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質問 1：
Which of the following statements about the contentionless feature on a CDC-F node is TRUE?
A. It represents the ability to support the Fixed Grid standard.
B. It represents the ability to drop any lambda from any Add/Drop block port.
C. It represents the ability to reroute lambdas to any direction.
D. It represents the ability to drop the same wavelength from different degrees.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
Which of the following is NOT a troubleshooting functionality of the Wavelength Tracker?
A. Detecting unexpected or missing channels.
B. Testing a node's internal fiber connectivity before service provisioning.
C. Tracing a service along an optical path.
D. Performing channel power monitoring.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 3：
WDM allows transmission systems to:
A. Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission
B. Allocate different signals to different time slots
C. Increase the bit rate of each client signal by spreading it over multiple wavelengths
D. Transport multiple signals transparently, onto several wavelengths, all together over one single fiber
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
What is an optical switch?
A. A device that selectively transfers an optical signal from one port to another.
B. A device that converts optical signal to electrical to allow switching through the electrical matrix, and then again to optical towards the next card (and versa).
C. A device that selectively transfers an optical ODU frame from one port to another.
D. A device that groups multiple lambdas in one multiplexed signal.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 5：
Which of the following are the main reasons for fiber attenuation?
A. Small channel spacing
B. Refraction and reflection
C. Scattering and absorption
D. Chromatic dispersion (CD) and polarization mode dispersion
正解：C
質問 6：
What is the definition of OSNR?
A. The OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.
B. The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.
C. 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.
D. The OSNR is the ratio between the optical output signal power and the optical input signal power of the device being analyzed.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
Which of the following statements about the contentionless feature on a CDC-F node is TRUE?
A. It represents the ability to support the Fixed Grid standard.
B. It represents the ability to drop any lambda from any Add/Drop block port.
C. It represents the ability to reroute lambdas to any direction.
D. It represents the ability to drop the same wavelength from different degrees.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
Which of the following is NOT a troubleshooting functionality of the Wavelength Tracker?
A. Detecting unexpected or missing channels.
B. Testing a node's internal fiber connectivity before service provisioning.
C. Tracing a service along an optical path.
D. Performing channel power monitoring.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 3：
WDM allows transmission systems to:
A. Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission
B. Allocate different signals to different time slots
C. Increase the bit rate of each client signal by spreading it over multiple wavelengths
D. Transport multiple signals transparently, onto several wavelengths, all together over one single fiber
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
What is an optical switch?
A. A device that selectively transfers an optical signal from one port to another.
B. A device that converts optical signal to electrical to allow switching through the electrical matrix, and then again to optical towards the next card (and versa).
C. A device that selectively transfers an optical ODU frame from one port to another.
D. A device that groups multiple lambdas in one multiplexed signal.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 5：
Which of the following are the main reasons for fiber attenuation?
A. Small channel spacing
B. Refraction and reflection
C. Scattering and absorption
D. Chromatic dispersion (CD) and polarization mode dispersion
正解：C
質問 6：
What is the definition of OSNR?
A. The OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.
B. The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.
C. 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.
D. The OSNR is the ratio between the optical output signal power and the optical input signal power of the device being analyzed.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
Matsushima -
Pass4Testの4A0-205問題集は有難い商品です。一度試験に合格しました。今後、引き続く参考書を利用します。