Understanding the network.pdf - Back to Home

transmission medium using BNC (British Naval Connector) "T" connectors.
The connector can be attached to a NIC with an integrated MAU or to an
external MAU directly attached to the NIC's AUI interface. Thin coaxial
cabling is also supported by DIX Ethernet. Both 10Base-5 and 10Base-2
require grounding and termination. Grounding is only required at one end of
the backbone cable—this is commonly done with the use of a cable
terminator with a ground wire. The other end of the backbone cable only
needs to be terminated. The terminator is essentially a resistor that absorbs
the current flow at the ends of the cable. Without proper termination, the
network will not function properly. Figure 4.11 depicts a 10Base-2 MAU with
a BNC "T" connector and terminator.
Figure 4.11. A 10Base-2 MAU.
• 10Broad-36—10BROAD-36 uses 75-ohm coaxial cable as a transmission
medium and, like its baseband counterparts, supports a 10Mbps
transmission rate. 10BROAD-36 uses specific frequency ranges to transmit
and receive 803.3 packets. As mentioned earlier, 10BROAD-36 networks use
special MAUs, which are essentially Ethernet modems, to send and receive
packets. Along with the job of modulating and demodulating signals, the
"modem" also modifies the frame slightly so timing can be maintained.
10BROAD-36 uses NRZ encoding (instead of Manchester) and two different
frequencies to send and receive packets. Its operation over 75-ohm cable