Operating System (OS)
The instruction register

None of these
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.
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".
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Multiprogramming systems:

None of these
are easier to develop than single programming system
are used only on large mainframe computers
execute each job faster
execute more jobs in the same time period

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Scheduling is

not required in uniprocessor systems
unrelated to performance consideration
allowing jobs to use the processor
None of these
the same regard-less of the purpose of the system

ANSWER DOWNLOAD EXAMIANS APP