Secure Your Understanding

• The use of passwords to protect data
• The use of biometric authentication to protect data
• The use of mathematical algorithms to transform data into a form that is not readily intelligible (correct)
• The use of firewalls to protect data

• To enforce access rights to data
• To transform data into a form that is not readily intelligible
• To prove the source and integrity of the data unit and protect against forgery (correct)
• To assure the integrity of a data unit or stream of data units

• Data integrity
• Data encryption
• Data transformation
• Access rights (correct)