Input Output Organization Mcqs

Our Collection of Computer Input Output Organization questions and answers focuses on all areas of Computer Input Output Organization covering a collection of most authoritative and best reference books on Input Output Organization. One should spend 1 hour daily for 2-3 months to learn and assimilate Comuter Input Output Organization comprehensively.

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31.
In daisy chaining device 0 will pass the signal only if it has..

Interrupt request

No interrupt request

Both a and b

None of the above

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32.
_________ method is used to establish priority by serially connecting all devices that request an interrupt.

Vectored-interrupting

Daisy chain

Priority

Polling

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33.
Which one of the following is true with regard to a CPU having a single interrupt request line and single interrupt grant line…??i) Neither vectored nor multiple interrupting devices is possible.ii) Vectored interrupts is not possible but multiple interrupting devices is possible.iii) Vectored interrupts is possible and multiple interrupting devices is not possible.iv) Both vectored and multiple interrupting devices is possible.

Iii

I,iv

Ii,iii

Iii,iv

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34.
The processor indicates to the devices that it is ready to recieve interrupts

By enabling the interrupt request line

By enabling the IRQ bits

By activating the interrupt acknowledge line

Either a or b

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35.
The starting address sent by the device in vectored interrupt is called as

Location id

Interrupt vector

Service location

Service id

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36.
The code sent by the device in vectored interrupt is _____ long.

Upto 16 bits

Upto 32 bits

Upto 24 bits

4-8 bits

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37.
In vectored interrupts, how does the device identify itself to the processor..?

By sending its device id

By sending the machine code for the interrupt service routine

By sending the starting address of the service routine

Either a or c

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38.
DMA interface unit eliminates the need to use CPU registers to transfer data from

MAR to MBR

MBR to MAR

I/O units to memory

Memory to I/O units

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39.
The average time required to reach a storage location in memory and obtain its contents is called the

Seek time

Turnaround time

Access time

Transfer time

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40.
The process that periodically checks the status of an I/O devices, is known as

Cold swapping

I/O instructions

Polling

Dealing

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41.
A bus connecting processor and memory, is known as

Processor-memory bus

Bus transaction

Backplane bus

Synchronous bus

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42.
1000 disks having 1,200,000-hour MTTF and disks being used 24 hours a day, and failed disks are being replaced with a new ones, then no that will fail over five years (43,800 hours) is,

25

30

36

40

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43.
A unit on the bus that initiates bus requests is called

Slave

Controller master

Striping

Bus master

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44.
Request, which is used for indicating a read request for memory, is known as

ReadReq

WriteReq

DataReq

Hot swapping

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45.
Reads/writes requests to I/O devices, are called

Input request

Output request

I/O requests

Peripheral requests

Answer Discus (0)

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