les enterprises to support software at a central site. Installing software at a central site minimizes support requirements. When an IT department supports applications such as the Office suite that are installed on each user's computer, it must download software and updates to every computer and ensure that each has a compatible hardware platform and operating system. By locating the software at a central site rather than on each user's computer, updates and support are simpler. In addition, fewer IT employees are required to maintain servers with applica- tions on them in remote offices. However, many of these frequently used protocols are structured in such a way that they add a great deal of overhead traffic to the Internet and enterprise networks. This is because these protocols require numerous short signaling messages between the user and the Internet for functions such as identifying graphics, checking for errors, and ensuring correct delivery and receipt of all the packets. The following protocols are used on the Internet and on corporate networks that have a web interface to information accessible to local and remote users. Ethernet This is the most common protocol used in corporate Local Area Networks (LANs). It defines how data is placed on the LAN and how data is retrieved from the network. Wi-Fi wireless networks are based on a different form of Ethernet. Hypertext Markup Language (HTML) This is the markup language used on the Internet and on enterprise networks. It is often used by employ- ees who write web pages for their organization. HTML commands include instructions to make text bold or italic, or to link to other sites. Instructions, known as tags (not visible on Internet documents), are bracketed by open and closed angle brackets (< and >), otherwise simply known as the less- than and greater-than symbols. Tags indicate how browsers should display the document and images within each web page. For example, <bold> is a command for bolding text. Tags are delivered along with the web page when u