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.

1.
In memory-mapped I/O…

The I/O devices and the memory share the same address space

The I/O devices have a seperate address space

The memory and I/O devices have an associated address space

A part of the memory is specifically set aside for the I/O operation

2.
The usual BUS structure used to connect the I/O devices is

Star BUS structure

Multiple BUS structure

Single BUS structure

Node to Node BUS structure

3.
The advantage of I/O mapped devices to memory mapped is

The former offers faster transfer of data

The devices connected using I/O mapping have a bigger buffer space

The devices have to deal with fewer address lines

No advantage as such

4.
The system is notified of a read or write operation by

Appending an extra bit of the address

Enabling the read or write bits of the devices

Raising an appropriate interrupt signal

Sending a special signal along the BUS

5.
To overcome the lag in the operating speeds of the I/O device and the processor we use

Buffer spaces

Status flags

Interrupt signals

Exceptions

6.
The method of accessing the I/O devices by repeatedly checking the status flags is

Program-controlled I/O

Memory-mapped I/O

I/O mapped

None of the above

7.
The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is

Exceptions

Signal handling

Interrupts

DMA

8.
The method which offers higher speeds of I/O transfers is

Interrupts

Memory mapping

Program-controlled I/O

DMA

9.
The process where in the processor constantly checks the status flags is called as

Polling

Inspection

Reviewing

Echoing

10.
The interrupt-request line is a part of the

Data line

Control line

Address line

None of the above

11.
The return address from the interrupt-service routine is stored on the

System heap

Processor register

Processor stack

Memory

12.
The signal sent to the device from the processor to the device after recieving an interrupt is

Interrupt-acknowledge

Return signal

Service signal

Permission signal

13.
When the process is returned after an interrupt service ______ should be loaded againi) Register contentsii) Condition codesiii) Stack contentsiv) Return addresses

I,iv

Ii,iii and iv

Iii,iv

I,ii

14.
The time between the receive of an interrupt and its service is ______

Interrupt delay

Interrupt latency

Cycle time

Switching time

15.
Interrupts form an important part of _____ systems.

Batch processing

Multitasking

Real-time processing

Multi-user

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