COMPUTER EDUCATION 10

Twisted Pair   - A twisted pair cable is a type of cable made by putting two separate insulated wires together in a twisted pattern and running them parallel to each other. This type of cable is widely used in different kinds of  data  and voice infrastructures. Experts point out that twisted pair cabling is often used to help avoid certain kinds of signal interference. Two different types of twisted pair cable, unshielded twisted pair (UTP) and shielded twisted pair (STP) are used in different kinds of installations. UTP is common in Ethernet installations, while STP is used in various kinds of   networks   to prevent cross talk and electromagnetic interference. STP cable can also help to provide grounding. In general, twisted-pair cabling may be preferred over a common alternative, coaxial cable, for different reasons. Coaxial cable involves a single, thicker wire. Many of those who use this type of cable claim that twisted pair has a more accommodating bend radius, is eas

STAR TOPOLOGY  Alternatively referred to as a star network, star topology is one of the most common network setups. In this configuration, every  node  connects to a central network device, like a  hub ,  switch , or computer. The central network device acts as a  server  and the peripheral devices act as  clients . Depending on the type of  network card  used in each computer of the star topology, a  coaxial cable  or a  RJ-45  network cable is used to connect computers together. The picture to the right shows how this network setup gets its name, as it is shaped like a star. A star topology is a   network topology   in which all the network nodes are individually connected to a central switch, hub or computer which acts as a central point of communication to pass on the messages. In a star topology, there are different nodes called hosts and there is a central point of communication called server or hub. Each host or computer is individually connected to the central h