Which type of log contains all events logged by programs, as defined by developers?

• A. Application Logs
• B. OS Logs
• C. Security Logs
• D. Network Logs

Answer: (A)

Application logs record events that the software itself is designed to log, reflecting the program’s behavior as defined by its developers. Developers instrument code to log various events—such as method entries, transactions, input values, and errors—at different levels like INFO, DEBUG, WARN, and ERROR. These logs are created specifically by the application to help diagnose issues, track workflows, and audit what the program did during a run. This is distinct from OS logs, which capture operating system and service events; security logs, which log authentication and policy-related events; and network logs, which document network traffic and device activity. So the type of log that contains all events logged by programs as defined by developers is the application log.