Question 1

Which of the following is false with respect to digital data transmission?

Accepted Answer

Only restricted to communication between computers

Answer

Can transmit analog data

Answer

LAN is a digital data transmission

Answer

Can transmit binary data

Question 2

Why is digital data not easily affected by noise?

Accepted Answer

Cannot easily change binary 1 to 0

Answer

Low frequency transmission

Answer

High frequency transmission

Answer

High power transmission

Question 3

What is the process of digital communication where a threshold value is set at the receiver to reduce noise

Accepted Answer

Signal regeneration

Answer

Signal threshold

Answer

Signal cut off

Answer

Data regeneration

Question 4

What is the number of error bits that occur for a given number of bits transmitted called?

Accepted Answer

Bit error rate

Answer

Error rate

Answer

Bit error

Answer

Error bit rate

Question 5

Data is transmitted in 512 bytes. What is the average number of errors expected if the system BER is 2:10,000?

Accepted Answer

0.819

Answer

0

Answer

0.542

Answer

1

Question 6

Why can Digital data use time division multiplexing?

Accepted Answer

Discrete data

Answer

High power

Answer

Continuous data

Answer

Less power

Question 7

Speed of transmission is increased by channel encoding

Accepted Answer

False

Answer

None of the above

Answer

True

Question 8

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

Accepted Answer

B

Answer

D

Answer

A

Answer

C

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