NetCaster was Netscape Communicator’s push delivery system. It was basically a web environment that is always active and can update its onscreen appearance without going to a new URL or reloading. Like all push mechanisms, NetCaster doesn’t require the user to manually check for new content or sit through an update. It let the developer put new content in front of users instead of hoping they come looking for it.
The Netscape Communicator browser ceased development in 2002.
The domain name system (DNS) is an internet service that translates domain names (like wired.com) into IP addresses (like 188.8.131.52).
We use domain names because people can remember words better than numbers, but web servers still need the IP numbers to access the page. Every time you use a domain name, a DNS server must translate the name into the corresponding IP address.
A bridge (not to be confused with a router) is a data network device used to connect two network segments of different protocols.
For example, if you want computers on a TCP/IP network to talk to computers on a token ring network, you need a bridge to connect the two segments.
Broadband is a general term used to describe any high-speed, high-bandwidth, “always on” internet connection.
Cable modems, DSL modems, satellite link-ups, and T1 lines are all broadband devices. Dial-up modems and other low-bandwidth devices are called “narrowband.”
Channels refer to the conduits in which to deliver content or data.
In web development, channels may refer to the data feeds allowing content onscreen without reloading the page or redrawing the whole screen. Channels may also refer to the paths a computer uses to transmit information between peripherals.