Operating System (OS)
Interprocess communication

is required for all processes
is usually done via disk drives
allows processes to synchronize activity
None of these
is never necessary,

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Operating System (OS)
The advantage of a command processor running only built-in commands is:

the processing is much faster than would other-wise be the case when user defined commands are used
flexibility to the users in running lists of commands by simply collecting them in named batch command files
the command set being common across different hardware configurations
users can create system programs and run them as commands
None of these

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Operating System (OS)
Object code

must be rewritten before execution
is the output of compilers, but not assemblers
None of these
is ready to execute
must be "loaded" before execution

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Operating System (OS)
System maintenance:

is usually not necessary
is not required if the system is well written
always requires several programs
is necessary on all systems, regardless of how good
None of these

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