Operating System (OS)
Generally quick launch toolbar is displayed on

The left side of taskbar
The right side of taskbar
On the middle of taskbar
A bar out of taskbar

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Operating System (OS)
Which of the following statement is true.

The LRU algorithm pages out pages that have been used recently
Thrashing is a natural consequence of virtual memory systems.
All of these
Seek analysis is used for analysing control-unit busy problems.
None of these

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Operating System (OS)
The instruction register

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 group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
None of these
contains the address of the memory location that is to be read from or stored into.
is a hardware memory device which denotes the location of the current instruction being executed.

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