Complete Networking Fundamentals for Beginners

Data transfer of LAN ( Part  1.2)

So lets talk about Serial Data Transfer

• Data transfer in a serial format. It means one bit of a data at time it sent.
• Data can travel in a single bit steam in both direction and this will depends on type of connection.

So let see type of connections,

• Simplex, this has only one way street
• Duplex, this has two way street it means data can send and receive  in same time
• Half-Duplex, this has two way streets but only one can use in a time.

So how fast that data can travel

A data transfer rate is the maximum bit per second (bps) that can be transmitted over a network.  

Ex; 

            10 Mbps

• "M" stands for Mega
• "b" stands for Bit 
• "Mbps" called as Bitrate 

This Bitrate use to measure the speed of the network.

Lets talk about the data transfer in LAN

Before data is transferred, it has to follow this process:

• First we have to broke large chunk of data to segments
• Then addressing information is added to each segment, making it a packet.
• These packet send to network adapters and networks adapters add some information to these packets.Then these new packets become Ethernet frames. 
• Them these frames broken in to data stream of bits.

When the data is received it goes the process in revers that I mention in top.

How does this data guys know where to go ?

You will remember that in  Complete Networking Fundamentals for Beginners ( Part  1) I mention a address called IP address.In that lesson I also tell you that how to remember that easily.Lets talk further more about IP addresses.

Most every computers and many other devices have IP addresses (Internet Protocols). It helps to uniquely identifies a device and its associated network.

A example of an IPv4 address would be 192.168.1.1 

Every IP address have two parts by subnet mask. 

    

What is Subnet Mask ?

Its a group of four numbers that define a computer's network.

Please remember,

All of the 255 in subnet mask collectively refer to the net work portion, and the 0 s refer to the host part.

Conclusion 

So we learn about how data transfer in LAN,how can we measure the speed of the network.We also learn about the best part of the network that called as IP address and how it divided.