Bandwidth/Backbone
Bandwidth is a major and vital part of data communication, Best example would be a local Internet bringer offering T1 or DS3 service in a district area: they might have their own facilities interconnect different serving offices in a region, but they would have to send the interchange to a Tier I donor if the traffic goes outside their region. The Tier II provider makes money by buying a fixed amount of bandwidth, and selling it to many subscribers. The company must decide on what level of disagreement their clients must be showing to bandwidth meter. If you take a look at the W(wireless) ISP forum in BBR Reports you will see several outfit from time to time discussing something like "how many customers will fit on a T1.

Bandwidth Test
A bandwidth test is actually a program that sends one or more files of known size over a network to a distant computer (for example, your own computer), measures the time required for the file(s) to successfully download at the objective, and thereby obtains a theoretical figure for the data bandwidth speed test between two or more points, usually in kilobits per second kbps or megabits per second Mbps.

VPN
A virtual private network VPN is a network which uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or personage users with secure access to their organization's network. A essential private network can be contrast with an fashionable system of owned or leased lines that can only be used by one organization. The aim of a VPN is to supply the organization with the same capability, but at a much cheap cost and determine as cisco vpn error 412.

LAN
A local area network LAN is a combination of computers that are associated with devices which actually share a general communications line and wireless . In general, connected devices are division the assets of a one processor of server within a small area that is geographic may be an office building. Frequently, the server has applications and data storage that are mutual in common by several computer users. A local area network could serve few like two or three users at home network and as many like thousands of users in an FDDI network.

WAN
A wide area network (WAN) is actually isolated geographically communications networks. The word distinguish is a broader communication formation from a local area network. A WAN possibly will be privately own or rented, but the word generally connotes the insertion of public shared networks users.