Free Guides

Language Tutorials


           

Network+ Study Guide (N10-003)

                                                                                               Index            

CABLING


The table below lists provides details on the various Ethernet standards.

Name Standard Cable Type Connector Maximum Length Speed
10Base-T 802.3i Category 3 or better UTP cable RJ-45 100 meters(328 ft) 10 mbps
10Base-FL 802.3j Fiber optic cable ST 2000 meters 10 mbps
100Base-TX 802.3u Cat 5 twisted pair RJ-45 100 meters(328 ft) 100 mbps
100Base-FX 802.3u Fiber Optic ST, SC 2000 meters 100 mbps
1000Base-T 802.3ab CAT5e or higher RJ-45 100 meters(328 ft) 1 gbps
1000Base-LX 802.3z Laser over fiber SC Up to 5000 meters 1 gbps
1000Base-SX 802.3z Short wavelength laser over fiber SC Up to 550 meters 1 gbps
1000Base-CX 802.3z Twinax or short haul copper 9-Pin shielded D-subminiature connector, or 8-pin ANSI fiber channel type 2 (HSSC) connector. 25 meters 1 gbps
10 GBASE-LR ??? Laser over single-mode fiber optics ??? 2000 meters 10 Gbps
10 GBASE-SR 802.3ae Shortwave laser over multi-mode fiber optics ??? 300 meters 10 Gbps
10 GBASE-ER ??? Laser over either single or multi-mode fiber ??? 40000 meters 10 Gbps

Miscellaneous Cable Info
 

  • Shielded twisted pair (STP) differs from UTP in that it has a foil jacket that helps prevent crosstalk. Crosstalk is signal overflow from an adjacent wire.
  • The 5-4-3 rule: this rule states that a 10base2 network can have 5 cable segments connected with 4 repeaters, but only 3 of these segments can be occupied by computers. There is also a maximum of 30 computers per segment.
  • Plenum grade cabling is required if the cabling will be run between the ceiling and the next floor (this is called the plenum). Plenum grade cabling is resistant to fire and does not emit poisonous gasses when burned.
  • Fiber Optic cabling has an built in security as you can't intercept data as you can with other cable mediums.
     
    		•