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Permanently resident pages:
Every virtual memory systems have memory areas that are "pinned down", for example cannot be swapped out to secondary storage, for instance:
It is an object of a number of classes whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a membe
What are the Kernel threads Kernel threads are supported directly by the operating system .Thread creation; scheduling and management are done by the operating system. Thus the
An assembly line consists of 3 fail safe sensors and one emergency shutdown switch. The line must keep moving unless any of the given conditions occur: a. When the emergency swi
Q. What is Tape Backup? Magnetic tapes are used these days in computers for the below purposes: Backing up data stored in disks. It is essential to regularly save data s
Electrically erasable programmable read only memory (EEPROM) An EEPROM is a special type of PROM which can be erased by exposing it to an electrical charge. Like other kinds of
Explain the term- Signals - Signals are used for communication between components - Signals can be seen as real, physical signals - Some delay should be incurred in a
Q. QWERTY - Keyboard Layout ? A keyboard layout is arrangement of keys across the keyboard. There is one keyboard layout which anybody who has worked on a standard keyboard or
Grid Computing means applying the resources of a lot of computers in a network simultaneously to a one problem for solving a scientific or a technical problem that needs a large nu
Interrupts are signals which cause the CPU to suspend the currently executing program and transfer to a special program known as an interrupt handler. Interrupt handler determines
What are single stage and multistage networks? Compare the strengths and weaknesses of each. OR List the major difference in single stage, two stages and three stage Netw
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