Operating System (OS)
What is the name of the operating system which was originally designed by scientists and engineers for use by scientists and engineers?

MS DOS
UNIX
OS/2
XENIX
None of these

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Operating System (OS)
The advantage(s) of incorporating the macro processor into pass 1 is(are):

many functions do not have to be implemented twice.
All of these
more flexibility is available to the programmer in that he may use all the features of the assembler in conjunction with macros.
None of these
Functions are combined and it is not necessary to create intermediate files as output from the macros processor and input to the assembler.

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