Client-Server Networks - ✔✔A type of network in which a server directs the clients' requests for resources. Dial-Up - ✔✔A type of network connection in which data is passed through phone lines. Embedded System - ✔✔An operating system that combines processors and software in a device. Firewall - ✔✔Hardware or software used to protect data by determining what can get in and out of a network IP Address - ✔✔A numerical address that identifies computers and devices on a network. ISP (Internet Service Provider) - ✔✔A company that provides customers access to the Internet. Input - ✔✔The first stage of the computing process, in which a user initiates an action by giving the computer information or a request. Internet - ✔✔The worldwide network of connected computers and servers