Which of the following examples would require a private static IP address, but not a public static IP address?
A. A PDA connecting to the wireless network.
B. A laptop that is deployed on a LAN.
C. A file server deployed in the internal datacenter.
D. An Internet facing web server for external access.
Answer: C. A file server deployed in the internal datacenter.
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?Which of the five forces in Michael Porter's model refers to entry barriers and the relative threat of new competitors?
A. ?Potential entrants B. Buyers C. Suppliers D. Rivalry among existing firms
Answer the following statements true (T) or false (F)
1. Sampling helps accelerate the process by gathering selected data rather than all data for the entire population. 2. Data-gathering bias can be reduced by sampling. 3. When the systems analyst asks an opinion of a permanent feature of the installed information system, the executive interviewed may provide an unbiased evaluation since there is little possibility of changing it. 4. Stratification is the process of identifying sub populations (or strata) and then selecting objects or people for sampling within these sub populations.