Alcatel-Lucent Multi Protocol Label Switching (4A0-103) Practice Test

Questions # 51:

LDP is enabled on both ends of a point-to-point link, but the "show router Idp status" command indicates that LDP is operationally down. The Oper Down Reason field shows the message "systemIpDown." What might cause this condition?

Options:

The LSP is in the administrative down state.

The router's router ID overlaps another.

The router's interfaces do not have LDP running.

The router's system interface requires an IP address

Questions # 52:

When a device receives a labeled packet, which of the following can occur?

Options:

The packet can only be forwarded as an unlabeled packet.

The packet can be forwarded as a labeled or unlabeled packet, depending on the received label value.

The packet can be forwarded as a labeled or unlabeled packet, depending on the destination IP address in the payload

The packet can only be forwarded as a labeled packet.

Questions # 53:

Which of the following LDP message categories is UDP-based?

Options:

Notification

Session

Discovery

Questions # 54:

Click on the exhibit button below.

Question # 54

Consider the output shown; what table is displayed?

Options:

RIB

FIB

LIB

LFIB

Questions # 55:

Which of the following timers can be adjusted to reduce the time a router waits between attempts to re-establish an LSP after it has failed?

Options:

Isp retry-timer

Isp retry-limit

mpls resignal-timer

rsvp refresh-time

router rsvp keep-multiplier

Questions # 56:

Router R3 signals an LSP, reserving 1Gbps bandwidth on a 10Gbps link. RSVP configuration limits reservable bandwidth to 20 percent on the egress interface. Which of the following statements is true?

Options:

The egress RSVP interface has 80 percent bandwidth unreserved.

LSPs can reserve an additional 9.9 Gbps bandwidth on this RSVP interface.

The head end reserves 100Mbps for the LSP.

The egress RSVP interface has 1Gbps bandwidth unreserved.

Questions # 57:

True or False? MPLS may use an existing data link layer header field to identify a label, instead of using a specific MPLS header

Options:

TRUE

FALSE

Questions # 58:

Which of the following is defined by the following statement? All label mappings received from all peer LSRs are saved.

Options:

Conservative label retention

Liberal label retention.

Downstream on demand.

Downstream unsolicited.

Questions # 59:

Click on the exhibit button below.

Question # 59

If the four LSPs shown use the shared-explicit reservation style, how much bandwidth does CSPF request across a single 1Gbps link?

Questions # 60:

What is the common usage of the MPLS EXP bits?

Options:

Each implementation can use them as they see fit.

They are used to carry the Ethertype value.

They are used to carry the TTL value.

They are used to carry QoS classification.

They are used to carry fragmentation flag information

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