Cable/Media Flashcards
RG-6
Copper Coax Cable
● Commonly used by local cable companies to connect individual homes
RG-59
Copper Coax Cable
● Typically used to carry composite video between two nearby devices
● Example: TV to the cable box
BNC
Stick n Twist coax copper connector
● Termed Bayonet Neill-Concelman or British Naval Connector
● Was used for 10BASE2 Ethernet
F-connector
Screw coax copper conector
● Typically used for cable TV and cable modem connections
UTP
Unshielded twisted pair
▪ Number of twists determines how much EMI can be blocked
● CAT 6 has more twists per inch than CAT 5
▪ UTP is cheaper than STP
▪ Media of choice in most LANs
STP
Shielded Twisted Pair (STP)
▪ Wires are twisted in pairs and surrounded in a metallic shielding to minimize EMI
▪ Outer shielding minimizes EMI, but makes STP cost more than UTP
RJ-45
▪ RJ-45
● 8-pin connector in Ethernet networks
● Most Ethernet use only 4-pins
RJ-11
RJ-11
● 6-pin connector
● Commonly only 2 or 4 pins are used
● Commonly found in telephone systems
DB-9 or DB 25 (RS-232)
DB-9 or DB-25 (RS-232)
● 9-pin or 25-pin D-subminiature
● Used for asynchronous serial communications and connecting to an external modem
Straight-through-Cable (Patch cable)
▪ Both ends of the cable have matching pin outs
▪ T-568B is the preferred standard for wiring a building if no pre-existing pattern is used
▪ Data Terminating Equipment (DTE) to Data Communications Equipment(DCE)
● Computer to switch
● Router to modem
Crossover Cable
CONNECT SWITCH TO SWITCH/DEVICE TO SAME DEVICE
▪ Send and receive pins of the cable are swapped in the end pin outs
▪ Use to connect a WORKSTATION TO WORKSTATION
● Not required if switch support MDIX
Plenum Cable
● Special UTP/STP cable that has a fire-retardant outer insulator o Minimizes dangerous fumes if cable on fire o Safe for use in ceilings, walls, and raised floors
PVC
Non-Plenum Cable
● Normal UTP/STP rated cable
● Cannot be used in raised floors, ceilings, or walls
MMF
Multimode Fiber (MMF)
LED
▪ Shorter distances than single-mode fiber
▪ Larger core size allows for multiple modes of travel for the light signal
▪ Core size: 62.5 microns
▪ Common uses:
● Routers to switches
● Switches to switches
● Servers to switches
SMF
Single-Mode Fiber (SMF) LASERS ▪ Longer distances than multimode fiber ▪ Smaller core size allows for only a single mode of travel for the light signal ▪ Core size: 10 microns ▪ Common uses:
● Routers to switches
● Switches to switches
MDF
Main Distribution Frame
Manages IDF and connects private network to ISP
IDF
Intermediate Distribution Frame
66 Block
Used for phones and older LAN wiring
Cross talk
110 Block
Used for higher speed networks
CAT 5 or highter
