1. The main Innovation and Facebook's Haystack system was:

A. Increasing data storage capacity by upgrading Hardware

B. Increasing system reliability by additional replication

C. Increasing system reliability by upgrading Hardware

D. Faster data retrieval by reducing disk access frequency

E. faster data retrieval by upgrading Hardware

2. Facebook multi-factor authentication is designed to throw out an attacker who:

A. Has obtained your account password

B. has already logged into your account

C. launch is a denial-of-service attack

D. Send you links to malware-infected sites

E. Is using a mobile device

3. Why would businesses not typically run stick applications on thin clients?

A. Businesses no longer use thin clients.

B. A thick application cannot run on a client machine

C. By definition, a thin clients counts run a thick application

D. Thick applications are too expensive

E. The applications could only have lower resource requirements