Operating System (OS)
The ability of an operating system to control the activities of multiple program at the same time is called

Multitasking
Multioperating
Multiprocessing
Multipaging

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Operating System (OS)
Uniform Symbols Table

a permanent table which lists all key words and special symbols of the language in symbolic form
None of these
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
contains all constants in the program
consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

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