What common element is found in the singleton pattern and the factory pattern? What is the basic difference between the two patterns?
Both have code to test if the object exists and if not to create the object. If it does exist just return it. The difference is that the singleton has responsibility for itself, where the factory takes responsibility for other objects.
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A department is best defined as a
A. subgroup that is formed when members in formal groups feel uncomfortable with the way they are expected to behave. B. unique group of resources that management has assigned to carry out a particular task. C. group that is formed among employees of an organization who have similar interests. D. group of employees upon whom the decision-making authority resides.
PepsiCo has a new flavor of soft drink that it wants to test to determine reactions of probable buyers. Which of the following test-market characteristics would be least useful to PepsiCo when testing the new soft drink?
A. There are research and audit services available. B. Retailers would be cooperative. C. Testing efforts would not be easily jammed by competitors. D. Tourism is a major industry in the area. E. The city has stable year-round sales of soft drinks.
Which two types of communication can occur over a TCP/IP network?
A) sending and receiving B) reporting and inquiring C) communicating, responding D) unicasting and multicasting
The data a sink receives and often what data a source provides are fixed
Indicate whether the statement is true or false