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)
Under virtual storage,

None of these
only the active pages of a program are stored in primary storage
a single program is processed by two or more CPUs
two or more programs are stored concurrently in primary storage
interprogram interference may occur

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Operating System (OS)
Addressing modes

are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
None of these
defines the fundamental method of determining effective operand addresses
All of these

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