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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)

B)

C)

D)

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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

A.

BER is the ratio of redundant bits to correct bits.

B.

BER is measured at both the transmitted and receiving ends.

C.

BER can be measured beforeafter the FEC decoding.

D.

BER can be accurately measured in a short period of time , for any rate.

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.

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?

A.

The throughput is halved.

B.

Throughput is doubled.

C.

The Throughput is the same,.

D.

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

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

A.

The OCH protection is implemented.

B.

The O-SNCP protection is implemented.

C.

The E-SNCP protection is implemented.

D.

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

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

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

Which of the following statements about GMPLS features is FALSE?

A.

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

B.

GMPLS is able to control OTN networks.

C.

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

D.

GMPLS is able to automatically provision the optical channels.

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

A.

Intrusions on fibers

B.

Power injection one channel

C.

Hacking of L1 encryption

D.

Intrusions in the cryptographic keys

Which ofthe following statements about Raman amplification is FALSE?

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

Which of the following statements about the management plane data Communications Network (DCN) is correct?

A.

The management plane DCN uses in-band communication.

B.

The management plane DCN can be connected to each NEs via OSS/OBS interface.

C.

The management plane DCN can be connected to each NEs directly.

D.

The management plane DCN enables direct communication between the NEs.