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3 questions · 2011 · answers as per the UPSC key

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UPSC 2011 · Q57 · Science & Technology › Computer & Information Technology · Save

What is the difference between Bluetooth and Wi-Fi devices ?

(a) and
(b) given above are correct in this context
(c) When information is transmitted between two devices using Bluetooth technology, the devices have to be in the line of sight of each other, but when Wi-Fi technology is used the devices need not be in the line of sight of each other
(d) The statements
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Answer: (a) and
UPSC 2011 · Q69 · Science & Technology › Computer & Information Technology · Save

A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD?

  1. DVD supports Standard Definition video while BD supports High Definition video.
  2. Compared to a DVD, the BD format has several times more storage capacity.
  3. Thickness of BD is 2.4 mm while that of DVD is 1.2 mm.

Which of the statements given above is/are correct?

(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
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Answer: (b) 1 and 2 only
UPSC 2011 · Q99 · Science & Technology › Computer & Information Technology · Save

What is "Virtual Private Network"?

(a) It is a private computer network of an organization where the remote users can transmit encrypted information through the server of the organization.
(b) and
(c) given above is a correct description of Virtual Private Network.
(d) None of the statements (a),
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Answer: (b) and