Free Practice Questions for the Nokia Optical Network Design Expert 4A0-255 Exam (2026 Updated)

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

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

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

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

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

GMPLS is able to control OTN networks.

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

GMPLS is able to automatically provision the optical channels.

It supports more bits per symbol per polarization than 8QAM

It has the same Gbaud rate as 100G 8QAM.

Each symbol supported 2 bits per polarization.

The Gbaud rate is 50.

OUT refer to the section between two multiplexers passing through one or more amplifiers.

OUT refers to the section between two amplifiers.

OUT enables the multiplexing of OCH connections.

OUT enables FEC processing.

HDFEC injects less latency into the decoding process than SDFEC.

HDFEC provides a higher coding gain than SDEFC

HDFEC uses fewer thresholds than SDEFC.

HDFEC discards bits earlier in the decoding process than SDEFC.

Intrusions on fibers

Power injection one channel

Hacking of L1 encryption

Intrusions in the cryptographic keys

Efficient spectral utilization

Multi-layer network support

Government level certification

Administrative segregation

FWM is a linear impairment that produces crosstalk four adjacent wavelengths are used.

FWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.

FWM is a non-linear impairment resulting from varying velocities at different frequencies.

FWM is a linear impairment resulting from pulses broadening over ultra-long distances

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

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

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

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