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UPSC 2015: With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correct? 1. It is a contactless communication technology that uses electromagnetic radio fields. 2. NFC is designed for use by devices which can be at a distance of even a metre from each other. 3. NFC can use encryption when sending sensitive information. Select the correct answer using the code given below.
(a)1 and 2 only
(b)3 only
(c)1 and 3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (c) 1 and 3 only
NFC is a contact-less radio technology that operates at 13.56 MHz, and devices must typically be within about 4 cm—not a metre—of each other; thus statement 2 is wrong. It can employ encryption for secure transactions, so statements 1 and 3 are correct. ([rtlsalliance.org](https://www.rtlsalliance.org/rtls-digital-twin/technologies/nfc?utm_source=openai))
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What is the correct answer to this UPSC 2015 Science & Technology question?▼
The correct answer is option (c): 1 and 3 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Computer & Information Technology question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2015, GS Paper 1, as Question 32. It falls under Science & Technology > Computer & Information Technology.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Computer & Information Technology?▼
UPSC has asked 50 questions from Computer & Information Technology (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.