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2 questions · 2010 · answers as per the UPSC key

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UPSC 2010 · Q13 · Science & Technology › Computer & Information Technology · Save

Consider the following :

  1. Bluetooth device
  2. Cordless phone
  3. Microwave oven
  4. Wi-Fi device

Which of the above can operate between 2.4 and 2.5 GHz range of radio-frequency band ?

(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 2 and 4 only
(d) 1, 2, 3 and 4
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Answer: (d) 1, 2, 3 and 4
UPSC 2010 · Q89 · Science & Technology › Computer & Information Technology · Save

Which among the following do/does not belong/belongs to the GSM family of wireless technologies?

(a) EDGE
(b) LTE
(c) DSL
(d) Both EDGE and LTE
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Answer: (c) DSL