Operating System (OS)
In which addressing mode the operand is given explicitly in the instruction?

indirect mode
absolute mode
immediate mode
index mode
None of these

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Operating System (OS)
The term 'polling' in a computer means a process by which a computer system

inquires to see if a terminal has any transaction to send
multiplexes the inputs and updates the memory accordingly
decides correct alternative by analysing several ones
detects/corrects errors
None of these

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Operating System (OS)
The LRU algorithm

pages out pages that have been least used recently
pages out the first page in a given area
None of these
pages out pages that have been used recently
pages out pages that have not been used recently

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Operating System (OS)
A program

is typically characterized by interactive processing and time of the CPU
is a sequence of instructions
is the device where information is stored
is a device that performs a sequence of operations specified by instructions in memory.
None of these

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