Operating System (OS)
The term 'polling' in a computer means a process by which a computer system

None of these
inquires to see if a terminal has any transaction to send
decides correct alternative by analysing several ones
multiplexes the inputs and updates the memory accordingly
detects/corrects errors

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Data encryption

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

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The instruction register

contains the address of the memory location that is to be read from or stored into.
is a hardware memory device which denotes the location of the current instruction being executed.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
None of these

ANSWER DOWNLOAD EXAMIANS APP