Why I/O management affects system performance in Operating Systems - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to explain why I/O operations can slow down a system.

Operating Systems

I/O devices are generally [1] than the CPU, causing delays.

Drag options to blanks, or click blank then click option'

Afaster

Bslower

Cequal

Dunrelated

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'faster' because they think devices are quicker than CPU.

I/O devices like disks and keyboards operate slower than the CPU, so waiting for them can slow the whole system.

2fill in blank

medium

Complete the sentence to describe how I/O management affects CPU usage.

Operating Systems

Efficient I/O management reduces CPU [1] by handling device waits properly.

Drag options to blanks, or click blank then click option'

Aidle time

Bspeed

Cusage

Dinterrupts

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing 'usage' with 'idle time'.

Good I/O management reduces CPU idle time by allowing the CPU to do other work while waiting for I/O.

3fill in blank

hard

Fix the error in the statement about I/O and system performance.

Operating Systems

I/O operations always [1] the CPU speed directly.

Drag options to blanks, or click blank then click option'

Ado not affect

Bcontrol

Cincrease

Dslow down

Attempts:

3 left

💡 Hint

Common Mistakes

Thinking I/O slows the CPU clock speed.

I/O operations do not directly change CPU speed but affect overall system performance by causing waits.

4fill in blank

hard

Fill both blanks to complete the explanation of I/O buffering.

Operating Systems

I/O buffering uses [1] to store data temporarily and [2] CPU waiting time.

Drag options to blanks, or click blank then click option'

Amemory

Bincreases

Creduces

Ddisk space

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'disk space' instead of 'memory' for buffering.

Buffering uses memory to hold data temporarily and reduces CPU waiting time by allowing asynchronous data transfer.

5fill in blank

hard

Fill all three blanks to explain how interrupt-driven I/O improves performance.

Operating Systems

Interrupt-driven I/O allows the CPU to [1] other tasks, [2] an interrupt when I/O is ready, and [3] processing.

Drag options to blanks, or click blank then click option'

Aperform

Breceive

Cresume

Dwait

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'wait' instead of 'perform' for the first blank.

This method lets the CPU perform other work, receive an interrupt when I/O completes, and resume processing efficiently.