Operating System (OS)
A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as

time sharing
None of these
multithreading
broadcasting
multiprogramming

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Operating System (OS)
Which of the following statement is true.

All of these
Seek analysis is used for analysing control-unit busy problems.
None of these
The LRU algorithm pages out pages that have been used recently
Thrashing is a natural consequence of virtual memory systems.

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Operating System (OS)
Addressing modes

None of these
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
defines the fundamental method of determining effective operand addresses
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
All of these

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Operating System (OS)
The dispatcher

is always small and simple
None of these
actually schedules the tasks into the processor
never changes task priorities
puts tasks in I/O wait

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

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

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