Operating System (OS)
Data encryption

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

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Operating System (OS)
A relocate program form is one which

cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.
can itself performs the relocation of its address-sensitive portions.
All of these
None of these
consists of a program and relevant information for its relocation.

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Operating System (OS)
Addressing modes

defines the fundamental method of determining effective operand addresses
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.
None of these

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