Operating System (OS)
The Register - to - Register (RR) instructions

have both their operands in the main store.
All of these
None of these
which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also

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Operating System (OS)
A public key encryption system

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

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