21.
A relocate program form is one which

22.
If you want to execute more than one program at a time, the systems software you are using must be capable of:

23.
In analyzing the compilation of PL/I program, the description "resolving symbolic address (labels) and generating machine language" is associated with

24.
Round-robin scheduling

25.
What is the name of the system which deals with the running of the actual computer and not with the programming problems?

26.
What is the initial value of the semaphore to allow only one of the many processes to enter their critical section?

27.
Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and

28.
If you do not know which version of MS-DOS you are working with, which command will you use after having booted your operating system?

29.
A partitioned data set is most used for

30.
Page-map table is

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