Operating System (OS)
Which of the following is the allocation method of a disk space ?

All of the listed here
Indexed allocation
Linked allocation
Contiguous allocation

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Operating System (OS)
The Memory Buffer Register (MBR)

is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains the address of the memory location that is to be read from or stored into.
None of these
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
is a hardware memory device which denotes the location of the current instruction being executed.

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Operating System (OS)
What is dispatch latency ?

The whole time taken by all processor
The time taken by the processor to write a file into disk
The time taken by the dispatcher to stop one process and start another
None of the listed here

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