PART I True or False (If false, please explain why).

1. Virtualization support includes CPU, memory, and device virtualization. ( 5 points)

2. Hardware supported virtualization does not need changes to the guest operating system so it is always faster. ( 5 points)

PART II Short Answers

1. Please use an example to explain what a distributed system is. (5 points). Please explain TWO of the following issues of a distributed system (meaning, how it is achieved, etc.) (20 points)

a. Transparency b. Flexibility c. Reliability d. Performance e. Scalability

2. Which of the following is NOT an example of cloud computing, and why? (15 points)

1. Amazon EC2

2. Google G mail

3. Parallel computing on a server cluster

4. Dropbox file sharing

3. Please draw a figure to show how the operating system kernels, the hypervisor, and applications are arranged for type 1 or type 2 virtualization.

4. Please explain paravirtualization, the advantages, and disadvantages.

5. Please explain what side-channel attacks are and why cache memory based attacks are popular.