What is the purpose of the FCS field in a frame?
The FCS (Frame Check Sequence) field in a frame serves the purpose of ensuring data integrity during transmission. It is a method of error detection commonly used in network protocols.
The FCS field contains a checksum value that is calculated based on the content of the frame. When a frame is sent from a transmitter to a receiver, the receiver recalculates the checksum and compares it to the received FCS value.
If the recalculated checksum matches the received FCS value, it indicates that the frame was received without any errors. However, if the checksum values do not match, it signifies that errors occurred during transmission.
By including the FCS field, the receiver can determine whether the received frame is corrupted or not.
This helps in ensuring data integrity throughout the network, particularly in scenarios where transmission errors are likely to occur, such as in wired or wireless networks.
In summary, the purpose of the FCS field is to provide a way to detect errors in data transmission and ensure the reliability of the received frame.
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