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 4A0-255 Dumps with Practice Exam Questions Answers

Questions: 40 questions

Last Update: Dec 21, 2024

Nokia Certification Exam 4A0-255 has been designed to measure your skills in handling the technical tasks mentioned in the certification syllabus

4A0-255 Exam Last Week Results!

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94%

Average Score In Real
Exam At Testing Centre

90%

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4A0-255 Questions and Answers

Question # 1

Which of the following best describes Flexgrid?

A.

Flexgrid is based on flexible amplification stages

B.

Flexgrid uses flexible guardband that can take any spacing.

C.

Flexgrid is defined on a frequency grid spacing based on ,multiples of 12.5 GHz.

D.

Flexgrid allows channel bandwidth central frequencies and guardband to take any value in the spectrum range.

Question # 2

What isguardband required for?

A.

To reduce the impact of chromatic dispersion.

B.

To properly use the available bandwidth of the fibers.

C.

To enable each channel to support a higher modulation format.

D.

To reduce non-linear impairments between coherent and non-coherent channels.

Question # 3

Consider the exhibit shows the standard 8-step network design process. Suppose that you have used this process to design a Green filed network, which has been commissioned and is in operation. The customer now requests an extension to the network to accommodate more steps and traffic. Which steps are not required when designing such an extension?

A.

Step 2(analyze Traffic Demand and Step 4 ( Define Network Topology)

B.

Step (Define Network Architecture ) and Step 5( Evaluate Traffic Demandon Architecture)

C.

Step2 (Analyze Available) and Step 8 (Analyze Cost).

D.

The steps to befollowed depended on the requirement of the network extension.

Question # 4

Consider the exhibit that shows a link power budget diagram. Which of the following is represented at location 2?

A.

Power range

B.

OSNR margin

C.

Minimum attenuation

D.

System aging margin

Question # 5

Consider the exhibit. Which type of survivability mechanism is selected for this trail?

A.

Source-based restoration.

B.

Guaranteed restoration

C.

Optical sub-network connection protection

D.

Protection and restoration combined