Mobile Devices

Question 1

Memory used in laptops and mobile devices

Answer 1

SO-DIMM

(Small Outline Dual In-Line Memory Module)

Question 2

Sign in or unlock your device with a fingerprint reader or face recognition

Answer 2

Biometrics

Question 3

NFC

Answer 3

Near Field Communication

Common on mobile phones and smart watches

Question 4

LCD Display

Answer 4

Liquid Crystal Display

Question 5

Advantages of LCD displays

Answer 5

Lightweight
Low Power
Inexpensive

Question 6

Disadvantages of LCD displays

Answer 6

Black levels
Requires separate backlight

Question 7

TN LCD

Answer 7

Twisted Nematic

Fast response times
Poor viewing angles - color shifts

Question 8

IPS LCD

Answer 8

In Plane Switching

Excellent color representation
More expensive

Question 9

VA LCD

Answer 9

Vertical Alignment

Good color representation
Slower response times

Question 10

OLED

Answer 10

Organic Light Emitting Diode

Thinner, lighter, no glass needed
No Backlight
Tablets, phones, smart watches
Higher cost than LCD

Question 11

CCFL

Answer 11

Cold Cathode Fluorescent Lamp

Higher voltage and power needed
No longer a common backlight
Older laptops

Question 12

LED Display

Answer 12

Backlight is LED instead of fluorescent
LEDs in matrix behind display and around edges

Question 13

Inverter

Answer 13

Used in older LCD laptops
Turn DC to AC
Verify backlight, use flashlight

Question 14

Digitizer

Answer 14

Use pen-like device or touch as input
Converts analog input into digital signals

Question 15

DB-9

Answer 15

Commonly used for RS-232 signals
Switches, routers, firewalls