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When did IBM released the first version of its disk operating system DOS version 1.0 ?

  • 1981
  • 1982
  • 1983
  • 1984

Answer: Option A

Similar Questions :

1. What is the name of values that are automatically provided by software to reduce keystrokes ?

  • Data Values
  • Default Values
  • Defined Values
  • Fixed Values

Answer: Option B

2. Relocation bits used by relocating loader are specified by

  • Relocating loader
  • Assembler
  • Translator
  • Linker

Answer: Option D

3. What is a page fault ?

  • is an spelling error in a page in memory
  • is a reference to a page which is in another program
  • is an access to a page not currently in memory
  • always occurs whenever a page is accessed

Answer: Option C

4. Which type of software can be used to merge data of two files in one file ?

  • System software
  • Networking software
  • Documenting software
  • Utility Software

Answer: Option D

5. UNIX is a single user operating system.

  • True
  • False

Answer: Option B

Explanation:

UNIX is a Multi user operating system.

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