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Topic Mobile communication
Asked 2 times across 2 UPSC exams over 7 years (2019–2026), peaking in 2019.
Key insights
- Most tested in CSE — 1 of 2 PYQs
- Most asked in 2019
- Recurs across 2 years (2019–2026)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 2019 → CDS 2026
How the concept evolved
Rising — more than half its appearances (2 of 2) are since 2016.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CDS2026
Code Division Multiple Access (CDMA) technology is primarily used in :
- A Mobile phone communication ✓
- B X-ray
- C Artificial Intelligence
- D Colour Xerox
✓ Correct answer: (A)
Science & Technology › IT/Computing/Cyber
CSE2019
With reference to communication technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?
- LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G
- LTE is data-only technology and VoLTE is voice-only technology
Select the correct answer using the code given below.
- A 1 only
- B 2 only
- C Both 1 and 2
- D Neither 1 nor 2 ✓
✓ Correct answer: (D)
Science & Technology › IT/Computing/Cyber
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