4A0-103 Online Practice Questions and Answers

Which of the following is described by the following statement? An LSR propagates a label mapping only for a FEC for which it has a label mapping for the FEC next-hop.

A. Independent control mode

B. Ordered control mode

C. Liberal label retention

D. Conservative label retention

E. Downstream on demand.

How many bits of the MPLS header are used for the label field?

A. 16

B. 20

C. 24

D. 25

E. 32

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?

A. The LSP is in the administrative down state.

B. The router's router ID overlaps another.

C. The router's interfaces do not have LDP running.

D. The router's system interface requires an IP address

Which of the following are features of RSVP-TE? Choose three answers.

A. It supports IGP-based LSPs.

B. It supports constrained path LSPs.

C. It does not support loose explicit path LSPs.

D. It is recommended for use in Traffic Engineering applications.

E. It cannot be used with facility backup fast reroute.

Which of the following regarding the MPLS SWAP label operation is TRUE?

A. The inner label will be exchanged with the MPLS outer label.

B. The inner label will be exchanged for a new label.

C. The outer label will be exchanged for a new label.

D. All labels will be exchanged for one new label.

E. All labels will be exchanged for an equal number of new labels.

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.

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?

A. 10 Gbps

B. 7 Gbps

C. 3 Gbps

D. 2 Gbps

Which of the following devices assumes the active role during the establishment of an LDP session?

A. The peer with the higher physical address.

B. The peer with the higher transport address.

C. The peer with the lower physical address.

D. The peer with the lower transport address.

E. The peer that generated the first Hello message.

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

If an LSP needs to use an admin group, which of the following configurations is NOT required on the Alcatel-Lucent 7750 SR?

A. Assign an admin group to a MPLS interface.

B. Configure CSPF on the LSP.

C. Configure at least one strict hop on the LSP path.

D. Configure an "include" or "exclude" statement on the LSP path.