Networking cable/fiber V2.0 Philip Schorr Second hour (added information in red)

Fiber optic cable: what is it? A networking cable with glass fiber strands in it Cables reach far with high bandwidth Less susceptible to electric interference More expensive.

Fiber Capable of high speed connections (up to and over 100 Mbps) Fiber network cards available Rapidly replacing normal networks because of high-speed capability

Fiber history 1790s – Telegraph invented 1880 – Telephone patented 1920s – Tubes used to transmit TV images covers on a bare fiber with a transparent cladding of a lower refractive index 1960s – Glass clad fibers 1964 – Needed a new type of glass 1970 – New type of glass fused with silica proved to be what was needed

Fiber history (Roman numeral 2) 1972 – Adding titanium to a fiber core 1973 – Special chemicals began surfacing 1977 – First mass use of fiber cords

What does it do? Networking fiber transfers data through pulses of light in glass through the cord. Used in both computers and phone systems. Transfers thousands of times the data as copper wire Really really really expensive. Expensive because the heads are hard to put on the wire. Light stays in glass strand because the glass strands are made of a glass core with a reflective coating.

Fiber cost 15ft. Roughly $35 30ft. Roughly $42 100ft. Roughly $80 All costs where found here, if you can find better prices, take them and run.here

Networking cables Part 2

Types of cables Cat5 twisted pair cables Cat5e twisted pair cables Cat6 twisted pair cables Cat6a twisted pair cables Coaxial cable

Cable speeds Cat11Mbps (phone only) Cat24Mbps (local talk and phone only) Cat316Mbps (10BaseT Ethernet) Cat420Mbps (token ring (rarely used)) Cat Mbps (100BaseT Ethernet) Cat5e1000 Mbps (gigabit Ethernet) Cat610,000 Mbps (gigabit Ethernet) Cat6a10Gbps CoaxialUnlisted (Mbps)

Cat#cables These cables consist of 4 pairs of twisted wires (prompting the name twisted wire cable) These cables come in both shielded and unshielded The more twists per inch the faster it can transfer data Twisted cables reduce crosstalk (reduced communication between wires) and interference Cat5 – Cat6a can run about 330ft. Before signal loss

Cat#cable contd They make use of a RJ-45 connector –It looks like a large phone Jack Shielded wires are wrapped in foil to keep from damage from electric interference

Coaxial cable Has a single copper conductor centered in the wire Has a plastic layer between the conductor and a braided metal shield Difficult to install Highly resistant to signal interference Supports long cable lengths Common connection is the Bayone-Neil- Concelman connection

Types of Coaxial cable Thin Ethernet –Runs 10Base2 –2 = Maximum roughly 200m –Actual maximum cable length 185m Thick Ethernet –Runs 10Base5 –5 = max length roughly 500m –Actual max cable length 500m –Has an extra plastic shield to keep moisture out –Perfect for long bus networks

Regular networking cable cost Cat5 cable, 35ft. - $15 Cat5e cable, 5ft. - $5 Cat6 cable, 5ft. - $3 Cat6a cable, 5ft. - $4.50 Coaxial cable, 50ft. - $17

Networking wire history 1844 – Telegraph sent the first message 1840s – Baud merges the type writer and telegraph to dispose of Morse code 1966 – American standard code for information exchange created 1970s – Xerox invents the Ethernet 1979 – multiple companies tried to standardize Ethernet connection –1980 – first standard connection made by a coaxial cable Ethernet standardized in 1983

History continued 1984 – IBM introduces token ring for faster ethernet –Twisted pair connection Second connections ran at 100MHz 1985 – CCIA started developing a standard for wiring 1987 – Twisted pair wires where widely used 1990 – 10BaseT standard created 1991 – cabling standard created 2001 – cat5e introduced 2002 – Cat6 introduced 2008 – Cat6a released

Sources Mr. Bennig optic-tutorial-network.aspx article.asp?p=170740http:// article.asp?p= od/ethernet/g/cat6-cables.htmhttp://compnetworking.about.com/ od/ethernet/g/cat6-cables.htm ap4.htmhttp://fcit.usf.edu/network/chap4/ch ap4.htm blinghist.htmhttp:// blinghist.htm