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Nokia 4A0-103 - Alcatel-Lucent Multi Protocol Label Switching

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Total 249 questions

Which of the following is a characteristic of LDP Hello messages?

A.

They are multicast to the All Hosts address.

B.

They are broadcast to the subnet broadcast address.

C.

They are multicast to the All Routers address.

D.

They are broadcast or multicast, depending on the physical media.

Which of the following about LDP sessions is TRUE?

A.

Frame mode requires multiple sessions between peers.

B.

The lower transport address initiates the session.

C.

Established LDP sessions run over a TCP connection.

D.

An LDP session is established immediately after Init messages are exchanged between peers.

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.

Which of the following is NOT an application of MPLS?

A.

Enabling VPNs

B.

Enabling traffic engineering

C.

Enabling network security

D.

Enhancing network resiliency

Which of the following devices inspects the MPLS header in the received packet, and exchanges it for a new MPLS header?

A.

iLER

B.

LER

C.

LSR

D.

PE

E.

eLER

Fill in the blanks: A ________device has all interfaces inside the provider domain, and a _______ device has at least one interface outside the provider domain.

A.

PE, P

B.

P, PE

C.

PE, CE

D.

CE, PE

E.

CE, P

If an Alcatel-Lucent 7750 SR is an iLER operating in pipe mode, which of the following regarding the TC field (EXP bits) is TRUE?

A.

The TC field is set based on the value of the DSCP field inside the customer packet.

B.

The TC field is set to a specific value via explicit administrative configuration.

C.

The TC field is set to a system generated random number.

D.

The TC field is set by the eLER.

Click on the exhibit.

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?

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.

Which of the following about the Link LDP discovery process on the Alcatel-Lucent 7750 SR is FALSE?

A.

LDP Hello messages are sent over TCP.

B.

LDP Hello messages are sent to the All Routers address 224.0.0.2.

C.

LDP Hello messages are exchanged between all directly connected LDP enabled routers.

D.

Each LDP enabled router must have its own unique system IP address.

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.