4A0-103 Alcatel-Lucent Multiprotocol Label Switching (Exam 8)

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What is the purpose of a T-LDP session?

What is the purpose of a T-LDP session?

It allows link LDP to be configured on the edge devices only.

It is used to signal the service labels in the provider core.

It is used to signal the transport labels in the provider core.

It allows selective control over which devices are configured for LDP.
Which of the following about LDP sessions is TRUE?

Which of the following about LDP sessions is TRUE?

Frame mode requires multiple sessions between peers.

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

The lower transport address initiates the session.

Established LDP sessions run over a TCP connection.
Click on the exhibit.After the Isp-ping command is executed, which of the followin...

Click on the exhibit.
After the Isp-ping command is executed, which of the following best describe the router's action?

MPLS Echo Request packets are sent unlabeled to the prefix 192.10.1.2.

MPLS Echo Request packets are sent over TCP.

MPLS Echo Request packets are sent within the LDP tunnel that are signaled for 192.10.1.2.

MPLS Echo Request packets are sent within the RSVP-TE tunnel that are signaled for 192.10.1.2.
Click on the exhibit.When router R1 forwards a PATH message to router R2, which of...

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?

The options field is set to router alert.

The HOP object includes R2's system address.

The source address is R1's egress interface address.

The destination address is R2's ingress interface address.
Click on the exhibit.This LSP terminates on a system IP address. What is the syste...

Click on the exhibit.

This LSP terminates on a system IP address. What is the system address of the destination node?

10.32.1.2

10.1.2.2

10.1.4.78

10.48.1.1
What are the default settings for RSVP-TE on the Alcatel-Lucent 7750 SR?

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

Per-interface label space, liberal retention mode

Per-platform label space, conservative retention mode

Per-platform label space; liberal retention mode

Per-interface label space, conservative retention mode
Click on the exhibit.Which of the following is FALSE?

Click on the exhibit.

Which of the following is FALSE?

The Isp-ping tool is used to perform a unidirectional LSP test.

The router can reach the far-end of the LSP through an LDP tunnel.

The router 10.10.10.2 is the egress router of the LSP.

The router can reach the far-end of the LSP through an RSVP-TE tunnel.
What labels are encapsulated in the tunnels used by a 6PE deployment?

What labels are encapsulated in the tunnels used by a 6PE deployment?

The inner label is the IPv4 Explicit Null. The outer label is the MPLS transport label,

The inner label is an MPLS transport label. The outer label is the IPv6 Explicit Null.

The inner label is an MPLS transport label. The outer label is the IPv4 Explicit Null.

The inner label is the IPv6 Explicit Null. The outer label is an MPLS transport label.
Which of the following about an ERO in an RSVP PATH message is FALSE?

Which of the following about an ERO in an RSVP PATH message is FALSE?

ERO is used by downstream routers to determine the next-hop for the LSP.

Each downstream router updates information inside the ERO.

ERO contains label information used to signal an LSP path.

ERO is not always present in the PATH message.
Which of the following about Type 10 opaque LSAs is TRUE?

Which of the following about Type 10 opaque LSAs is TRUE?

Type 10 opaque LSAs are supported by IS-IS.

Type 10 opaque LSAs are used for traffic engineering support.

Type 10 opaque LSAs are flooded to all areas of the routing domain.

Type 10 opaque LSAs are stored in an LSDB.
Which of the following about MPLS shortcuts for IGP on an Alcatel-Lucent 7750 SR i...

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

An IGP route takes priority over a transport tunnel.

Multiple MPLS tunnels can be installed in the FIB.

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

MPLS tunnels can be used to resolve the prefixes learned via IGP.
Initially, all ports on an Alcatel-Lucent 7750 SR have 10Gbps bandwidth. RSVP conf...

Initially, all ports on an Alcatel-Lucent 7750 SR have 10Gbps bandwidth. RSVP configuration limits
reservable bandwidth to 30 percent on all interfaces. An LSP is signaled reserving 1 Gbps bandwidth. How
much unreserved bandwidth is left on the interface?

10 Gbps

2 Gbps

7 Gbps

3 Gbps
How does a DMP inform the downstream routers that it has merged detour tunnels?

How does a DMP inform the downstream routers that it has merged detour tunnels?

The DMP sends the DMP_Object in each detour's PATH messages.

The DMP sends a single PATH message containing the merged DETOUR_Objects.

The DMP summarizes PATH messages, giving each detour its own MSGJD.

The DMP identifies itself as the previous hop in each detour's PATH message.
Click on the exhibit.The path of a fast reroute protected LSP is R1-R2-R3. Which o...

Click on the exhibit.
The path of a fast reroute protected LSP is R1-R2-R3. Which of the following about the protected LSP path
is TRUE?

All routers along the path, R1, R2, and R3 can be PLRs.

Router R1 is the LSP head-end and can be a PLR.

If the R1-R2 link fails, router R4 becomes an MP.

If the R2-R3 link fails, router R3 becomes a PLR.
Click on the exhibit.If the primary path fails, which backup LSP path will the hea...

Click on the exhibit.
If the primary path fails, which backup LSP path will the head-end router pick first?

The Standby with the highest next-hop IP.

The Standby with the lowest next-hop IP.

The first Standby in the list.

The Standby with the longest uptime.
Which of the following about Fast Reroute link protection tunnels is FALSE?

Which of the following about Fast Reroute link protection tunnels is FALSE?

Link protection tunnels are established if a router is unable to establish node protection tunnels.

Link protection tunnels detour around a failed next downstream router.

Link protection tunnels are only requested for a primary LSP path.

Link protection tunnels can be created for both one-to-one or facility Fast Reroute.
An LSP is configured with one-to-one FRR and node protection on a Alcatel-Lucent 7...

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

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

Protection tunnels used in this LSP are also detour tunnels.

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

A link protection tunnel is signaled if a node protection tunnel cannot be established.
Click on the exhibit.A fully loose LSP "toR6" is configured. All links have the sa...

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?

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

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

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

CSPF must be enabled for this LSP to attempt to find a better path.
Click on the exhibit.An LDP tunnel is established on router R1 towards router R6. ...

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?

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

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

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

MPLS data traffic will not be discarded because router R1 received labels from both next- hops, routers
R2 and R3.
Fill in the blanks: A ________device has all interfaces inside the provider domain...

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.

PE, P

CE, P

CE, PE

P, PE

PE, CE

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Aug. 24, 2016, 5:32 a.m.

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