CompTIA

Laptop Hardware

100

This mobile display type is most common and requires a backlight

What is LCD

200

This display type produces its own light and has better contrast

What is OLED

300

This feature allows phones to act as a hotspot

What is tethering

400

This mobile connection type allows tap-to-pay

What is NFC

500

This accessory connects phones to external displays

What is a Lightning or USB-C video adapter

Networking basics

100

This port number is used for HTTP

What is 80

200

This port is used for secure web browsing

What is 443

300

This protocol translates domain names into IP addresses

What is DNS

400

This IP version uses 128-bit addresses

What is IPv6

500

This device assigns IP addresses automatically on a network

What is DHCP