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 URL ? Uniform Resource LocationUniform Resource LocatorUniversal Resource LocatorUniform Retention Locator Answer: Option B 2. What is full form of MAC ? Mass Access ControlMedia Access ControlMass Access CarraigeMedia Access Carraige Answer: Option B 3. What is full form of PDF ? Printed Document FormatPublic Document FormatPortable Document FormatPublished Document Format Answer: Option C 4. What is full form NOS ? New Operating SystemNetwork Operating SourceNetwork Operating SystemNetwork Original System Answer: Option C 5. What is full form of DRAM ? Duo Random Access MemoryDynamic Random Access MemoryDifferent Random Access MemoryDefacto Random Access Memory Answer: Option B Read more from - Important Abbreviations Computer Awareness Questions Answers