Decision Support Systems Exam 2 - Part 1 Q1. Dynamic models take a single snapsh
ID: 3751717 • Letter: D
Question
Decision Support Systems Exam 2 - Part 1Q1. Dynamic models take a single snapshot, where everything occurs in a single interval.
a. true
b. false
Q2. Long-range planning would be considered to be a ________ model.
a. dynamic
b. static
c. mathematical
d. multidimensional
e. simulation
Q3. Linear programming involves experimenting on a model of a system.
a. true
b. false
Q4. Simulation involves experimenting on a model of a system.
a. true
b. false
Q5. Which model is designed to find the best solution from a large number of possible alternatives using a step-by-step process?
a. Decision trees
b. Markov analysis
c. Linear programming
d. Heuristic programming
e. Simulation
Q6. The types of decision-making situations that may require analysis (in order of increasing complexity) are certainty, risk, and uncertainty.
a. true
b. false
Q7. The technique of Mathematical programming can be classified as:
a. simulation.
b. heuristics.
c. optimization.
d. optimization subject to constraints.
e. enumeration.
Q8. A DSS is designed to determine what will be; an MIS is designed to report what was.
a. true
b. false
Q9. A blind search is designed to support individual decision-makers with sight impairment.
a. true
b. false
Q10. Influence diagrams can be constructed with varying degrees of detail.
a. true
b. false
Q11. There are many different types of models, but an individual DSS can consist of only one.
a. true
b. false
Q12. Which model is designed to predict the future for a given scenario?
a. Decision trees
b. Markov analysis
c. Linear programming
d. Heuristic programming
e. Simulation
Q13. Decision trees are capable of handling multiple-goal problems.
a. true
b. false
Q14. The decision-maker's attitude toward risk can change the outcome of a situation involving risk.
a. true
b. false
Q15. Expected values are computed by multiplying:
a. the largest expected results by their probability.
b. all results by their probabilities, then summing them up.
c. all results by their probabilities, then selecting the best.
d. all probabilities by their expected results.
e. all expected results by their probabilities.
Q16. Business dashboards provide real-time views of data
a. true
b. false
Q17. An object-oriented database management system allows you to analyze data at a conceptual level that emphasizes the natural relationships between objects.
a. true
b. false
Q18. Data mining must use statistics to analyze data.
a. true
b. false
Q19. XML will help future data integration projects because of its ability to overcome poor business logic.
a. true
b. false
Q20. Knowledge consists of data items and/or information organized and processed to convey understanding, experience, accumulated learning, and expertise as they apply to a current problem or activity.
a. true
b. false
Q21. Data quality is important because it can affect the quality of organizational decisions.
a. true
b. false
Q22. The two most common data warehouse architectures are three-tiered and four-tiered.
a. true
b. false
Q23. Data, information, and knowledge are essentially the same thing.
a. true
b. false
Q24. In a data warehouse, data are organized by:
a. time.
b. subject.
c. source system.
d. degree of volatility.
e. size.
Q25. Intrinsic data quality refers to the ease of understanding or interpretability of data.
a. true
b. false Decision Support Systems Exam 2 - Part 1
Q1. Dynamic models take a single snapshot, where everything occurs in a single interval.
a. true
b. false
Q2. Long-range planning would be considered to be a ________ model.
a. dynamic
b. static
c. mathematical
d. multidimensional
e. simulation
Q3. Linear programming involves experimenting on a model of a system.
a. true
b. false
Q4. Simulation involves experimenting on a model of a system.
a. true
b. false
Q5. Which model is designed to find the best solution from a large number of possible alternatives using a step-by-step process?
a. Decision trees
b. Markov analysis
c. Linear programming
d. Heuristic programming
e. Simulation
Q6. The types of decision-making situations that may require analysis (in order of increasing complexity) are certainty, risk, and uncertainty.
a. true
b. false
Q7. The technique of Mathematical programming can be classified as:
a. simulation.
b. heuristics.
c. optimization.
d. optimization subject to constraints.
e. enumeration.
Q8. A DSS is designed to determine what will be; an MIS is designed to report what was.
a. true
b. false
Q9. A blind search is designed to support individual decision-makers with sight impairment.
a. true
b. false
Q10. Influence diagrams can be constructed with varying degrees of detail.
a. true
b. false
Q11. There are many different types of models, but an individual DSS can consist of only one.
a. true
b. false
Q12. Which model is designed to predict the future for a given scenario?
a. Decision trees
b. Markov analysis
c. Linear programming
d. Heuristic programming
e. Simulation
Q13. Decision trees are capable of handling multiple-goal problems.
a. true
b. false
Q14. The decision-maker's attitude toward risk can change the outcome of a situation involving risk.
a. true
b. false
Q15. Expected values are computed by multiplying:
a. the largest expected results by their probability.
b. all results by their probabilities, then summing them up.
c. all results by their probabilities, then selecting the best.
d. all probabilities by their expected results.
e. all expected results by their probabilities.
Q16. Business dashboards provide real-time views of data
a. true
b. false
Q17. An object-oriented database management system allows you to analyze data at a conceptual level that emphasizes the natural relationships between objects.
a. true
b. false
Q18. Data mining must use statistics to analyze data.
a. true
b. false
Q19. XML will help future data integration projects because of its ability to overcome poor business logic.
a. true
b. false
Q20. Knowledge consists of data items and/or information organized and processed to convey understanding, experience, accumulated learning, and expertise as they apply to a current problem or activity.
a. true
b. false
Q21. Data quality is important because it can affect the quality of organizational decisions.
a. true
b. false
Q22. The two most common data warehouse architectures are three-tiered and four-tiered.
a. true
b. false
Q23. Data, information, and knowledge are essentially the same thing.
a. true
b. false
Q24. In a data warehouse, data are organized by:
a. time.
b. subject.
c. source system.
d. degree of volatility.
e. size.
Q25. Intrinsic data quality refers to the ease of understanding or interpretability of data.
a. true
b. false
Explanation / Answer
Q.1
Ans- Ture
Resion:-To use models and solution techniques effectively, one need to have gained experience through developing and solving simple ones.
Q.2
Ans- Multidimensional
Resion: A long-range plan is a set of goals (usually five to ten) that outlines the path for the company's future. When the long-range plan is in place, a strategic plan should be developed to define the objectives and actions necessary to achieve the goals spelled out in the long-range plan.
Q.3
Ans-True
Resion: Linear programming can be applied to various fields of study.
Q.4
Ans-True
Resion: The application of simulation involves specific steps in order for the simulation study to be successful.
To recognize if simulation is the correct approach to solving a particular problem, four items should be evaluated before to conduct the study.
1- Type of Problem
2- Availabilty of Resourrces
3-Costs
4- Availability of Data
Q.5
Ans- Simulation
Q.6
Ans-True
Resion: When simulation is applied inappropriately, the study will not produce meaningful results. The failure to achieve the desired goals of the simulation study may induce blaming the simulation approach itself when in fact the cause of the failure lies in the inappropriate application of simulation.
Q.7
Ans- Optimization
Resion: When the allowed set contains only real values, it is called a real-valued programming problem. Under this classification, optimization problems can be classified as deterministic or stochastic programming problems.
Q.8
Ans- False
Resion: Decision support systems are used by top level managers to make semi-structured decisions.
MIS is the acronym for Management Information Systems. In a nutshell, MIS is a collection of systems, hardware, procedures and people that all work together to process, store, and produce information that is useful to the organization.
Q.9
Ans- True
Q.10
Ans-True
Resion: Alternative, information, and preference are termed decision basis in decision analysis, they represent three required components of any valid decision situation.
Q.11
Ans-True
Q.12
Ans- Simulation
Q.13
Ans- True
Q.!4
Ans- False
Q.15
Ans- All results by their probabilities, then selecting the best
Resion: We can compute the expected value by multiplying each outcome by the probability of that outcome, then adding up the products.
Q.16
Ans- False
Q.17
Ans- True
Q.18
Ans- False
Q.19
Ans- False
Q.20
Ans- True
Q.21
Ans.- True
Resion: Data quality is important because without high-quality data, you cannot understand or stay in contact with your customers. In this data-driven age, it is easier than ever before to find out key information about current and potential customers.
Q.22
Ans.- True
Q.23
Ans.-False
Resion: KNOWLEDGE implies familiarity, awareness and understanding of
INFORMATION as it applies to an environment.
Q.24
Ans.-C Source System
Resion: Data warehouse is an information system that contains historical and commutative data from single or multiple sources. It simplifies reporting and analysis process of the organization.
Q.25
Ans.-True
Resion: Representational data quality refers to the way, data is formatted (concise and consistent) and the degree to which you can derive meaning from it (interpretability and ease of understanding). Simply imagine the data validation routines for an online survey.
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