Free Nokia 4A0-255 Exam Questions

Become Nokia Certified with updated 4A0-255 exam questions and correct answers

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Total 40 Questions | Updated On: Nov 11, 2024

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Question 1

Consider the exhibit that shows a network with a full mesh fiber structure. Link weights indicate the cost. Future services can be requested between any node pair.

Which of the following topology represents a minimum cost design (minimum overall fiber cost) where link failure survivability is ensured?

A :

Other-Image-4db137982-95ea-4bc7-bcd4-5521fcf93e52

B :

Other-Image-6db137982-95ea-4bc7-bcd4-5521fcf93e52

C :

Other-Image-8db137982-95ea-4bc7-bcd4-5521fcf93e52

D :

Other-Image-10db137982-95ea-4bc7-bcd4-5521fcf93e52

Answer: B

Question 2

Which of the following about the Optical channel Transport Unit (OUT0 in ONT network is correct?

A : T refer to the section between two multiplexers passing through one or more amplifiers.

B : T refers to the section between two amplifiers.

C : T enables the multiplexing of OCH connections.

D : T enables FEC processing.

Answer: A

Question 3

Which if the following statements about Recovery Time Objective (RTO) and Recovery Point Object Point Objective (PRO) is FALSE?

A : O/PRO define business continually requirements for data center.

B : O/PRO defined the acceptable amount of data (in bits) that can be lost after a failure.

C : ta center mirroring has the most critical level of RTO.RPO among DC applications.

D : er data centers have stricter RTO/PRO requirements than Tire .

Answer: B

Question 4

Which of the following statements about Bit Error Rate (BER) is correct?

A : R is the ratio of redundant bits to correct bits.

B : R is measured at both the transmitted and receiving ends.

C : R can be measured before after the FEC decoding.

D : R can be accurately measured in a short period of time , for any rate.

Answer: B

Page: 1 / 8

Total 40 Questions | Updated On: Nov 11, 2024

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