Question Detail

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. In which of the following usually a front end processor is used ?

Virtual storage
Timesharing
Multiprogamming
Multithreading

Answer: Option B

2. UNIX is a single user operating system.

True
False

Answer: Option B

Explanation:

UNIX is a Multi user operating system.

3. Seek analysis is for ?

Paging issues
device busy problems
control unit busy problems
all of above

Answer: Option B

4. Memory protection is of no use in single user system.

True
False

Answer: Option A

5. What are global locks ?

they synchronize access to local resources
they synchronize access to global resources
they synchronize access to local and global resources
none of above

Answer: Option B

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