A
To calculate the financial cost of deploying free-space optics across urban areas.
B
To measure the physical weight and hardware capacity of optical transceivers.
C
To replace classical internet protocols with satellite-based television broadcasting.
D
To determine the percentage of erroneous bits in a quantum channel used to detect eavesdropping attempts.
Correct answer: (d) To determine the percentage of erroneous bits in a quantum channel used to detect eavesdropping attempts.
Explanation
Option D is correct because the Quantum Bit Error Rate represents the percentage of erroneous bits in a quantum channel, which helps in detecting eavesdropping. Options A, C, and D are incorrect descriptions unrelated to the function of error rates in quantum channels.
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