Electronic mail, often abbreviated as email, e.mail or e-mail, is a method of exchanging digital messages. E-mail systems are based on a store-and-forward model in which e-mail computer server systems accept, forward, deliver and store messages on behalf of users, who only need to connect to the e-mail infrastructure, typically an e-mail server, with a [...]

The Domain Name System (DNS) is a hierarchical naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participants. Most importantly, it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment [...]

Dial-up Internet access is a form of Internet access that uses telephone lines. The user’s computer or router uses an attached modem connected to a telephone line to dial into an Internet service provider’s (ISP) node to establish a modem-to-modem link, which is then used to route Internet Protocol packets between the user’s equipment and [...]

In computing, a cookie (also tracking cookie, browser cookie, and HTTP cookie) is a small piece of text stored on a user’s computer by a web browser. A cookie consists of one or more name-value pairs containing bits of information such as user preferences, shopping cart contents, the identifier for a server-based session, or other [...]

In computer science, a cache  is a collection of data duplicating original values stored elsewhere or computed earlier, where the original data is expensive to fetch (owing to longer access time) or to compute, compared to the cost of reading the cache. In other words, a cache operates as a temporary storage area where frequently [...]

MOUNTAIN VIEW, Calif.–Google’s dual-pronged operating-system strategy will likely produce a single OS down the road, according to Google co-founder Sergey Brin. Many Google observers were puzzled when the company announced plans for Chrome OS in July, coming amid growing acceptance of the company’s Android operating-system project as a smartphone and Netbook OS. After all, why [...]

It’s the media equivalent of moving out of your parents’ house, heading to the nearest tattoo and piercing parlor, and yelling FREEEEEEDOM!: AOL has unveiled the “new brand identity” for its post-Time Warner era, slated to begin December 10 when it begins trading on the New York Stock Exchange as a separate company. And there’s [...]

E-learning (or electronic learning or eLearning) encompasses forms of technology-enhanced learning (TEL) or very specific types of TEL such as online or Web-based learning. Nevertheless, the term does not have a universally accepted definition and there are divides in the e-learning industry about whether a technology-enhanced system can be called e-learning if there is no [...]

In computer networking and computer science, digital bandwidth, network bandwidth or just bandwidth is a measure of available or consumed data communication resources expressed in bit/s or multiples of it (kbit/s, Mbit/s etc). Bandwidth may refer to bandwidth capacity or available bandwidth in bit/s, which typically means the net bit rate, channel capacity or the [...]