Q. What is an ISR ?

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Q. An interrupt vector

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Q. DMA is used for :

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Q. In a memory mapped input/output :

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Q. In a programmed input/output(PIO) :

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Q. In an interrupt driven input/output :

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Q. In the layered approach of Operating Systems :

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Q. How does the Hardware trigger an interrupt ?

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Q. Which operation is performed by an interrupt handler ?

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Q. Why is the Software interrupt required by the processor?

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Q. Match the following list1 with list2:
a. DMA I/O -------------------------------------- 1. High speed RAM
b. Cache ---------------------------------------- 2. Disk
c. Interrupt I/O --------------------------------- 3. Printer
d. Condition code register ------------------- 4. ALU

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Q. Which of the following is an example of Spooled Device?

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Q. The following is not a layer of IO management module

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Q. If one or more devices use a common set of wires to communicate with the computer system, the connection is called ______

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Q. A ____ a set of wires and a rigidly defined protocol that specifies a set of messages that can be sent on the wires.

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Q. When device A has a cable that plugs into device B, and device B has a cable that plugs into device C and device C plugs into a port on the computer, this arrangement is called a _________

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Q. The _________ present a uniform device-access interface to the I/O subsystem, much as system calls provide a standard interface between the application and the operating system.

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Q. A ________ is a collection of electronics that can operate a port, a bus, or a device.

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Q. An I/O port typically consists of four registers status, control, ________ and ________ registers.

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Q. The ______ register is read by the host to get input.

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