In which log does Exchange log information about changes to its data?

In which log does Exchange log information about changes to its data?

• A. Transaction log
• B. Security log
• C. Application log
• D. System log

Answer: (A)

Tracking data changes for recovery is what this item is about. Exchange records every modification to a mailbox database in a set of transaction logs. These logs capture all data operations—such as inserts, updates, and deletes—and are written before the changes are permanently committed to the database on disk. This sequencing lets Exchange replay those logs to recover to a consistent state after a crash or power failure, or to restore data to a specific point in time during a backup. The other logs mentioned—Security, Application, and System—serve different purposes: they log security events, app-specific events, and operating system events, not the internal changes to Exchange data. So the transaction log is the correct mechanism for recording data changes.

Tracking data changes for recovery is what this item is about. Exchange records every modification to a mailbox database in a set of transaction logs. These logs capture all data operations—such as inserts, updates, and deletes—and are written before the changes are permanently committed to the database on disk. This sequencing lets Exchange replay those logs to recover to a consistent state after a crash or power failure, or to restore data to a specific point in time during a backup. The other logs mentioned—Security, Application, and System—serve different purposes: they log security events, app-specific events, and operating system events, not the internal changes to Exchange data. So the transaction log is the correct mechanism for recording data changes.