Q4- Physical Layer Quiz

Term that refers to loss of strength of a signal is called

• Noise

• Impairments

• Distortion

• Attenuation

Value of the decibel is positive, if signal is

• Attenuated

• Distorted

• Amplified

• Noisy

Type of computer data transmission in which start/stop transmission bits are not required is termed as

• asynchronous

• synchronous

• intermittent

• pulse

Transmission type which transmits data one character at a time, with the sender and receiver not synchronized with each other is termed as

• synchronous

• asynchronous

• ethernet

• internet

The sequence of operations in which PCM is done is

• Sampling, quantizing, encoding

• Quantizing, sampling, encoding

• Quantizing, encoding, sampling

• None of the above

High SNR means

• Signal more corrupted by Noise

• Signal less corrupted by Noise

A signal is measured at two different points. The power is P1 at point first point, and power is P2 at second point. The dB is zero means

• P2 is zero

• P2 smaller than P1

• P2 larger than P1

• P2 equal to P1

--------------- is a type of transmission impairment in which outside source such as cross talk corrupt a signal

• Noise

• Decibel

• Distortion

• Attentuation

Video broadcasting uses ...................transmission

• Asynchronous

• Synchronous

• None of the above

• Isochronous

the frequency of the analog carrier signal is varied proportional to the digital information signal.

• MSK

• ASK

• FSK

• PSK