Correct Answer : 6
Explanation : Six backups if full recovery model are Complete backup, Differential backup, File and/or Filegroup backup, Partial backup, Copy-Only backup, Transaction log backup.
Correct Answer : Master
Explanation : The master database records all of the system level information for a SQL Server system.
Correct Answer : Model
Explanation : When a CREATE DATABASE statement is issued, the first part of the database is created by copying in the contents of the model database.
Correct Answer : Msdb
Explanation : The msdb database is used by SQL Server Agent for scheduling alerts and jobs, and recording operators.