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Nokia 4A0-C01 Exam Made Easy: Step-by-Step Preparation Guide

Questions 181

Which MPLS label mode propagates a label mapping only for the FEC for which a router has a label mapping for the FEC's next-hop?

Options:

A.

Independent control mode

B.

Ordered control mode

C.

Liberal label retention mode

D.

Conservative label retention mode

E.

Downstream on demand label distribution mode

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Questions 182

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4A0-C01 Question 182

An LDP-over-RSVP tunnel is established between PE-1 and PE-2. Which of the following is NOT required to protect the LDP-over-RSVP tunnel?

Options:

A.

PE-1 requires T-LDP sessions to both ABR-1 and ABR-2.

B.

PE-1 requires a full mesh of RSVP-TE LSPs to all routers in area 1.

C.

ABR-1 requires T-LDP sessions to all ABRs in area 0.

D.

PE-1 requires fast reroute enabled on all RSVP-TE LSPs.

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Questions 183

An LSP is configured with one-to-one FRR and node protection on a Alcatel-Lucent 7750 SR. Which of the following is FALSE?

Options:

A.

Each PLR signals a protection tunnel that avoids the downstream node.

B.

A single protection tunnel can protect all LSPs that go through the same hop.

C.

A link protection tunnel is signaled if a node protection tunnel cannot be established.

D.

Protection tunnels used in this LSP are also detour tunnels.

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Questions 184

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4A0-C01 Question 184

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?

Options:

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.

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Questions 185

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

Options:

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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Questions 186

An LSP is configured with a fully loose path and CSPF is not enabled. An LSR receives the first PATH message for this LSP. Which of the following is NOT performed by the LSR?

Options:

A.

The LSR regenerates and forwards a new PATH message.

B.

The LSR stores the PATH message in the PSB.

C.

The LSR forwards the PATH message based on the HOP object in the RSB.

D.

The LSR looks up the PATH message's destination IP address in the FIB.

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Questions 187

Which of the following about configuring an LSP path definition on an Alcatel-Lucent 7750 SR is FALSE?

Options:

A.

A path definition can have both loose and strict hops.

B.

A path definition can be configured with loose hops only.

C.

A path definition is configured on the head-end router only,

D.

A path definition is not required if CSPF is enabled on an LSP.

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Questions 188

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

Options:

A.

Tunnel Label

B.

VC Label

C.

Operational Control Word

D.

UNI

E.

NNI

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Questions 189

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4A0-C01 Question 189

An LDP tunnel is established on router R1 towards router R6. The link between routers R2 and R4 goes down. What will happen to the MPLS data traffic to router R6 IMMEDIATELY after the link goes down?

Options:

A.

MPLS data traffic will be discarded until the IGP finds a new next-hop to router R3.

B.

MPLS data traffic will be discarded unless the LDP tunnel has a standby secondary path.

C.

MPLS data traffic will not be discarded because router R1 received labels from both next-hops, routers R2 and R3.

D.

MPLS data traffic will not be discarded because of fast reroute capability on router R2.

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Questions 190

Which of the following statements are TRUE about configuring a distributed Epipe service? (Choose 2)

Options:

A.

The vc-id on the spoke-sdp must be explicitly configured.

B.

The vc-id on the mesh-sdp must be explicitly configured.

C.

The vc-id on the spoke-sdp can be configured to match the service id.

D.

The vc-id on the mesh-sdp can be configured to match the service id.

E.

The vc-id on the spoke-sdp does not have to be explicitly configured and will use the service id.

F.

The vc-id on the mesh-sdp does not have to be explicitly configured and will use the service id.

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Questions 191

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4A0-C01 Question 191

Both Path-1 and Path-2 are down. If Path-2 becomes available again, how does the headend router select the secondary LSP path?

Options:

A.

The router will switch to Path-2 because it is the first secondary path configured in the list.

B.

The router will not switch to Path-2 because the current path has the longest uptime.

C.

The router will switch to Path-2 because it is a more preferred path.

D.

The router will not switch to Path-2 because the router will not revert to another secondary path.

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Questions 192

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4A0-C01 Question 192

Which of the following about the bypass tunnel is FALSE?

Options:

A.

The router 10.10.10.1 is a PLR providing node protection for the router 10.10.10.3.

B.

One-to-one fast reroute protection is requested by an LSP.

C.

The bypass-link tunnel is used to avoid the link with the egress interface address 10.3.4.4.

D.

The bypass-node tunnel is used to avoid the next-hop downstream router 10.10.10.3.

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Questions 193

What causes an adjacency to change from down to two ways?

Options:

A.

When a link state update is received in response to a link state request.

B.

When a router receives a Hello packet that contains its own router ID in the neighbor list from a neighbor.

C.

When a router receives a database description packet from a neighbor.

D.

When a link state acknowledgement is received in response to a link state update.

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Questions 194

What are the ways the RID can be created on an Alcatel-Lucent 7750 SR router? (Choose three)

Options:

A.

From the last 32 bits of the chassis MAC address

B.

From the first 32 bits of the chassis MAC address

C.

The loopback IP address

D.

By using the command "config router ospf rid X.X.X.X"

E.

From the system IP address

F.

From the highest interface IP address

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Questions 195

What are the similarities between OSPF and IS-IS? Choose two.

Options:

A.

Metric is cost based

B.

Slow convergence

C.

Automatic summarization

D.

Support CIDR

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Questions 196

When configuring a filter, where should the most explicit entries be placed?

Options:

A.

At the bottom

B.

In the middle

C.

At the top

D.

It does not matter where they are placed.

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Questions 197

Which type of IS-IS router is summarization most likely to be configured on?

Options:

A.

L1 routers

B.

L2 routers

C.

L1/L2 routers

D.

L1 and L2 routers

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Questions 198

A router is configured with the command "configure router ecmp 4". There are two best paths to a given destination with an equal cost in the IGP. Which of the following best describes the handling of traffic to this destination?

Options:

A.

The router installs two routes for the destination with two different next hops. A hashing algorithm is used to distribute traffic over the two paths.

B.

The router installs two routes for the destination with two different next hops. Traffic is evenly distributed over the two paths.

C.

The router installs four routes for the destination with four different next hops. A hashing algorithm is used to distribute traffic over the four paths.

D.

The router installs four routes for the destination with four different next hops. Traffic is evenly distributed over the four paths.

E.

The router installs one route for the destination. Traffic is evenly distributed over the two paths.

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Questions 199

When IS-IS elects a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same?

Options:

A.

The system ID.

B.

The loopback address.

C.

The sequence number of the Hello packet.

D.

The device that first initiated communication becomes the DIS

E.

The highest interface MAC address.

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Questions 200

A static route is created using the command "static-route 0.0.0.0/0 next-hop 3.3.3.1". What command could be used to test the static route on an Alcatel-Lucent 7750 SR?

Options:

A.

Ping static 3.3.3.1

B.

Ping static 0.0.0.0/0

C.

Ping 3.3.3.1

D.

Ping 0.0.0.0

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Exam Code: 4A0-C01
Exam Name: Nokia NRS II Composite Exam
Last Update: Jul 21, 2024
Questions: 852

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