Computer Science for IGCSE & O level - Data Transmission (Section 12 - No. 4)
What does a checksum do?
Encrypts the data.
Compares two values of data to check data integrity.
Verifies the sender's identity.
Increases the transmission speed.
Paliwanag
The checksum is the value calculated from data which is used to compare if the original data has changed or not.