IP:

An IP address ( Internet Protocol address) is a unique number, similar in concept to a telephone number, used by machines (usually computers ) to refer to each other when sending information through the Internet . This allows machines passing the information onwards on behalf of the sender to know where to send it next, and for the machine receiving the information to know that it is the intended destination. An example of an IP address is 212.116.XX.XX.

IP Technology:

( I nternet P rotocol) The network layer protocol in the TCP/IP communications protocol suite (the "IP" in TCP/IP). The terms "IP network" and "TCP/IP network" are synonymous. "IP" is generally heard more frequently than "TCP," primarily because it is faster to say IP and also because some data are sent over the unreliable UDP/IP, rather than the reliable TCP/IP. Streaming media, VoIP and videoconferencing use UDP/IP because there is no time or need to check for dropped packets and retransmit them.

Domain name:

A domain name is the unique name of a computer on the Internet that distinguishes it from the other systems on the network. They are sometimes colloquially (and incorrectly) referred to by marketers as "web addresses".

Dial-up access:

Dial-up access is relatively slower form of internet access in which the client uses a modem to dial the internet service provider's (ISP) node, a dialup server type such as the Point-to-Point Protocol and TCP/IP protocols to establish a modem-to-modem link, which is then routed to the internet.

ADSL:

Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional modem can provide.

Broadband:

Broadband in general refers to data transmission where multiple pieces of data are sent simultaneously to increase the effective rate of transmission

E-mail:

Electronic mail, abbreviated e-mail or email, is a method of composing, sending, and receiving messages over electronic communication systems.

Web hosting:

Web hosting is a service that provides Internet users with online systems for storing information, images, video, or any content accessible via the web. Web hosts are companies that provide space on a server they own for use by their clients as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center.

ISDN:

Integrated Services Digital Network (ISDN) is a type of circuit switched telephone network system, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in better quality and higher speeds, than available with analog systems. More broadly, ISDN is a set of protocols for establishing and breaking circuit switched connections, and for advanced call features for the end user.

SMTP:

Simple Mail Transfer Protocol (SMTP) SMTP is a relatively simple, text-based protocol, where one or more recipients of a message are specified (and in most cases verified to exist) and then the message text is transferred. It is quite easy to test a SMTP server using the telnet program. SMTP uses TCP port 25. To determine the SMTP server for a given domain name, the MX (Mail exchange) DNS record is used.

POP3:

Post Office Protocol version 3 (POP3) is an application layer Internet standard protocol used to retrieve email from a remote server to a local client over a TCP/IP connection. Nearly all individual Internet service provider email accounts are accessed via POP3.

DNS:

The Domain Name System or DNS is a system that stores information about hostnames and domain names in a kind of distributed database on networks, such as the Internet. Most importantly, it provides a physical location (IP address) for each hostname, and lists the mail exchange servers accepting e-mail for each domain.

Dedicated server:

The term dedicated server refers to an advanced form of web hosting in which the customer rents, and has complete control over, an entire server. Internet connectivity is provided to the server, in many cases over 10 or 100 Mbit/s Ethernet. Dedicated servers are most often housed in data centers, similar to colocation facilities, providing redundant power sources and HVAC systems.

LAN:

A local area network (LAN) is a computer network covering a local area, like a home, office or small group of buildings such as a college.
When using Ethernet the computers are usually wired to a hub or to a switch. This constitutes the physical layer.

Dial-On-Demand (DOD):

In computing, Dial-on-demand routing (DDR) is a technique for whereby a host or router will automatically initiate a dial-up connection over an ISDN or regular public switched telephone network line when network access is required, and close the connection when no more data needs to be transmitted or received. The line will only be used when needed, which reduces the amount of money that must be spent to keep the ISDN/telephone circuit-switched connection available.
This is commonly used by home PC users when the computer automatically dials out to an Internet service provider whenever a program requests a TCP/IP connection. More advanced setups may feature a router set up to provide a similar function for an entire computer network. In other situations, a router may be configured to use dial-out lines for backup connections if the primary routes of communication have somehow been severed. This can be useful for system administrators and network administrators.

Proxy Server:

A proxy server is a computer network service which allows clients to make indirect network connections to other network services. A client connects to the proxy server, then requests a connection, file, or other resource available on a different server. The proxy provides the resource, possibly by connecting to the specified server, or by serving it from a cache. In some cases, the proxy may alter the client's request or the server's response for various purposes.

Intranet:

An intranet is a local area network (LAN) used internally in an organization to facilitate communication and access to information that is sometimes access-restricted. Sometimes the term refers only to the most visible service, the internal web site. The same concepts and technologies of the Internet such as clients and servers running on the Internet protocol suite are used to build an intranet. HTTP and other internet protocols are commonly used as well, especially FTP and email. There is often an attempt to use internet technologies to provide new interfaces with corporate 'legacy' data and information systems.

VPN:

A Virtual Private Network, or VPN, is a private communications network usually used within a company, or by several different companies or organizations, communicating over a public network. VPN message traffic is carried on public networking infrastructure (e.g. the Internet) using standard (often insecure) protocols.

Plug-n-play:

Plug and Play is a term used in the computer field to describe a computer's ability to have new devices, normally peripherals, added to it without having to reconfigure or (ideally) restart the computer. There are a number of terms or variations that describe similar abilities, including PnP, and hot swapping. The term Plug and Play is most associated with Microsoft, who started using it in reference to their Windows 95 product. Many other operating systems had already supported such features for some time, but all of them soon used the same terminology

MPLS:

In computer networking and telecommunications, Multiprotocol Label Switching (MPLS) is a data-carrying mechanism, operating at a layer below protocols such as IP. It was designed to provide a unified data-carrying service for both circuit-based clients and packet-switching clients which provide a datagram service model. It can be used to carry many different kinds of traffic, including both voice telephone traffic and IP packets.

VoIP:

Voice over Internet Protocol (IP) A type of telephone system that uses the internet to make a receive telephone voice calls. Its advantages over traditional telephony include: lower costs per call, or even free