MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Determine length of the fiber if attenuation is 5dB/km, splice loss is 2 dB/km, connector loss at source and detector is 3.5 and 2.5. |
| A. | 5 km |
| B. | 4 km |
| C. | 3 km |
| D. | 8 km |
| Answer» C. 3 km | |
| 2. |
Determine total channel loss if connector loss at source and detector is 3.5 and 2.5 dB and attenuation of 5 dB/km. |
| A. | 34 dB |
| B. | 35 dB |
| C. | 36 dB |
| D. | 38 dB |
| Answer» B. 35 dB | |
| 3. |
Determine wavelength of incident optical power if zm=864, incident optical power is -60.7 dB, BT=1 * 107. |
| A. | 1 s |
| B. | 2 s |
| C. | 3 s |
| D. | 4 s |
| Answer» B. 2 s | |
| 4. |
Determine incident optical power if zm=864, wavelength = 1 m. |
| A. | -85 dBm |
| B. | -80 dBm |
| C. | -69.7 dBm |
| D. | -60.7 dBm |
| Answer» E. | |
| 5. |
Compute average number of photons incident at receiver in APD if quantum efficiency is 80%, F (M) = 4, SNR = 144. |
| A. | 866 |
| B. | 865 |
| C. | 864 |
| D. | 867 |
| Answer» D. 867 | |
| 6. |
Sampling rate for each speech channel on 32-channel PCM is 8 KHz each encoded into 8 bits. Determine the duration of multi-frame if duration of a frame is 125 s. |
| A. | 2ms |
| B. | 3ms |
| C. | 4ms |
| D. | 10ms |
| Answer» B. 3ms | |
| 7. |
Sampling rate for each speech channel on 32-channel PCM is 8 KHz each encoded into 8 bits. Determine duration of frame with time slot duration of 3.9 s. |
| A. | 125 s |
| B. | 130 s |
| C. | 132 s |
| D. | 133 s |
| Answer» B. 130 s | |