Nokia 4A0-255 Exam Practice Test Instant Access

Question 1

Suppose that for a given number of buffer credits and for an given average FC frame size, the maximum FC link length is 50 km.

If the average FC frame size is doubled, which of the following is correct?

AThe throughput is halved.

BThroughput is doubled.

CThe Throughput is the same,.

DThe buffer credits need to be adjusted to achieve the maximum throughput.

Answer : D

Question 2

Consider the exhibit. Which of the following NE architectures is represented?

ATOADm

B(Classic) ROADM

CC-F ROADM

DCDC-F ROADm

Answer : A

Question 3

Which of the following statements about GMPLS features is FALSE?

AGMPLS is able to manage the optical network through the DCN.

BGMPLS is able to control OTN networks.

CGMPLS is able to compute the routing of the optical channels.

DGMPLS is able to automatically provision the optical channels.

Answer : C

Question 4

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?

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

BStep (Define Network Architecture ) and Step 5( Evaluate Traffic Demand on Architecture)

CStep2 (Analyze Available) and Step 8 (Analyze Cost).

DThe steps to be followed depended on the requirement of the network extension.

Answer : C

Question 5

Consider the exhibit that shows a network design in EPT.

Seven segments are defined segment lengths are shown in the list below the network map.

3 services are defined each service carries a 10G signal, is protected by diverse path and is router by shorted distance.

Which of the following links is the heavily loaded?

ASite A - Site B

BSite C -- Site D

CSite E - Site F

DAll three links have the same load

Answer : D

Question 6

Which of the following is NOT an advantage of super-channels?

AImproved spectral efficiency

BSimplified management of the carriers

CNarrower spacing between carries of the super-channel

DImpairment-free transmission

Answer : C

Question 7

What is guardband required for?

ATo reduce the impact of chromatic dispersion.

BTo properly use the available bandwidth of the fibers.

CTo enable each channel to support a higher modulation format.

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

Answer : D

Nokia 4A0-255 Nokia Advanced Optical Network Design Exam Practice Test