How to work network.

How to work network.

We are usually all connected to some kind of network. If you have a smart phone in your hand and a SIM card on that phone. Then you are covered by the SIM card network. The network is not limited to just SIM cards. We will know more about this network below and also know about solutions to problems with the network related.

What is the network?

When multiple computers are connected together to exchange information, it is called a network. Minimum two computers are required a network.

Network Types:

The network is generally divided into 3 parts:

1. LAN

2. MAN

3. WAN

How to work network.

Local Area Network (Lan):

A local area network is called a network composed of several computers located in the middle of the same building. The data transfer speed of this network is 10 Mbps. The devices used in this network are repeaters, hubs, network interfaces, etc.

Metropolitan Area Network (Man):

The Metropolitan Area Network is a network consisting of several LANs within the same city. Such a network can extend up to 50 - 75 miles.The data transfer speed of this network is gigabits per second.The devices used in such networks are routers, switches, microwave antennas, etc.

Wide Area Network (Wan):

Wide area network is a network built on remote LANs. This type of network has a data transfer speed of 56 Kbps to 1.544 Mbps. The speed of the van is changing slowly. The devices used in such networks are routers, modems, van switches, etc.

Topology:

The list of computers connected to a network is called Tropology.Topology plays a special role in network design. Topologies can be of various types such as bus topology, star topology, ring topology, mesh topology etc.

Network cable:

A network cable is the cable that is used to transmit data from one computer to another.

Different types of cable are used for networking

For example

1. Co-axial cable.

2. Twisted pair cable.

3. Fiber optic cable.

1. Co-axial cable:

Coaxial cables are used in some local area networks. Co-axial cables are of different types. For example - 50 ohms. 75 ohms 93 ohms. The price of this cable is much lower, because of the copper made EMI problem.

2. Twisted pair cable:

There are two types of twisted pair cable.

Shielded twisted pair cable.Unshielded twisted pair cable.

➢Shielded twisted pair cable:

Each twisted pair of shielded twisted pair cable has a tight cover. As a result, the electronics interface is much lower. The data transfer speed of this cable is 500mbps.

➢On-shielded twisted pair cable:

Unshielded twisted pair cable pliers have no extra shielding, only a plastic jacket on the outside. The data transfer rate of this cable is 16 Mbps.

3. Fiber optic cable:

This cable is used as a glass media rather than copper wire. As a result there is no electro magnetic interface. The data transmission speed of this cable is very high. There are two types of fiber optic cable. (Single mode fiber and multimode fiber). Its main disadvantages are the cost is high and difficult to install.

Repeater:

Repeater is a device used to amplify signals.If you amplify the signal using a repeater before it goes a distance of 185 meters, it can cross another 185 meters. It works in the physical layer of the OSI model.

Hub:

The hub is a repeater with multiple terms. It works with electric signals. There is no hub headache for the network address or map address of the network adapter. It also works on the physical layer of the OSI model.

Bridge:

A bridge is a device that connects multiple network segments. It creates bridging tables for each segment to account for different devices. It works in the data link layer of the OSI model.

Switch:

The switch is a bridge with multiple ports. It stores the list of Mac addresses on each node. It works on the OSL model's data link layer.

Router:

Routing is the process of sending data from one network to another. The device used for Routing is the router. It works on the OSI model's network layer.

Gateway:

Gateway A gateway is a device used to connect different types of networks. It translates the protocol. It works in 4 layers of the OSI model.