Operating System (OS)
The Memory Address Register

is a hardware memory device which denotes the location of the current instruction being executed.
None of these
contains the address of the memory location that is to be read from or stored into.
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".

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Controlling the fuel injection system of an automobile engines
Controlling access to a shared printer in a network
Ensuring that system clock works correctly on server
Managing the access to system files in a laptop computers

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The function(s) of file system is (are):

to provide for long and short term storage of files with appropriate economic tradeoffs.
to provide security against loss of information due to system failure
None of these
All of these
to provide complete file naming freedom to the users and to permit controlled sharing of files

ANSWER DOWNLOAD EXAMIANS APP