Q741
In digital data transmission
A.
Baud rate in equal to bit rate
AnswerB.
Baud rate is always smaller than the bit rate
C.
Baud rate is always higher than the bit rate
D.
All of the above
E.
None of the above
Answer: Option A
Solution
Answer: Option A
Solution:
In digital data transmission, two important terms are used to describe the transmission speed — bit rate and baud rate.
Bit Rate: It is the number of bits transmitted per second. For example, if 1000 bits are sent every second, the bit rate is 1000 bps (bits per second).
Baud Rate: It is the number of signal units (also called symbols) transmitted per second. A symbol may represent one or more bits depending on the modulation technique used.
When each symbol represents exactly one bit (as is common in basic transmission systems), then:
Baud Rate = Bit Rate
If more complex encoding techniques are used, where each symbol can represent multiple bits (e.g., 2, 4, or more), then:
Bit Rate = Baud Rate × Number of bits per symbol
But the question refers generally to digital data transmission without such specific encoding. So, in most simple digital transmission cases, baud rate equals bit rate.
Hence, the correct answer is Option A.