Original subtitles

It�s also a single broadcast domain

in other words if a device like A sends a broadcast

everyone in the network would receive that broadcast

and would need to process the broadcast.

When a device received a broadcast it will process it

in other words it will received it on the Network Interface Card and then

forward it to upper layers in the OSI model

so as an example the CPU or Central Processing Unit of a PC

would be interrupted when a PC receives a broadcast. 10

So if device A starts jabbering, in other words start sending many, many broadcast 11

unto the network, those broadcast would be received by all the devices in the network 12

and every device would be interrupted and we have to process the broadcast. 13

So the CPU's of every PC will be interrupted by every broadcast sent by A 14

and would need to process that broadcast 15

if A were sending a broadcast but the traffic was only intended for B both C and D 16

would still have to receive that broadcast. 17

Process it and drop it, but the problem is their CPU's will interrupted 18

which may cause the PC to slowdown. 19

Thus, because of the issues with regards to maximum segment length 20

maximum host on a segment and cable breaks, 10base2 was replace with 10baseT. 21

10baseT uses unshielded twisted pair, it�s a very unlikely that you going to encounter 22

10base2 in today�s network. so 10baseT or twisted pair Ethernet 23

refers to the use of cable that contains insulated copper wires 24

twisted together in pairs with the maximum distance of 100 meters 25

the cable is a lot thinner and more flexible than coaxial cable 26

which was use in both 10base2 and 10base5 networks. 27

In 10baseT we tend to use unshielded twisted pair cables 28

shielded twisted pair cables maybe used in noisy environments 29

where there�s a shield around each pair of wires, plus an overall shield around the 30

cables to protect them against excessive electrical magnetic interference. 31

This maybe causes as an example where networks cables are close to electrical cables. 32

So additional protection is required. 33

But most networks tend to use unshielded twisted pair 34

where the cables are not shielded against interference in the same way. 35

Once again 10baseT means 10Mbps, base means baseband rather than broadband, 36

T means twisted pair with the maximum segment size of a 100 meters. 37

The connectors used are RJ-45 connectors as seen here and you�ve probably 38

connected an RJ-45 connected to your PC many times in the past.