What are the three key properties of cloud computing?

What are the two factors contributed to cloud computing?

What are the problems of using multiple cores only to provide parallelism?

Define a cluster architecture. Provide its pros and cons?

Define load balancing from web sites$$ view.

How many user requests a web server can handle if a web site consists of $5$ servers and has $1000$ requests$/$second$?$

What are the benefits of consolidating servers into racks?

How IT operating expenses have been reduced?

How can organizations lower capital expenses when they move their servers to centralized data centers?