Certified Information Systems Auditor (CISA) — Question 318

Data from a system of sensors located outside of a network is received by the open ports on a server. Which of the following is the BEST way to ensure the integrity of the data being collected from the sensor system?

Answer options

• A. Implement network address translation on the sensor system
• B. Route the traffic from the sensor system through a proxy server.
• C. Transmit the sensor data via a virtual private network (VPN) to the server
• D. Hash the data that is transmitted from the sensor system

Correct answer: D

Explanation

Hashing the data ensures that any alterations during transmission can be detected, thereby preserving data integrity. While network address translation, proxy servers, and VPNs provide various levels of security and privacy, they do not specifically guarantee the integrity of the data like hashing does.