Digital Transmission of Data MCQ’s

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This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Digital Transmission of Data”.

1. Why is digital data not easily affected by noise?
a) High power transmission
b) Cannot easily change binary 1 to 0
c) High frequency transmission
d) Low frequency transmission

2. What is the process of digital communication where a threshold value is set at the receiver to reduce noise?
a) Signal threshold
b) Data regeneration
c) Signal regeneration
d) Signal cut off

3. Which of the following is false with respect to digital data transmission?
a) LAN is a digital data transmission
b) Can transmit binary data
c) Only restricted to communication between computers
d) Can transmit analog data

4. What is the number of error bits that occur for a given number of bits transmitted called?
a) Bit error
b) Error rate
c) Bit error rate
d) Error bit rate

5. Why can Digital data use time division multiplexing?
a) Less power
b) High power
c) Discrete data
d) Continuous data

6. Which of the following bit has an error if odd parity is used?

dataParity bit
A10000
B10010
C11001
D11111

a) A
b) B
c) C
d) D

7. Data is transmitted in 512 bytes. What is the average number of errors expected if the system BER is 2:10,000?
a) 1
b) 0
c) 0.542
d) 0.819

8. Speed of transmission is increased by channel encoding.
a) True
b) False

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