Settings that control what a user can access and modify. Useful for locking down sensitive files.

A secret phrase that grants access to an account. The longer and more random, the better.

For temporarily sharing your computer. Has very limited access to files and settings.

A profile for logging into a system. Can be an administrator (full control) or standard user (limited).

Audio from multiple speakers positioned around you. 5.1, 7.1, Dolby Atmos are popular setups.

High Dynamic Range. Heightens a picture’s dynamic range (contrast) for richer, more detailed images.

Routes data between networks. Most home “routers” are actually routers, switches, and wireless access points in one unit.

Converts signals between analog (like cable or phone lines) and digital (like Ethernet). The bridge between your home network and the internet.

Connects multiple wired devices on a network so they can talk to each other.

A virtual endpoint for network communication. Different services use specific port numbers, like 80.