11. READ COMMITTED is the default isolation level.

A. True
B. False

12. A differential backup makes a copy of the entire database.

A. True
B. False

13. SQL Server supports three recovery modes: simple, full and Bulk.

A. True
B. False

14. SERIALIZABLE is the strictest isolation level.

A. True
B. False

15. With SQL Server pessimistic locking, no lock is obtained until the user updates the data.

A. True
B. False