Operating System (OS)
Uniform Symbols Table

None of these
contains all constants in the program
a permanent table which lists all key words and special symbols of the language in symbolic form
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
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure

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Operating System (OS)
Trojan-Horse programs

do not usually work
are legitimate programs that allow unauthorized access
None of these
usually are immediately discovered
are hidden programs that do not show up on the system

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