Question Detail What is full form of ISDN ? Integrated Services Digital NetworkIntegrated Services Double NetworkInter Services Digital NetworkIntegrated Server Digital Network Answer: Option A Similar Questions : 1. What is full form of MAC ? Mass Access ControlMedia Access ControlMass Access CarraigeMedia Access Carraige Answer: Option B 2. What is full form of WWW ? World Wide WebWorld Whole WebWeb World WideWeb World Whole Answer: Option A 3. What is full form of PNG ? Portable Natural GraphicsPortable Network GraphPretty Network GraphicsPortable Network Graphics Answer: Option D 4. What is full form of SQL ? Straight Query LangaugeStructured Query LangaugeStructured Query LaisonStructured Query Linear Answer: Option B 5. What is full form NOS ? New Operating SystemNetwork Operating SourceNetwork Operating SystemNetwork Original System Answer: Option C Read more from - Important Abbreviations Computer Awareness Questions Answers