11) Moore's Law and the law of mass storage help us understand why computing resources are now so readily available.
12) One technology driver transforming IT infrastructure is the rapid decline in the costs of communication and the exponential growth in the size of the Internet.
13) Transmission Control Protocol/Internet Protocol (TCP/IP) is a suite of communications protocols and a common addressing scheme that enables millions of computers to connect together in one giant global network (the Internet).
14) Cookie servers are ultra-thin computers consisting of a circuit board with processors, memory, and network connections that are stored in racks.
15) Unix and Linux are non-scalable, unreliable, and much more expensive than mainframe operating systems.
16) Once a firm decides to work with an enterprise vendor, switching can be difficult and costly, though not impossible.
17) Implementing new infrastructure requires significant changes in business processes and procedures, training and education, and software integration.
18) Grid computing involves connecting geographically remote computers into a single network to create a virtual supercomputer by combining the computational power of all computers on the grid.
19) Organizations using cloud computing generally do not own the infrastructure, they do not have to make large investments in their own hardware and software.
20) A virtual server uses the hardware of one physical computer to provide the appearance, services, and capabilities of multiple servers, each of which appear to be running their own operating system and providing a unique operating environment.