CS601 Midterm Subjective

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The duration of the noise is normally longer than the duration of a bit which means that when noise affects data, it affects a set of bits.

Q4. What is simplex mode of transmission?

Answer: Communication is Unidirectional only one of the two stations can transmit other can only receive

Q5. How Many Components of a Data Communication system?

1. Message
2. Sender
3. Receiver
4. Transmission Medium
5. Set of rules (Protocol)

Q6. What is purpose of distributed processing?

Answer: Multiple computers working on a problem can solve a problem faster than a computer working alone.

Q7. Give methods of Analog to Analog conversion.

Answer: Analog Conversion: Representation of analog information by an analog signal is Analog –toanalog conversion.

Q8. How many types of Bipolar encoding scheme exist?

Answer: Bipolar uses three voltage levels. There are three types of bipolar encoding:

1. AMI (Alternate Mark Inversion)
2. B8ZS
3. HDB3

Q9. Define Sampling Rate.

Answer: The accuracy of any digital reproduction of an analog signal depends upon the o. of samples taken

Q10. How bandwidth of a Modem is measured?

Answer: Bandwidth of a modem is not measured in bytes, it is measured in bits. Modem Speed –ASK (full-duplex) effective bandwidth of a telephone line is 2400 Hz, the maximum baud rate is also