Operating System (OS)
A bar that inform you the available options in your computer, opened applications, background running applications and can be used to switch between applications quickly is

Task bar
Status bar
Tool bar
Menu bar

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Operating System (OS)
Paging

is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
is a method of allocating processor time.
None of these
consists of those addresses that may be generated by a processor during execution of a computation.
allows multiple programs to reside in separate areas of core at the time.

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Operating System (OS)
The LRU algorithm

pages out pages that have not been used recently
pages out pages that have been least used recently
None of these
pages out the first page in a given area
pages out pages that have been used recently

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Operating System (OS)
Uniform Symbols Table

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
a permanent table which lists all key words and special symbols of the language in symbolic form
contains all constants in the program
None of these

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