Operating System (OS)
Addressing modes

None of these
All of these
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.
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.

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Operating System (OS)
Data encryption

is mostly used by public networks
is not necessary, since data cannot be intercepted
cannot be used by private installations
None of these
is mostly used by financial networks

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