How to copy the contents in internet to my computer
Network Cable Coaxial Coaxial cable is a cable that consists of an outer plastic sheath, a copper screen, an inner dielectric insulator, and a copper core. Fiber Optic Fiber Optic cables are cables that transmit light versus an electrical signal. They are made up of a cable jacket, strengthening fibers, a buffer, a cladding and a glass core. Fiber Optic cables, since light is used instead of an electrical signal, are not susceptible to Electromagnetic Interference or Radio Frequency Interference (also known as EMI and RFI respectively.) Serial Twisted Pair Unshielded Twisted Pair (UTP) Unshielded Twisted Pair cable is one of the most commonly used cable types in todays networks. Each pair is twisted together and then twisted in an unshielded cable. Shielded Twisted Pair (STP) Shielded Twisted Pair is not as common as Unshielded Twisted Pair, but it is still used in some instances. STP is made just like a UTP cable, with the exception that a copper shield and copper ground are also run through the cable to help reduce the effects of EMI/RFI on data transmission. Straight Through Cross-Over Rollover Network Interface Controller (NIC) Card Typically when you think of a NIC Card, you should think of an NIC embedded onto the motherboard of your computer or an expansion card that is installed into an ISA,PCI, or PCI-Express slot inside your computer. Repeater One of the limitations of computer networking is found in the transmission medium. Certain cables are only capable of transmitting a certain distance before a concept called Attenuation comes into play. If the distances of a cable run exceed the physical limitations of the medium, a repeater may be placed before the limitation distance to recondition and repeat the signal so that it may run the rest of the length of the cable. Hubs Hubs are very basic devices that are made up of many NIC ports. They take the electrical signals that a computer transmits into them and repeats them out every port on the device except for the one the signals arrived in. Since hubs offer no services other than repeating signals to multiple ports, they are often called multiport repeaters. Bridges Switches Routers Firewalls
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