Media type is a pathway which is use to communicated from one computer to ano6 computer. Media is considering in two media type
Media type
Media type is a pathway which is use to communicated from one computer to ano6 computer. Media is considering in two media type.
- Trusted media
- Untrusted media
- Trusted media
It consist a cable and it is responsible 100% transfer the data.
Cables:-
Type of cables:-
- Twisted pair utp and stp
- Co-axial
- Fiber optic
Twisted pair:-
Twisted pair consist two types,
- STP (shielded twisted pair) cable
- UTP (unshielded twisted pair) cable
STP:- STP is use for underground fitting.
UTP:- UTP is used for open.
UTP is consisting of following color code:-
| Orange white | Tx |
| Orange | Tx |
| Green white | Rx |
| Blue white | |
| Blue | |
| Green | Rx |
| Brown white | |
| Brown |
Type of UTP cables:-
Cat 1: use audio for telephone and its dtr is 4 Mbps.
Cat 2: use for computer network and its dtr is 8 Mbps.
Cat 3: use for computer network and its dtr is 16 Mbps.
Cat 4: use for computer network and its dtr 20 Mbps.
Cat 5: use for computer network and its dtr 100 Mbps.
Cat 6: use for computer network and its dtr is 100 Mbps to 1 Gbps.
Using the UTP cables we are to create various cable type to connect various devices.
- Straight through:- it is used for to connect dissimilar types of device. Like hub to pc, switch to pc, switch to router.
| Hub / switch | PC |
| Orange white | Orange white |
| Orange | Orange |
| Green white | Green white |
| Blue white | Blue white |
| Blue | Blue |
| Green | Green |
| Brown white | Brown white |
| Brown | Brown |
2. Cross over cable:- it is use to connect similar type of device like pc to pc, hub to hub, switch to switch.
| PC | PC |
| Orange white | Green white |
| Orange | Green |
| Green white | Orange white |
| Blue white | Blue white |
| Blue | Blue |
| Green | Orange |
| Brown white | Brown white |
| Brown | Brown |
3. Roll over:- it is use to connect router to computer it is also called console cable.
| Router | PC |
| Orange white | Brown |
| Orange | Brown white |
| Green white | Green |
| Blue white | Blue |
| Blue | Blue white |
| Green | Green white |
| Brown white | Orange white |
| Brown | Orange |
Cable specification:-
| Gigabit | 1000 base t | 1 gtps baseband twisted pair |
| Fast ethernet | 100 base t | 100 Mbps baseband twisted pair |
| Ethernet | 10 base t | 10 Mbps baseband twisted pair |
Co-axial:-
It is mostly use for TV network. This cable is available in,
10 base 2 10 Mbps speed distance 200m
10 base 3 10 Mbps speed distance 300m
10 base 5 10 Mbps speed distance 500m
Fiber optic:-
It is one the best cable to transmit the data audio and video to long distance networking. It is very expensive and complicated to manage.
Specification:-
1000 base LX long wavelength, multimode[3 km] or single mode [100 km]
1000 base sxshort wavelength,
10 base F 2000 meters
Fiber optic mode:-
- Multi-mode used LED used in LAN's
- Single mode used laser used in telephone network
Connectors:-
- SC (subscriber connector)
- ST (straight tip connector)
Ethernet: any network is configuring using twisted pairfiber optic cable is called ethernet.
Token ring: any network is configuring using co-axial cable is called token ring.
- Untrusted media:-
It consist to wireless frequency and it is not secure to transfer the data 100%.
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