Operating System (OS)
What is the name given to the software which can be legally compiled and often used for free?

Mindware
Shareware program
Public domain program
Firmware program
None of these

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Operating System (OS)
A page fault

is an error is a specific page
is an access to a page not currently in memory
occurs when a program accesses a page of memory
None of these
is a reference to a page belonging to another program

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Operating System (OS)
A public key encryption system

does not encode the data before transmitting it
allows only the correct receiver to decode the data
allows anyone to decode the transmission
allows only the correct sender to decode the data
None of these

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Operating System (OS)
System maintenance:

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

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