Which of the following is classified under security measures for protecting networked environments?

The correct choice is comprehensive because all of the options listed serve vital roles in securing networked environments.

Firewalls act as a fundamental line of defense by monitoring and controlling incoming and outgoing network traffic based on predetermined security rules. They create a barrier between trusted internal networks and untrusted external networks, effectively filtering out unauthorized access attempts and various forms of cyber threats.

Demilitarized Zones (DMZ) are network segments that act as a buffer zone between an internal network and an untrusted external network, such as the internet. By placing public-facing services, like web servers in a DMZ, organizations can help protect their internal networks from potential attacks, as the DMZ is designed to absorb attacks that might otherwise target the more sensitive internal environment.

Encryption is crucial for safeguarding data integrity and confidentiality as it transforms data into a format that is unreadable to unauthorized users. This is particularly significant for protecting data in transit across networks, ensuring that sensitive information remains secure from eavesdropping and interception.

Each of these security measures plays a distinct yet complementary role in establishing a robust defense strategy for networked environments, making the selection of all of the above the correct choice.