Near Field Communication Technology
Question
With reference to 'Near Field Communication (NFC) Technology', which of the following statements is/are correct?
Select the correct answer using the code given below.
- 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.
Options
1 and 2 only
3 only
1 and 3 only
1, 2 and 3
Explanation
Statement 1 is correct: NFC is indeed a contactless communication technology that uses electromagnetic radio fields to enable short-range communication between devices. Statement 2 is incorrect: NFC is designed for very short-range communication, typically within 10 centimetres, not a metre. This is a fundamental characteristic of NFC technology—its limited range is actually a security feature. Statement 3 is correct: NFC can employ encryption and secure protocols when transmitting sensitive information like payment credentials or authentication data. Therefore, statements 1 and 3 are correct. > NFC = Near-Field (very close range, ~10cm), not a metre. Security via encryption is available. Answer: c.
Question details
Year
2015
Paper
GS Paper 1
Question
Q32
Subject
Science & Technology
Sub-topic
Wireless Communication Technologies
Type
Statement-based
Difficulty
Medium
Nature
Static
Source hint
NCERT Science, Technology Updates 2014-2015
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