4A0-100 Alcatel-Lucent Exam Questions and Free Practice Test

Question 25

What problem was Spanning Tree Protocol (STP) primarily designed to solve?

A. Inability to perform switch to switch redundancy using multiple connections at Layer 2.

B. Missing protocol field in Ethernet II required to identify redundancy protocols at Layer 2.

C. Missing packet sequencing in Layer 2 Ethernet required to re-order packets on arriva

D. Inability to forward multicast frames without a routing protoco

Correct Answer:A

Question 26

If a 4-port LAG is configured with the option of 'port-threshold 2' and 'action down' what will
happen if the total operational links in the LAG is 2?

A. If dynamic-cost is enabled it will adjust the cost for routing protocols such as OSP

B. If dynamic-cost is not enabled it will adjust the cost for routing protocols such as OSPF by dividing the link bandwidth by 2.

C. The LAG will be changed to an operational state of 'down'.

D. The LAG will function with only 2 port

E. There will be no change to the routing metri

Correct Answer:C

Question 27

Which of the parameters in Hello messages exchanged between two OSPF neighbors must be the same to keep the adjacency alive in OSPF? (Choose four.)

A. Interface MT

B. Area I

C. Authentication passwor

D. Hello interva

E. Dead interva

F. Router priorit

Correct Answer:BCDE

Question 28

What operation is performed by an LSR when it receives an MPLS labeled packet?

A. The LSR refers to its routing table and forwards the packet to the next LSR or LER without altering the MPLS labe

B. The LSR refers to its MPLS label table, swaps the label and forwards the packet to the next LSR or LE

C. The LSR refers to its MPLS label table forwards the packet to the next LSR or LER without altering the MPLS labe

D. The LSR refers to its MPLS label table, pops the label and forwards the packet to the next IP route

Correct Answer:B

Question 29

Which organization eventually became the standards body for IP and related protocols?

A. IEEE

B. IETF

C. NSFNET

D. ITU-T

E. APNIC

Correct Answer:B

Question 30

Why does UDP have less overhead than TCP?

A. UDP has less overhead because it is only used for transmission of small amounts of dat

B. UDP has less overhead then TCP because there is no checksum field in UD

C. UDP overhead is the same as TCP because it uses the same fields in the heade

D. UDP has less overhead because there is no requirement for acknowledgment or retransmissio

Correct Answer:D

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