Multiple choice general knowledge

ISD (Written on those private telephone Booths)

  1. International Sales Department

  2. Indian Subscriber Dialing

  3. International Subscriber Dialing

  4. Idiot Stupid Donkey
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ISD stands for International Subscriber Dialing, used for making international telephone calls from India. The prefix code varies by country (e.g., 001 for USA, 0044 for UK). ISD codes are essential for connecting telephone networks globally.

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