Operating System (OS)
A page fault

is an error is a specific page
None of these
is a reference to a page belonging to another program
is an access to a page not currently in memory
occurs when a program accesses a page of memory

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Operating System (OS)
Seeks analysis

is only shown on real-time displays
is used for analyzing device busy problems
None of these
is used for analyzing control-unit busy problems
is used for analyzing paging problems

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Operating System (OS)
Addressing modes

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

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Operating System (OS)
The main function of the dispatcher (the portion of the process scheduler) is

assigning ready process to the CPU
suspending some of the processes when the CPU load is high
swapping a process to the disk
None of these
bring processes from the disk to the main memory

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