MCSE : Security Specialist
Recognize the following media connectors and describe their uses:
RJ-11
Standard telephone cable connectors, usually have 4-6 wires.
RJ-45
RJ-45 connectors are used with 10-100BaseT cables. These resemble
telephone RJ-11 connectors, but are larger and house 8 wires while
RJ-11 house 4 or 6 wires. They are connected to the cable by
crimping.
AUI
A thicknet network connection uses a 15 pin attachment unit
interface (AUI) to connect the 15 pin DB 15 connector on the back of
the network adapter card to an external transceiver (shown left).
The transceiver for thicknet Ethernet includes a vampire tap (shown
on top of the transceiver) which pierces the thicknet cable to make
the network connection. From the transceiver to the network card a
drop cable is attached.
BNC
BNC barrel connector, used to connect two cables together. It is
better to use one continuous length of cable, as these connectors
weaken the signal strength.
ST / SC
Fiber
network segments always require two fiber cables: one for
transmitting data, and one for receiving. Each end of a fiber cable
is fitted with a plug that can be inserted into a network adapter,
hub, or switch. In the North America, most cables use a square SC
connector that slides and locks into place when inserted into a node
or connected to another fiber cable, Europeans use a round ST
connector instead.
Both
connectors offer the same features as far as distance and
reliability, Connectors of different types can communicate with the
use of adapters or couplers, but it is best to choose one type of
connector and stick with it over your entire network.
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