Problem 1: Assume that a tablet server in big table is temporarily disconnected from the network and during this time its lease on its lock expires. Describe the action taken by the tablet server when it reconnects to the network and justify them.
Problem 2: How does the host OS help guest VMs in VMWare's hosted virtualization? What is the purpose of shadow page tables in VMware's hosted virtualization?
Problem 3: What is cloud cartography? How to prevent cloud cartography?
Problem 4: How does dynamic rate-limiting work in Xen's VM live migration? Why is it used?
Problem 5: What confidential information can be learned using cache-based load measurements of co-located VMs?