Question 1
A network must carry multiple optical channels over one fibre by assigning different wavelengths. Which technology provides this capability?
Show answer & explanation
Correct answer: B - WDM
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These 10 free CONA questions are organized by exam domain, so you can see how each part of the Certified Optical Network Associate blueprint is tested. Reveal the answer and explanation under each question.
A network must carry multiple optical channels over one fibre by assigning different wavelengths. Which technology provides this capability?
Correct answer: B - WDM
A fibre route develops extra attenuation after installation with a tight bend. Which impairment is most likely?
Correct answer: C - Bend loss
Before mating optical connectors in a high-performance link, what should the engineer do first?
Correct answer: B - Inspect and clean connector end faces
A link passes continuity testing but performs poorly. What is the best next approach?
Correct answer: A - Analyse detailed test results
A fibre link has a transmitter output of +2 dBm, receiver sensitivity of -16 dBm, and total measured loss of 12 dB. What is the best conclusion?
Correct answer: A - The link has a 6 dB positive margin
Which equipment family is used to extend optical reach by increasing signal strength?
Correct answer: A - Optical amplifiers
When selecting a transceiver, which information is most relevant?
Correct answer: B - Optical parameters and transmission requirements
Pulse spreading caused by different wavelengths travelling at different velocities is known as:
Correct answer: A - Chromatic dispersion
A calculation shows chromatic dispersion exceeds the acceptable limit. Which solution area should be considered?
Correct answer: B - Dispersion compensation
Which technology can selectively add or drop wavelengths in a photonic network?
Correct answer: B - ROADM
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