Nest 0 Cart
Nest Account
Popular Exams
All Categories...
Nest
Nest 0
Contact
Log In / Sign Up
Copyright 2024 © store. All rights reserved.
Home Nokia 4A0-205

Nokia 4A0-205 Exam Practice Questions (P. 1)

  • Full Access (68 questions)
  • Six months of Premium Access
  • Access to one million comments
  • Seamless ChatGPT Integration
  • Ability to download PDF files
  • Anki Flashcard files for revision
  • No Captcha & No AdSense
  • Advanced Exam Configuration
Get Contributor Access
Question #1
What is the definition of OSNR?
  1. A
    The OSNR is defined as the ratio between the transmitted optical power and the received optical power over 1 km of fiber, including both signal and optical noise.
  2. B
    The OSNR is the ratio between the optical output signal power and the optical input signal power of the device being analyzed.
  3. C
    The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.
  4. D
    The OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.

Correct Answer:
D

Question #2
Which of the following are the main reasons for fiber attenuation?
  1. A
    Refraction and reflection
  2. B
    Scattering and absorption
  3. C
    Chromatic dispersion (CD) and polarization mode dispersion (PMD)
  4. D
    Small channel spacing

Correct Answer:
B

Question #3
What is the meaning of first, second, and third window in the optical fiber propagation context?
  1. A
    These windows correspond to three different minimum and maximum optical power levels used for optical transmission.
  2. B
    These windows are three different wavelength intervals where the WDM optical transmission occurs.
  3. C
    These three windows are three different angles of incidence of the light injected by the laser into the fiber.
  4. D
    Different optical transmission windows correspond to different safety requirements and rules for the related lasers operating with these windows.

Correct Answer:
B

Question #4
In which window(s) does the attenuation reach its minimum peak?
  1. A
    First window (850 nm)
  2. B
    Second window (1300 nm)
  3. C
    Third window (1550 nm)
  4. D
    Both first and second windows

Correct Answer:
D

Question #5
Which of the following statements is true about chromatic dispersion (CD)?
  1. A
    Different channels have different bandwidth and this causes different CD performances.
  2. B
    The fiber attenuation changes along the fiber, and when the light crosses these differences the CD takes place.
  3. C
    Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed.
  4. D
    The fiber attenuation introduces inter-channel interference.

Correct Answer:
C

Next Questions

All Pages