The CPU manipulates data and processes software or operator instructions. DNS allows one to use the Internet without remembering long lists of numbers. A DS-1 consists of 1.544 Mbps of bandwidth and may be carried by public or private services on two pair of copper cables. A DS-3 requires the use of fiber optics or microwave for transmission. Electronic mail , or e-mail, refers to text messages that are written by one person and sent to another, whether one desk away or in another country.
Ethernet is the main local area network transport in use today.
This cable comes in two types, single mode and multimode, each with its own unique place in communications. Single mode FO cable is typically used where long distances and very high speeds are required, while multimode is used for intra-building communications and places where lower bandwidths are required. Home Run refers to a kind of cabling which is installed so that the individual cables run from each telephone, computer or video station directly back to the central equipment or switching location. Hub is an electronic device through which data station connections are made to the network. ISP stands for Internet Service Provider.