Digital Vs Analog
Mediumphysics
Digital communication advantages include:
Select the correct option:
Solution
Incorrect! Answer:
Better noise immunity and error detection
Digital communication offers several key advantages over analog:
- Noise Immunity: Digital signals represent data as discrete levels (e.g., 0 and 1). Small amounts of noise don't change the level enough to cause an error, unlike analog where noise directly distorts the signal shape.
- Error Control: We can add redundant bits (parity, checksums) to identify and even correct errors that occur during transmission.
- Encryption: Digital data is easier to encrypt for security.
- Storage/Processing: Digital signals can be processed by computers and stored on digital media without loss of quality over time.
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About This Question
- Subject
- physics
- Chapter
- communication systems
- Topic
- digital vs analog
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Better noise immunity and error detection
Digital communication offers several key advantages over analog:
- Noise Immunity: Digital signals represent data as discrete levels (e.g., 0 and 1). Small amounts of noise don't change the level enough to cause an error, unlike analog where noise directly distorts the signal shape.
- Error Control: We can add redundant bits (parity, checksums) to identify and even correct errors that occur during transmission.
- Encryption: Digital data is easier to encrypt for security.
- Storage/Processing: Digital signals can be processed by computers and stored on digital media without loss of quality over time.
This medium difficulty physics question is from the chapter communication systems, covering the topic of digital vs analog. It appeared in the 2025 exam.
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