Exam-style question
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Compare synchronous and asynchronous data transmission. Include the role of start and stop bits in asynchronous transmission and explain why these bits are needed.
Model answer
What a good answer should say
- Synchronous transmission uses an agreed timing method to keep the sender and receiver coordinated while data is transmitted.
- Asynchronous transmission sends data in separate units, with each unit identified using extra control bits.
- A start bit indicates that a unit of data is about to begin, allowing the receiver to prepare to read the data bits.
- A stop bit indicates that the unit has ended and separates it from the next unit.
Explanation
Why this works
A strong answer makes a clear comparison of timing, identifies both start and stop bits, and explains that they mark data boundaries so the receiver can interpret separate units correctly.
Common mistake
No common mistake is linked to this question yet.