Operating System (OS)
The higher versions of the operating systems are so written that programs designed for earlier versions can still be run. What is it called?

Upgradability
Universality
None of these
Upward mobility
Upward compatibility

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Operating System (OS)
Which of the following statements is not true about the FORTRAN language?

All of these
FORTRAN is a high level language
FORTRAN is extensively used to write programs for performing scientific computations
None of these
A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine

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