Answer: Option [C]
The exact format of frame in case of synchronous transmission depends on whether transmission scheme is either character oriented or bit oriented
Answer: Option [D]
In case of long distance transmission we use amplifier or repeater. An amplifier enhances the strength of input signal. On the otherhand repeaters receives a signal and retransmits the same signal after increasing the power.
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Answer: Option [D]
Laser beam is a unguided transmission medium without wires. The receiver must be in the line of sight to receive the signal.
Answer: Option [B]
The highest data rate provided by optical fiber.
