Certificates of deposit

http://www.ubspainewebber.com/indinv/invopt/tfi/tfiprod/tfi_cdrates_frame.html

1 What is a certificate of deposit ?

2  How is it determined at what interval interest is paid ?  Explain

3 Describe the benefits of CD's

4  What are the risks associated with CD's ?

5  What is a  callable CD ?

6  To what amount are Cd's insured and by whom ?