Communication Systems Quiz

The main purpose of a communication system is:

• To store data securely

• To transport an information-bearing signal from a source to a user destination

• To convert analog signals into digital signals

• To remove noise from a signal

The purpose of the transmitter in a communication system is:

• To generate random noise

• To transform the message signal into a form suitable for transmission

• To correct errors in received signals

• To store message signals

Which of the following is NOT a category of communication systems?

• Analog communication systems

• Digital communication systems

• Hybrid systems

• Static communication systems

In a digital communication system, analog information is transformed into discrete information through:

• Filtering and mixing

• Sampling and quantizing

• Modulation and demodulation

• Coding and decoding

Which of the following is an example of a digital information source?

• Microphone

• TV camera

• Teletype or computer output

• Loudspeaker

The primary purpose of the source encoder is:

• To detect noise

• To assign code words to symbols and remove redundancy

• To multiplex signals

• To regenerate corrupted signals

Huffman coding is an example of:

• Channel coding

• Source coding

• Modulation

• Sampling

The purpose of channel coding is:

• To compress data for storage

• To add extra bits for error detection and correction

• To remove redundancy

• To change analog signals into digital

Which of the following is NOT a method of channel coding?

• Block coding

• Convolution coding

• Huffman coding

• Error correction coding

The demodulator in a digital communication system:

• Generates new information signals

• Extracts the original message bit stream from the received waveform

• Adds redundancy to improve reliability

• Encodes the channel bits