Operating System (OS)
Data encryption

is mostly used by public networks
is not necessary, since data cannot be intercepted
cannot be used by private installations
None of these
is mostly used by financial networks

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Operating System (OS)
Which, of the following, is true for testing and debugging?

Testing detects the syntax errors in the program while debugging corrects those errors in the program
Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program
None of these
Testing and debugging indicate the same thing
All of these

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