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4A0-105 Nokia Virtual Private LAN Services Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-105 Nokia Virtual Private LAN Services 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 156 questions

Which of the following describes the setting of the l-SID on the Nokia 7750 SR?

A.

The I-SID is set to 0 by default and is only used for interop purposes. The receiving PE uses the service label to determine the I-VPLS.

B.

There is no default value. The I-SID must always be explicitly configured

C.

The I-SID is set to the service-id, unless the service-id is larger than a 24 bit value. In this case the I-SID must be explicitly configured.

D.

The I-SID is always set to the service-id by default.

Click on the exhibit below.

Which ports will become root ports? (Choose 3)

A.

Bridge B 1/1/3

B.

Bridge B 1/1/2

C.

Bridge C 1/1/2

D.

Bridge C 2/1/1

E.

Bridge D 1/1/1

F.

Bridge D 1/1/3

G.

Bridge E 1/1/1

What must be enabled in order to prevent a loop within a LAG?

A.

RSTP

B.

Dynamic-cost

C.

LACP active

D.

Nothing, There are no loops in LAGs

Click on the exhibit below.

Study the network diagram. Which of the following configurations is correct for user VPLS 100 on PE4?

A.

Option A

B.

Option B

C.

Option B

D.

Option C

E.

Option E

RSTP blocks a spoke-sdp using a management VPLS. Is traffic affected on an ES using the same transport SDP?

A.

Yes

B.

No

Which function of the IEEE 802.1 ag is used for responding to CFM messages but not originating them?

A.

MEP

B.

MAP

C.

MIP

D.

MUP

Click on the exhibit below.

If the device connected to PE-A in Metro A sends a frame to PE-A that requires replication within the VPLS which devices is PE-A responsible for replicating the frame to?

A.

PE-A must replicate the frame to all devices participating in the VPLS

B.

PE-A must replicate the frame to all PEs within Metro A

C.

PE-A must replicate the frame to all devices in the Metro A

D.

All of the above

Which of the following SAP encapsulations supports only one service on a port?

A.

Dot1Q

B.

Null

C.

Q-in-Q

D.

Ipcp

E.

BCP

What is the maximum number of VLANs supported on a traditional Layer 2 switch?

A.

4094

B.

8190

C.

32768

D.

131071

To reduce the amount of flooding between PE devices which of the following steps should be taken?

A.

Configure the local age timer to be larger.

B.

Configure the local age timer to be lower.

C.

Configure the remote age timer to be larger.

D.

Configure the remote age to be lower.

H-VPLS solves the data-plane and control-plane problems with the exception of one issue. What is the concern that H-VPLS does not solve?

A.

Increased LSP count.

B.

Number of TLDP sessions.

C.

The amount of network touches.

D.

FDB consumption.

E.

Increased bandwidth and replication.

How is it possible for multiple services to be carried over the same MPLS LSPs?

A.

Multiple SDPs must be configured and bound to the LSPs for this to be possible.

B.

It is not possible to carry multiple services over the same MPLS LSPs.

C.

A vc-label is signaled per service.

D.

The vc-id is part of the data plane and maps the traffic to the appropriate service.

An l-VPLS can be associated with many B-VPLS services.

A.

TRUE

B.

FALSE

Which of the following is a true statement?

A.

The lower the age-time, the greater the amount of flooding

B.

The higher the age-time, the greater the amount of flooding.

C.

The lower the age-time, the lower the amount of flooding.

D.

There is no relationship between the age-time and the amount of flooding.

Which of the following needs to be considered when designing Ethernet networks with redundancy?

A.

Processing the TTL takes extra time.

B.

MAC learning rate is doubled.

C.

FDB size is doubled.

D.

Requires a protocol to remove loops.

Click on the exhibit below.

Based on the following configuration which VLANs will be managed by the management VPLS?

A.

VLANs 1-4094

B.

VLAN 0

C.

There is not enough information provided

D.

None, this is an invalid configuration

In RSTP, how is the root bridge selected?

A.

The switch with the highest bridge-id is selected as root.

B.

The switch with the lowest bridge-id is selected as root.

C.

The switch with the highest MAC address is selected as root

D.

The switch with the lowest MAC address is selected as root.

After the "disable-learning" command has been executed at the VPLS level, a new client device originates a frame. What is the result?

A.

If the MAC address of this new client device does not reach the upper limit of the configured total number of MAC addresses allowed in the VPLS forwarding database, then the new MAC address will be stored.

B.

The new source MAC addresses will not be entered in the VPLS service forwarding database.

C.

New local source MAC addresses will not be entered in the VPLS service forwarding database, but new remote MAC addresses would continue to be entered.

D.

New remote source MAC addresses will not be entered in the VPLS services forwarding database, but new local MAC addresses would continue to be entered.

Click on the exhibit below.

Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation. How must PE-A be configured?

A.

The port that the SAP belongs to must have the correct ether type configured.

B.

The SAP must be configured with the right VLAN tag.

C.

The SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified.

D.

All of the above.

A LAG is configured with LACP passive mode enabled. When will LACP packets be sent?

A.

On initialization and then every hello-interval.

B.

Only after receiving LACP packets.

C.

Every 1 second.

D.

Never.

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Total 156 questions
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