Operating System (OS)
Data encryption

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

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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.
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.
None of these

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Operating System (OS)
Swapping

does not work with overlaying
None of these
allows each program in turn to use the memory
allows many programs to use memory simultaneously
works best with many small partitions

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Operating System (OS)
The function(s) of the Syntax phase is(are)

to build a literal table and an identifier table
to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.
to parse the source program into the basic elements or tokens of the language.
to build a uniform symbol table
None of these

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