Chapter 8 Lesson 2 - Common Peripherals

Question 1

____ and Windows share the same standard QWERTY keyboards

Answer 1

Linux and Windows share the same standard QWERTY keyboards

Question 2

What are modifier keys?

Answer 2

Modifier keys allow you to perform keyboard shortcuts

Question 3

What modifier keys are shared by Linux and Windows? (2)

Answer 3

Ctrl + Alt

Question 4

What is macOS version of Ctrl + Alt modifier keys? (2)

2/3 Apple modifier keys

Answer 4

1. Control
2. Option

Question 5

What is the Command key on an Apple keyboard? What is its Windows equivalent? (2)

Answer 5

macOS special modifier key
Windows Logo Key = Command key on macOS

Question 6

Can you use a Windows keyboard with macOS? (2)

Answer 6

Yes, but you need to go to:
1. System Preferences
2. Keyboard Preferences
to map the modifier keys correctly

Question 7

What’s the best, economical thing to do for a physically damaged keyboard?

Answer 7

Replace it, time is money!

Question 8

How does a barcode scanner work? How does it read the bars? (2)

Answer 8

1. It works one-dimensionally (side to side)
2. It scans and reads the spaces/width in between each line to determine a value

Question 9

What are 2 barcode readers commonly found with personal computers?

Answer 9

1. Pen scanners
2. Hand scanners

Question 10

How do pen scanners look like and how do they work? (2)

Answer 10

They look like an ink pen
They are swiped across the barcode

Question 11

What ports did barcode scanners use before and now? (2)

Answer 11

Barcode scanners used to use PS/2 ports but now they use USB ports

Question 12

How do QR codes encode data?

Answer 12

QR codes encode data 2 dimensionally using different sizes and groupings of small black squares

Question 13

What do biometric devices do?

scan

Answer 13

They scan and record unique aspects of a person’s body parts such as retina, head image, fingerprint, iris using a sensing device like a scanner