Q. For carrying digital data over long distance using either analog signal or digital signal at approximately spaced points, we must have
✅ Correct Answer: (D)
either amplifier or repeater
Explanation: 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.
Explanation by: Ravi Chauhan
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.