statements is FALSE regarding the configuration steps required?

A.

MP-BGP sessions need to be configured in the service provider network to support a VPN-IPv6 address family.

B.

PE routers must be configured to run MP-BGP and IPv6

C.

PE-to-CE BGP sessions need to be configured to support IPv6.

D.

The provider core must be configured to support IPv6

E.

None of the above statements are false.

F.

All of the above statements are false

What can the sdp-ping command be used for? (Choose 2)

A.

To test the ability of reaching the far-end IP address of an SDP within the SDP encapsulation

B.

To determine the path MTU to the far-end IP address over an SDP.

C.

To determine the service MTU of the service using an SDP.

D.

To determine the presence of hosts using the service

Click on the exhibit.

Why might router R2 have a Link LDP session to R1 (10.10.10.1:0) but not to R3 (10.10.10.3:0)?

A.

LDP is not configured on R2.

B.

R2 does not have a route to 10.10.10.3.

C.

LDP is not configured on R3's interface to R2.

D.

The targeted session is not configured on R2.

Which of the following about LSPs is FALSE?

A.

IGP-based LSPs are calculated based on information contained in routing tables.

B.

Constraint-based LSPs are calculated using the head-end router's TED.

C.

Constraint-based LSPs must use RSVP-TE signaling.

D.

IGP-based LSPs must use LDP signaling.

Click on the exhibit.

The link between routers R4 and R6 is down before the LSP is signaled. CSPF is enabled on the LSP. Which of the following conditions is TRUE?

A.

Router R1 sends a PATH message and router R4 sends back a PATH Error message.

B.

Router R1 does not send a PATH message because it detects an error.

C.

Router R1 sends a PATH message and router R4 sends back a PATH Tear message.

D.

Router R1 sends a PATH message and router R4 sends back a RESV Error message.

Click on the exhibit.

All links have 1 Gbps unreserved bandwidth initially and all LSPs have the least-fill feature enabled. After the two LSPs have been signaled as shown, two additional LSPs are configured.

LSP-3 is signaled first with 50Mbps reserved. LSP-4 is signaled after with 400Mbps reserved.

Which paths will CSPF choose for LSP-3 and LSP-4?

A.

Both LSP-3 and LSP-4 take R1-R2-R4-R6.

B.

Both LSP-3 and LSP-4 take R1-R3-R5-R6.

C.

LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

D.

LSP-3 takes R1-R2-R4-R6 and LSP-4 takes R1-R3-R5-R6.

E.

CSPF randomly chooses one of the equal cost paths for the two LSPs.

Which of the two following statements are TRUE?

A.

When an Alcatel-Lucent Service Router is rebooted, the mirror destination and mirror source must be re-configured

B.

A mirror destination is shut down by default on an Alcatel-Lucent Service Router.

C.

A mirror source is shut down by default on an Alcatel-Lucent Service Router.

D.

When an Alcatel-Lucent Service Router is rebooted, the mirror destination must be re-configured.

E.

When an Alcatel-Lucent Service Router is rebooted the mirror source must be re-configured.

Which of the following best describes a VPLS?

A.

Layer 3 direct Internet access service

B.

Layer 2 point-to-point service

C.

Layer 2 multipoint-to-multipoint service

D.

Layer 3 IP multipoint-to-multipoint VPN service

All links have 1Gbps unreserved bandwidth initially and all LSPs have the least-fill feature enabled. After the two LSPs have been signaled as shown, two new LSPs are configured. LSP-3 is signaled first with 600Mbps reserved. LSP-4 is signaled after with 800Mbps reserved. All LSPs have the same setup and hold priorities. Which paths will CSPF choose for LSP-3 and LSP-4?

A.

LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

B.

LSP-3 takes R1-R2-R4-R6 and LSP-4 takes R1-R3-R5-R6.

C.

LSP-3 takes R1-R3-R5-R6 and LSP-4 has no available path.

D.

LSP-3 takes R1-R2-R4-R6 and LSP-4 has no available path.

Which of the following are the default settings for the Alcatel-Lucent 7750 SR when using LDP?

A.

Per-platform label space, conservative retention mode

B.

Per-interface label space, conservative retention mode

C.

Per-platform label space, liberal retention mode

D.

Per-interface label space, liberal retention mode

Which OAM command can be used to verify the correct and consistent provisioning of a service between two service end points?

A.

sdp-ping

B.

Isp-ping

C.

sap-ping

D.

svc-ping

Which of the following describes constraint-based routing?

A.

A mechanism that implements opaque LSAs.

B.

A mechanism that computes routes based on specified requirements.

C.

A mechanism that ensures the IGP best route is used.

D.

A mechanism that enables LDP signaling to use a route other than the IGP best route.

Which of the following about LDP-over-RSVP is TRUE?

A.

RSVP LSPs must exist between each PE-ABR pair, or ABR-ABR pair in each area.

B.

When LDP-over-RSVP is active, the LDP prefixes are resolved to a physical egress interface.

C.

Targeted sessions must exist between all routers along the tunnel path.

D.

Link LDP sessions must exist between each ABR-ABR pair in each area.

Which VPWS service would be used to create a point-to-point Frame Relay service?

A.

Epipe

B.

Apipe

C.

Fpipe

D.

Ipipe

E.

Cpipe

Click on the exhibit.

A fully loose LSP MtoR6" is enabled with FRR protection. All links have the same cost. After the link between R2 and R4 goes down, FRR protection repairs the LSP and traffic traverses on R1-R2-R7-R8-R4-R6. By default, which of the following about this LSP on an Alcatel-Lucent 7750 SR is FALSE?

A.

The LSP will switch to R1-R3-R5-R6 after the resignal timer expires.

B.

The old primary path and its detours are torn down after the new primary path is established.

C.

CSPF must be enabled to find a more optimal path.

D.

The traffic is switched to R1-R3-R5-R6 in an MBB fashion.

Which of the following options are used to configure an MPLS signaling type to be used on an SDP? (Choose 2)

A.

configure service sdp sdp-id gre create

B.

configure service sdp sdp-id create

C.

Idp

D.

Isp Isp-name

In a VPLS service, the mesh-sdp vc-id is identical to the service id by default.

A.

TRUE

B.

FALSE

Which of the following is NOT a service offered on the Alcatel-Lucent 7750 SR?

A.

IES

B.

VPWS

C.

VPLS

D.

VPRN

E.

L2TP

Which of the following statements is TRUE about the VRF?

A.

The VRF is a virtual router on the PE router that contains the customer's routes for the VPRN

B.

Each PE maintains multiple VRFs based on the number of PE peers it connects to.

C.

Each PE has a VRF for each VPRN service provisioned on the router.

D.

All of the above.

E.

Only A and C.

F.

Only A and B

Which of the following messages is NOT used in T-LDP operation?

A.

Hello message

B.

Init message

C.

Keepalive message

D.

Label Mapping message

E.

ACK message

When configuring an IES spoke termination to a VPLS, what must be explicitly configured in order for the service to come up? (Choose 2)

A.

MTU must match on both services,

B.

Mesh-SDP with matching vc-id configured,

C.

Spoke-SDP with matching vc-id configured.

D.

Spoke-SDP.

Which of the following best describes a distributed Epipe Service?

A.

An Epipe that has 2 or more SDPs configured.

B.

An Epipe that has 3 or more SAPs configured.

C.

An Epipe that has 2 SAPs on the same node but no SDPs configured

D.

An Epipe that is configured between two nodes, each having 1 SAP and 1 SDP configured.

Which of the following about MPLS shortcuts for IGP on an Alcatel-Lucent 7750 SR is FALSE?

A.

An IGP route takes priority over a transport tunnel.

B.

Both LDP and RSVP-TE based tunnels can be used.

C.

MPLS tunnels can be used to resolve the prefixes learned via IGP.

D.

Multiple MPLS tunnels can be installed in the FIB.

Click on the exhibit.

An LSP traverses R1-R2-R4-R6 and facility fast reroute with link protection is enabled. All links have the same cost. Which of the following about PLRs and MPs is TRUE?

A.

R1, R2, and R4 can be PLRs; R6 is the MP.

B.

R1, R2, and R4 can be PLRs; R2, R4, and R6 are MPs.

C.

R1, R2, R3, R4, and R5 can be PLRs; R6 is the MP.

D.

R1, R2, R3. R4, and R5 can be PLRs; R2, R4, and R6 is the MP.

Click on the exhibit.

When router R1 forwards a PATH message to router R2, which of the following about the PATH message's IP header is TRUE?

A.

The options field is set to router alert.

B.

The source address is R1's egress interface address.

C.

The destination address is R2's ingress interface address.

D.

The HOP object includes R2's system address.

Which of the following about the use of RRO in fast reroute is FALSE?

A.

RRO is used to report the protection tunnel status to the head-end router.

B.

RRO contains the MP information that is required by a PLR for facility protection.

C.

RRO contains the label information that is expected by an MP for facility protection.

D.

RRO is used to inform downstream routers about the protection type requested.

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Total 852 questions
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