Operating System (OS)
Link encryption

is used only to debug
is more secure than end-to-end encryption
can not be used in a public network
None of these
is less secure than end-to-end encryption

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Operating System (OS)
All of the following are task performed by the operating system except

Managing hardware on the computer
Provides an interface for user to interact with computer
Controlling the access that application program has to the CPU
Performing housekeeping task like file compression and disk defragmentation

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Operating System (OS)
System maintenance:

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

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Operating System (OS)
What hole will allocates in "Worst-Fit" algorithm of memory management?

It allocates the smaller hole than required memory hole
It allocates the smallest hole from the available memory holes
It allocates the largest hole from the available memory holes
It allocates the exact same size memory hole

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