When did UNIX
operating system was developed in C language?
a) 1972
b) 1973
c) 1974
d) 1975
Which of the following symbol UNIX command prompt starts?
a) % symbol
b) $ symbol
c) @ symbol
d) & symbol
Mac Operating System
What does Mac stand for?
a) macro–operating system
b) Macintosh operating system
c) mass operating system
d) none of these
When did Macintosh was developed by Apple computer Inc?
a) January 24, 1984
b) January 24, 1985
c) January 24, 1986
d) January 24, 1987
How many main groups of Mac operating system?
a) one
b) two
c) three
d) four
