BUSI 2400 C8 Certification Exam Example Questions Correctly Defined.

The total amount of data generated by 2020 is estimated to be A) 330 petabytes. B) 3.3 zettabytes. C) 33 petabytes. D) 44 zettabytes. E) 0.33 yottabytes. - correct answer D The hyper abundance of information is sometimes called A) data abundance. B) Moore's Law. C) the Ackoff principle. D) information overload. E) dirty data. - correct answer D Data granularity refers to the degree of summarization or detail. A) relevance B) granularity C) integrity D) clarity E) quality - correct answer B If you are collecting data electronically and processing the transaction online, then you are using (a) A) online analytical processing (OLAP). B) online transaction processing (OLTP). C) data warehouse. D) data-mining. E) database management system (DBMS). - correct answer B A person's clicking behaviour on the web is termed as their A) mouse trails. B) webstream. C) clickstream. D) web tracks. E) link journey. - correct answer C Problematic data are termed A) problem data. B) irrelevant data. C) incorrect data. D) dirty data. E) untrustworthy data. - correct answer D While data may be collected in OLTP, the fact that data may not be used to improve decision making refers to (the) A) data overload challenge. B) information overload. C) data resource challenge. D) data integrity challenge. E) knowledge challenge. - correct answer C A ________ is a data collection that is created to address the needs of a particular business function, problem, or opportunity. A) database B) data mart C) data-mine D) data depot E) data warehouse - correct answer B The purpose of a business intelligence system is to provide information that A) improves decision making. B) can be summarized. C) is less granular. D) follows privacy legislation. E) has only one level of complexity. - correct answer A ________ is the application of statistical techniques to find patterns and relationships in data and to predict outcomes. - correct answer Data mining With ________, analysts do not create a model or hypothesis before running the analysis. Instead, they apply the data-mining technique to the data and observe the results. - correct answer unsupervised data mining ________ measure(s) the impact of a set of variables on another variable. A) Supervised data mining B) Regression analysis C) Unsupervised data mining D) Neural networks E) Cluster analysis - correct answer B ________ is a statistical technique that can identify groups of entities that have similar characteristics. A) Regression analysis B) Data mining C) Cluster analysis D) Character analysis E) Supervised data mining - correct answer C If transactions are entered and processed immediately upon entry, then the system is operating in - correct answer real time. ________ integrate data from multiple sources, and process those data by sorting, grouping, summing, averaging, and comparing. - correct answer Reporting systems ________ process data using sophisticated statistical techniques like regression analysis and decision tree analysis. - correct answer Data-mining systems ________ create value from intellectual capital by collecting and sharing human knowledge of products, product uses, best practices, and other critical knowledge with employees, managers, customers, suppliers, and others who need it. - correct answer KMS ________ encapsulate the knowledge of human experts in the form of if-then rules. A) Data mining systems B) Expert systems C) Business intelligence applications D) Reporting systems E) CRM systems - correct answer B The purpose of (a) ________ is to extract and clean data from operational systems and other sources. A) cluster analysis B) data mart C) data warehouse D) regression analysis E) data mining - correct answer C According to one study, the digital universe is doubling in size every ________ years. A) four B) three C) six D) two E) five - correct answer D ________ provides the ability to sum, count, average, and perform other simple arithmetic operations on groups of data. - correct answer Online analytic processing (OLAP) An OLAP report has A) measures and dimensions. B) averages. C) dimensions. D) measures and averages. E) measures. - correct answer A Systems that focus on making data collected in OLTP useful for allowing multiple decision makers to collaborate are often referred to as - correct answer decision support systems. ________ analysis is a data-mining system which computes correlation of items on past orders to determine items that are frequently purchased together. - correct answer Market-basket If you need to identify groups of entities that have similar characteristics, you need to perform (a) - correct answer cluster analysis. Which of the following systems fosters innovation, improves customer service, and increases organizational responsiveness by sharing knowledge of products, product uses, and best practices? - correct answer KMS Which of the following is an assumption about information systems that Ackoff disputed? - correct answer Managers have no proble