Optical cable: This type of cable uses the concept of light reflected through a plastic or glass core. The core is surrounded by thinner plastic or glass and it is called the coating, which is used to transmit large volumes of data. The main advantage of this cable is that it is light, the capacity and bandwidth will be increased, the signal attenuation is less, etc. The disadvantages are high cost, fragile, difficult to install and maintain, and one-way.
Infrared Waves: Infrared (IR) waves are used in very close range communications because they cannot pass through obstacles. Therefore, it prevents intrusion between systems. The frequency range of these waves is 300GHz to 400THz. These waves are used in TV remotes, keyboards, wireless mice, printers, and more.
An identification of a range of World Wide Web Technologies.
The World Wide Web (www, W3) is an information space where documents and other Web resources are identified by URIs, linked together by hypertext links, and accessible via Internet. It is simply called Web. Hypertext documents, commonly referred to as web pages, are primarily text documents formatted and annotated with Hypertext Markup Language (HTML). Web pages may contain links to images, videos, and software components that are rendered to the user by a web browser application, running on the user's computer, as cohesive pages of content. multimedia. Built-in hyperlinks allow users to navigate between web pages. When multiple web pages are published with a common theme or under a common domain name, the collection is often referred to as a single site. The World Wide Web had several differences from other hypertext systems available at the time. The site only requires a one-way link, not a two-way link, allowing someone to link to another resource without the owner of that resource taking action. It also greatly reduces the difficulty of deploying web servers and browsers (compared to previous systems), but in turn introduces the chronic problem of link rot. Unlike its predecessors like HyperCard, the World Wide Web is non-proprietary, allowing servers and clients to be developed independently and extensions to be added without license restrictions. On April 30, 1993, CERN announced that the World Wide Web would be free for everyone. Two months after it was announced that server-side implementations of the Gopher protocol were no longer free to use, this prompted a rapid shift from Gopher to the Web. One of the first popular web browsers was ViolaWWW for Unix and X Windowing systems.
