Packets and Frames

What are Packets and Frames.

Packets and Frames are small pieces of data that, when forming together makes a larger piece of information or message.
A frame is at layer 2 of OSI Model- The Data Link Layer.
It doesn’t have the IP address information.
It is like putting an envelope inside an envelope and sending it away.
The first envelope is the packet and other one which contains data is the frame.
This process is called encapsulation.
when we talk about IP address it would be about packets rather than frames.
packets are efficient way of communicating data across networked devices.
Because data is transferred in packets there is less chance of bottle necking.

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Header	Description
Time to Live	This field sets an expiry timer for the packet to not clog up your network if it never manages to reach a host or escape!
Checksum	This field provides integrity checking for protocols such as TCP/IP. If any data is changed, this value will be different from what was expected and therefore corrupt.
Source Address	The IP address of the device that the packet is being sent from so that data knows where to return to.
Destination Address	The device's IP address the packet is being sent to so that data knows where to travel next.