Bill Shock – is an industry term used to describe a high billed amount. This is brought about by the user not being aware of the rates or added costs.

Configuration - an arrangement of parts or elements

Content Filtering – is the technique whereby content is blocked or allowed based on analysis of its content.

Cyberslacking – in today’s terms, generally refers to staff who use their work internet access for personal reasons while maintaining the appearance of work.

Firewall - is an integrated collection of security measures designed to prevent unauthorized electronic access to a networked computer system.

IPSec (Internet Protocol Security) - a set of protocols developed to support secure exchange of packets at the IP layer. IPSec has been deployed widely to implement Virtual Private Networks (VPNs).

An information technology audit, or information systems audit, is an examination of the controls within an Information technology (IT) infrastructure.

An IT audit is the process of collecting and evaluating evidence of an organization's information systems, practices, and operations. The evaluation of obtained evidence determines if the information systems are safeguarding assets, maintaining data integrity, and operating effectively to achieve the organization's goals or objectives.
These reviews may be performed in conjunction with a financial statement audit, internal audit, or other form of attestation engagement.

IT audits are also known as automated data processing (ADP) audits and computer audits. They were formerly called electronic data processing (EDP) audits.

http://en.wikipedia.org/wiki/Information_technology_audit

A colocation centre (collocation center) ("colo") or carrier hotel is a type of data centre where multiple customers locate network, server and storage gear and interconnect to a variety of telecommunications and other network service provider(s) with a minimum of cost and complexity. Most Internet exchange points provide colocation.

Increasingly, organizations are recognizing the benefits of colocating their mission-critical equipment within a data centre.  Colocation is becoming popular because of the time and cost savings a company can realize as result of using shared data centre infrastructure. Significant benefits of scale (large power and mechanical systems) result in large colocation facilities, typically 4500 to 9500 square metres (roughly 50000 to 100000 square feet). With IT and communications facilities in safe, secure hands, telecommunications, internet, ASP and content providers, as well as enterprises, enjoy less latency and the freedom to focus on their core business.

Additionally, customers reduce their traffic back-haul costs and free up their internal networks for other uses. Moreover, by outsourcing network traffic to a colocation service provider with greater bandwidth capacity, web site access speeds should improve considerably.

Major types of colocation customers are:

• Web commerce companies, who use the facilities for a safe environment and cost-effective, redundant connections to the Internet
• Major enterprises, who use the facility for disaster avoidance, offsite data backup and business continuity
• Telecommunication companies, who use the facilities to interexchange traffic with other telecommunications companies and access to potential clients

http://en.wikipedia.org/wiki/Colocation_centre

Computer networking is the engineering  discipline  concerned with the communication between computer systems or devices. A computer network is any set of computers or devices connected to each other with the ability to exchange data.[1]  Computer networking is sometimes considered a sub-discipline of telecommunications, computer science, information technology and/or computer engineering since it relies heavily upon the theoretical and practical application of these scientific and engineering disciplines. The three types of networks are: the Internet, the intranet, and the extranet.

Examples of different network methods are:

• Local area network (LAN), which is usually a small network constrained to a small geographic area. An example of a LAN would be a computer network within a building.
• Metropolitan area network (MAN), which is used for medium size area. examples for a city or a state.Wide area network (WAN) that is usually a larger network that covers a large geographic area.
• Wireless LANs and WANs (WLAN & WWAN) are the wireless equivalent of the LAN and WAN.

All networks are interconnected to allow communication with a variety of different kinds of media, including twisted-pair copper wire cable, coaxial cable, optical fiber, power lines and various wireless technologies. The devices can be separated by a few meters (e.g. via Bluetooth) or nearly unlimited distances (e.g. via the interconnections of the Internet). Networking, routers, routing protocols, and networking over the public Internet have their specifications defined in documents called RFCs.

http://www.answers.com/topic/computer-networking

In computing, virtualization means to create a virtual version of a device or resource, such as a server, storage device, network  or even an operating system where the framework divides the resource into one or more execution environments. Even something as simple as partitioning a hard drive is considered virtualization because you take one drive and partition it to create two separate hard drives. Devices, applications and human users are able to interact with the virtual resource as if it were a real single logical resource.

The term virtualization has become somewhat of a buzzword, and as a result the term is now associated with a number of computing technologies including the following:

• storage virtualization: the amalgamation of multiple network storage devices into what appears to be a single storage unit.
• server virtualization: the partitioning a physical server into smaller virtual servers.
• operating system-level virtualization: a type of server virtualization technology which works at the operating system (kernel) layer.
• network virtualization: using network resources through a logical segmentation of a single physical network.
• application virtualization

http://www.webopedia.com/TERM/V/virtualization.html