Which of the following is a mechanism, which enables a user to access a system including data.

Password

The correct answer is option 3- Password.

Password is a mechanism, which enables a user to access a system including data. The system facilitates defining the user rights according to organisation policy. Consequently, a person in an organisation may be given access to a particular set of a data while he may be denied access to another set of data.

OTHER OPTIONS

• Data Audit: This feature enables one to know as to who and what changes have been made in the original data thereby helping and fixing the responsibility of the person who has manipulated the data and also ensures data integrity. Basically, this feature is similar to Audit Trail.
• Data Vault: Software provides additional security through data encryption.
• Encryption: Encryption essentially scrambles the information so as to make its interpretation extremely difficult (almost impossible). Thus, Encryption ensures security of data even if it lands in wrong hands, because the receiver of data will not be able to decode and interpret it.