| Word | Description |
| Bandwidth | Bandwidth is a term used to describe the amount of data that can pass through a communications channel (such as an Internet connection) in a given period of time. |
| Blacklist | An e-mail blacklist is a list of contacts that the user deems are unacceptable to receive email from and should be sent to the trash folder. If a spam filter keeps a blacklist, mail from the listed e-mail addresses, domains, and/or IP address will always be banned. |
| Browser | A browser is a program that allows access to the web visually by allowing requests from special files known as HyperText Markup Language, The language of websites. There are many web browsers out there to choose from. Microsoft’s Internet Explorer program is one of the most popular. |