Operating System (OS)
Advantage(s) of using assembly language rather than machine language is (are):

Addresses any symbolic, not absolute
All of these
It is mnemonic and easy to read.
Introduction of data to program is easier
None of these

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

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
None of these
the command set being common across different hardware configurations
flexibility to the users in running lists of commands by simply collecting them in named batch command files

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