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Which of the following are features of windows operating system?
a) user friendly
b) not expensive
c) provide support for software
d) all of these


UNIX Operating System


Which of the following operating systems is multitasking and multi-user operating system?
a) disk operating system           
b) windows
c) UNIX operating system      
d) mac operating system


Who developed UNIX operating system?
a) Ken Thompson        
b) Dennis Ritchie
c) john Henry              
d) both a & b



When did UNIX operating system was developed at bell lab?
a) 1968
b) 1969
c) 1970
d) 1971


In which language UNIX operating system first developed?
a) C language              
b) C++ language
c) assembly language
d) none of these