Nokia 4A0-255 Exam Questions Instant Access

Question 1

What is precision Time Protocol (PTP) designed for?

APrecise time measurements

BSynchronization of encryption entities

CShortest path discovery

DPacket-based timing distribution

Answer : B

Question 2

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

APower range

BOSNR margin

CMinimum attenuation

DSystem aging margin

Answer : A

Question 3

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 4

Refer to the exhibit.

Consider the above exhibit, which shows a WDM network map from EPT. A new trail at 10G needs to be created from Site1 to Site3. The design tool routes the trail through Site1 but the trail is evaluated as invalid due to insufficient OSNR margin. Among the following option, which is NOT effective for making the 10G trail valid?

AUse a FEC with a lower code rate

BUse 3R regeneration at Site2

CUse a DCM at Site 2
D, Use a Raman amplifier at Site2

Answer : A

Question 5

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 6

Consider the exhibit, where the two highest ports are OT line ports. Which of the following statements is correct?

AThe OCH protection is implemented.

BThe O-SNCP protection is implemented.

CThe E-SNCP protection is implemented.

DAn OPS is required upstream (left of the OT).

Answer : D

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 Advanced Optical Network Design 4A0-255 Exam Questions