Operating System (OS)
The advantage of a command processor running only built-in commands is:

None of these
flexibility to the users in running lists of commands by simply collecting them in named batch command files
the command set being common across different hardware configurations
the processing is much faster than would other-wise be the case when user defined commands are used
users can create system programs and run them as commands

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The Memory Address 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