Operating System (OS)
Data encryption

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

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Operating System (OS)
What is the method of handling deadlocks?

Allow the system to enter the deadlock state and then recover
Pretend that deadlocks never occur in the system
All of these
Use a protocol to ensure that the system will never enter a deadlock state

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