Month: November 2011

Collisions

What are collisions and how they happen? In Ethernet world, the result of two nodes transmitting in the same time.

From the computer networking point of view, a packet is referred to a planned data unit. But certain computer communication links such as point to point communication don’t support data packets. In such cases, data is simply transmitted as an array of bytes or characters etc over the medium. Anyway, transformation of data into packets is a good way to achieve better bitrate of a communication medium in the course of sharing data amongst the users.

NIC (network interface card) is a gadget that works as a bridge between computers. In other words, this piece of equipment is used to join together multiple computer systems in a local area network (LAN).

In our previous post you can read about server, what is server and how it makes to give his resources avaiable to Client Computers. Now we will se the other par of Client-Server architecture,  Host in the role of Client.

MAC address, what that means and what MAC address actually is?

Let’s make it simple

The Layer 2 address is unique on the local network and represents the address of the end device on the physical media. In a LAN using Ethernet, this address is called the Media Access Control (MAC) address. When two end devices communicate on the local Ethernet network, the frames that are exchanged between them contain the destination and source MAC addresses. So we can say that unique identifier called a Media Access Control (MAC) address was created to help in finding the source and destination address in an Ethernet network. MAC addressing is added as part of a Layer 2 ethernet frame. An Ethernet MAC address is a 48-bit binary value expressed as 12 hexadecimal digits.