Coaxial cable – a cable consisting of copper, the central wire and a metal (copper or foil) braid (screen), separated by a dielectric layer (internal insulation) and placed in a common outer sheath. This cable is often used as an antenna cable for TV. However, having advantage over the cable length between repeaters in the area where a kilometer over the twisted pair, is pleased to shortcomings: rather inconvenient and more difficult to install than twisted pair, data transfer rate of 10 Mbit / sec. Fiber (also known as fiber-optic cable), the information on it is not transmitted electrical signal, a light that is it is not exposed to electromagnetic fields. It consists of a transparent glass through which light travels over long distances (up to tens of kilometers) with little attenuation.
Advantages: The largest data rate shortcomings of roads is very difficult to assemble. Wireless home network (Wi-Fi) in Currently, wireless technology is beginning to use the cup at home, this is due to the falling prices of wireless equipment and computers themselves. Wireless technology can help connect the home to Internet, multiple computers, you share a printer, will provide an opportunity to play games on the network, there is no need to lay expensive cabling system, which also spoils the interior. Wireless networking standards currently in Russia are two of them: 802.11b and 802.11g. 802.11b wireless standard is the first appeared in Russia and used to date. Data transfer rate (11Mbps) and safety low. Used for encryption protocol WEP, which has a static key and can be easily hacked.
This standard is not recommended for use for the time being it is only used on older hardware that does not supports other more secure standards. This 802.11g standard has replaced the 802.11b. It has increased the data rate of up to 54 Mbps. And when the equipment maintenance technology superG maximum speed can is 152 Mbps. And improved security with the introduction of two new protocols for WPA and WPA2. Despite the development of security protocols, improper equipment adjustment can negate all the efforts, so it's best leave the setting of wireless networks at home and office professionals. From the above we can conclude – that the installation of SCS is a general term which includes the installation of a LAN (computer network is mainly based on twisted pair or set up and mounting hardware for WiFi networks), installation of video surveillance networks, as well as installation of a television network. Also pay special attention to the pros and cons of wired and wireless network … Wired Networking: The advantages include – resistance to cracking of the outside (the street) On the downside include the establishment of technological openings for wiring and mounting Wireless computer network: The advantages include – Minimization of construction works can be attributed to the downside – in finding the signal overlap between the computers is attenuated actual coverage in practice is around 20 meters, and to protect the perimeter of the signal outsiders require expensive equipment