Pass the Nokia Optical Network Design Expert 4A0-255 Questions and answers with CertsForce

Viewing page 1 out of 2 pages
Viewing questions 1-10 out of questions
Questions # 1:

Consider the exhibit that shows the OTN frame structure . Which of the following sets of label is correct?

Question # 1

Options:

A.

OUT: B: ODU: C: OPU: D: OPU


B.

OUT: B: ODU: C: OPU: D: OCH


C.

OPU: B: OTU: C: ODU: D: OPU


D.

ODU: B: OYU: C: OPU: D: OPU


Questions # 2:

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?

Question # 2

Options:

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.


Questions # 3:

Suppose there is a 40 Gbit/s signal which has a symbol rate of Gbaud/s. Which modulation format is being used?

Options:

A.

QPSK


B.

BPSK


C.

4QAM


D.

DP-QPSK


Questions # 4:

Which of the following can be detected through power monitoring with an Optical Time Domain Reflect meter?

Options:

A.

Intrusions on fibers


B.

Power injection one channel


C.

Hacking of L1 encryption


D.

Intrusions in the cryptographic keys


Questions # 5:

Which ofthe following statements about Raman amplification is FALSE?

Options:

A.

Amplification occurs along the fiber


B.

Chromatic dispersion within the fiber is increased.


C.

Flat gain can be achieved in any transmission band.


D.

OSNR is improved compared to EDFAs permitting lingers spans


Questions # 6:

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)

Question # 6

B)

Question # 6

C)

Question # 6

D)

Question # 6

Options:

A.

Option A


B.

Option B


C.

Option C


D.

Option D


Questions # 7:

Question # 7

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?

Options:

A.

Use a FEC with a lower code rate


B.

Use 3R regeneration at Site2


C.

Use a DCM at Site 2

D, Use a Raman amplifier at Site2


Questions # 8:

Consider an OTN-based network controlled by GMPLS. Which of the following statements is correct?

Options:

A.

An OCH LSP can be routed through an ODU LSP.


B.

An ODU LSP can be routed through an OCH LSP.


C.

An ODU LSP is routed between two photonic layer nodes.


D.

The routing of the individual ODU frames is based on their label


Questions # 9:

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

Question # 9

Options:

A.

Source-based restoration.


B.

Guaranteed restoration


C.

Optical sub-network connection protection


D.

Protection and restoration combined


Questions # 10:

Consider the exhibit showing the schematic for an NE ina deployed optical network. Thetraffic growth forecast is for the use of 40 channels in 3 years. The customer needs to reduce thespace for the shelf. Among the following, which additional input is NOT necessary to meet these specific requirements?

Question # 10

Options:

A.

Rack size


B.

Expected traffic added-dropped at the site


C.

Mean time to repair for the equipment


D.

Power supply


Viewing page 1 out of 2 pages
Viewing questions 1-10 out of questions