Operating System (OS)
A public key encryption system

does not encode the data before transmitting it
allows only the correct sender to decode the data
allows only the correct receiver to decode the data
allows anyone to decode the transmission
None of these

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Operating System (OS)
Thrashing

always occurs on large computers
None of these
can be caused by poor paging algorithms
is a natural consequence of virtual memory systems
can always be avoided by swapping

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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.
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
All of these

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