You're trying to rearrange your backup procedures to reduce the amount of time they take each evening. You want the backups to finish as quickly as possible during the week. Which backup system backs up only the files that have changed since the last backup?
a. Full backup
b. Incremental backup
c. Differential backup
d. Backup server
Answer: B
An incremental backup backs up files that have changed since the last full or partial backup.