Multiple choice

Directions: What is the full form of the abbreviation given in bold?

ISDN

  1. Internal Service Digital Network

  2. Interfaced Service Digital Network

  3. Intelligent Service Digital Network

  4. Integrated Service Digital Network
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over traditional circuits of the public switched telephone network.

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