Operating System (OS)
Part of a program where the shared memory is accessed and which should be executed invisibly is called

None of these
mutual exclusion
directory
critical section
semaphores

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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
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
None of these

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Operating System (OS)
System maintenance:

is usually not necessary
is not required if the system is well written
None of these
always requires several programs
is necessary on all systems, regardless of how good

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