UPSC CAPF AC 2026 Paper 1 · Question 123

Question 123 of the UPSC CAPF (AC) 2026 Paper I (19 July 2026). Try it first, then open the answer and explanation.

1. CAPF 2026 · P-I · Q123 · General Science · Science & Technology

   Which one among the following devices is used for converting digital signals into analog signals and vice versa?

   1. Router
   2. Switch
   3. Bridge
   4. Modem

   निम्नलिखित में से किस डिवाइस का प्रयोग डिजिटल सिग्नलों को ऐनालॉग सिग्नलों तथा विलोमतः बदलने के लिए किया जाता है?

   1. राऊटर
   2. स्विच
   3. ब्रिज
   4. मॉडेम
   Show answer

   Answer: (4) Modem

   उत्तर: (4) मॉडेम

   A modem (modulator-demodulator) modulates a computer's digital data into analog signals for telephone or cable lines and demodulates incoming analog signals back into digital data. Routers, switches and bridges only forward data between networks or network segments.

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