Operating System (OS)
Uniform Symbols Table

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
a permanent table which lists all key words and special symbols of the language in symbolic form
None of these
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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Operating System (OS)
System generation:

None of these
varies in difficulty between systems
requires extensive tools to be understandable
is always very difficult
is always quite simple

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