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
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
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)
Data encryption

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

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