Operating System (OS)
A partitioned data set is most used for

storing backup information
storing ISAM files
None of these
storing program data
a program or source library

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Operating System (OS)
Assembler language

is usually the primary user interface
None of these
requires fixed-format commands
is quite different from the SCL interpreter
is a mnemonic form of machine language

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Operating System (OS)
The LRU algorithm

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

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Operating System (OS)
Operating system

provides a layered, user-friendly interface
None of these
All of these
links a program with the subroutines it references
enables the programmer to draw a flowchart

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