Web Hosting Glossary Terms starting with Letter P

Terms that will help you understand hosting services. Internet reference and glossary of Web Hosting Terms and Definitions. Please select a letter to jump to that section of The Glossary.

A glossary is defined as an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field. This Web Hosting Glossary section is specially designed to explain most of the terms that you should read and understand before you choose your web hosting service provider.

The method used to move data around on the Internet. In packet switching, all the data coming out of a machine is broken up into chunks, each chunk has the address of where it came from and where it is going. This enables chunks of data from many different sources to co-mingle on the same lines, and be sorted and directed to different routes by special machines along the way. This way many people can use the same lines at the same time.

PageRank is Google's ranking software that calculates the relevance of a webpage to the search keywords entered. The software analyses both the number of incoming links and the 'quality' of the referring webpage to generate a relative measurement between 0 (low-relevance) and 10 (high-relevance). (The 'quality' of the referring webpage is an abstract measure of how authoritative it is on the subject matter.)
See also: (Search Engine)

Registries require the use of name servers or hosts for every domain registered. Parking is the process by which someone selects a domain name, and "parks" it by registering the domain name under someone's name servers. Parking can be done by anyone, to anyone else who has active name servers. However, parking a domain name alone will result in no service (web hosting, e-mail) for that particular domain name.

Portable Document Format is a file standard developed by Adobe to allow documents to be distributed electronically while maintaining layout integrity. PDFs are useful where a large amount of information is to be provided and where reading such material onscreen in unfeasible or inappropriate.

To view PDF files you will need the Adobe Acrobat Reader. This is available as either a stand alone application or browser plug-in from the Adobe website.

A network management tool that checks to see whether you can communicate with another computer on the Internet. It sends a short message to which the other computer automatically responds. If the other computer does not respond to the ping, you usually cannot establish communications.

A (usually small) piece of software that adds features to a larger piece of software. Common examples are plug-ins for the Netscape® browser and web server . Adobe Photoshop® also uses plug-ins.

The idea behind plug-in's is that a small piece of software is loaded into memory by the larger program, adding a new feature, and that users need only install the few plug-ins that they need, out of a much larger pool of possibilities. Plug-ins are usually developed by a third party.
See also: (Flash)

Storage space for e-mails delivered via the most recent version of the Post Office Protocol (POP). Your POP3 Accounts should end in @yourdomainname.com. You can use a standard e-mail client, such as Eudora, Netscape Mail or Internet Explorer Mail to download the e-mail to your computer.
See also: (Email)

3 meanings. First and most generally, a place where information goes into or out of a computer, or both. E.g. the serial port on a personal computer is where a modem would be connected.

On the Internet port often refers to a number that is part of a URL , appearing after a colon (:) right after the domain name. Every service on an Internet server listens on a particular port number on that server. Most services have standard port numbers, e.g. Web servers normally listen on port 80. Services can also listen on non-standard ports, in which case the port number must be specified in a URL when accessing the server, so you might see a URL of the form:

shows a gopher server running on a non-standard port (the standard gopher port is 70). Finally, port also refers to translating a piece of software to bring it from one type of computer system to another, e.g. to translate a Windows program so that it will run on a Macintosh.

The process whereby the nameservers throughout the world have updated their records for a specific domain. For example, if you move your domain from one host to another, it will take around 24 hours or so for the new address to broadcast everywhere. During that 24 hour period, the traffic is decreasing at the old location and increasing at the new location.