Question

What is Framing? List methods of framing.

Answer 1

Framing : - At data link layer , it extracts message from sender and provide it to receiver by providing sender's and receiver's address.

Types:-

1) Fixed Size Framing : - there is no need to provide boundaries to the frame, length of the frame itself acts as delimiter.

2) Variable Size Framing : -  In this there is need to define end of frame as well as beginning of next frame to distinguish.

MAY THIS HELPS U

Answer 2

Framing is a function of the data link layer. It is a function used to separate messages from the sender and receiver.

The methods of framing are as follows:

• Character Count: this method is used to count the number of characters.

• Flag Byte with Character Stuffing: it operates on bits on the other hand byte stuffing works on bytes. It is the addition of an additional byte.
• Starting and ending flags, with bit stuffing: In this extra bits are added by the network protocol designers to data streams.
• Encoding violation: it is a method used only for networks in which encoding on a physical medium has some sort of redundancy.