Alcatel-Lucent Multiprotocol Label Switching
Answers, Braindumps (4A0-103)
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Q NO:-1 hich factor is a primary cause of IP hyper-aggregation?
A. IP routing protocols do not always select the best
route to a destination
B. IP routing protocols always select multiple routes
to a destination
C. IP routing protocols do not make use all available
network attributes to select a path
D. Improper network design results in limited network
hich of the following statements are true? Choose all
A. Selected labels from the FIB are populated to the
B. Selected labels from the LIB are populated to the
C. Selected routes from the RIB are populated to the
D. Selected routes from the FIB are populated to the
E. All labels from the LIB are populated to the LFIB
Answer: B, C
hen a device receives a labeled packet which of the
following can occur?
A. The packet may only be forwarded as an unlabeled
B. The packet may be forwarded as a labeled or unlabeled
packet depending on the received label value
C. The packet may be forwarded as a labeled or unlabeled
packet depending on whether there is a route to the
destination in the FIB
D. The packet may only be forwarded as a labeled packet
Q NO:-4 What is the significance of receiving a packet
with the bottom MPLS label S bit is set to 1?
A. This condition results in forwarding based on the
next packet header
B. This condition indicates that this label is the bottom
of the MPLS label stack
C. This condition indicates that this label is the top
of the MPLS label stack
D. Any LSR receiving an S bit set to 1 must discard
Which of the following statements is true regarding
the control driven label distribution model?
A. Label bindings are formed before the arrival of any
B. Label bindings are formed upon the arrival of user
C. Label bindings are formed manually
D. Control over label bindings is the responsibility
of the IGP
True or False? MPLS may use an existing data link layer
header field to identify the label, instead of using
a specific MPLS header.
An MPLS router may originate a label mapping for a FEC
under which of the following conditions? Choose 3 answers.
A. Only when the MPLS router is configured to use downsteam
on demand mode.
B. When the next-hop is external to the MPLS domain
C. When the FEC label mapping is statically configured
D. As soon as the FEC is removed from the MPLS router
FIB.As soon as the FEC is removed from the MPLS router?
E. When the FEC is a directly connected interface
Answer: B, C, E