Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Multiple Choice Questions
Q2311: Fill in the blank: If a hash function uses a prime number for the number of buckets, it helps to reduce __________.
- A: Clustering
- B: Encryption
- C: Compression
- D: Sorting complexity
View Answer
A
Q2312: What is the primary goal of data mining?
- A: To retrieve stored facts
- B: To discover previously unknown patterns
- C: To update database records
- D: To manage database operations
View Answer
B
Q2313: In which type of data collection is data mining commonly practiced?
- A: Operational databases
- B: Data warehouses
- C: Online databases
- D: Transactional logs
View Answer
B
Q2314: What distinguishes data mining from traditional database interrogation?
- A: Data mining seeks to discover patterns while traditional interrogation retrieves stored facts
- B: Data mining updates data while traditional interrogation only retrieves data
- C: Data mining works with real-time data while traditional interrogation uses static data
- D: Data mining is less complex than traditional database interrogation
View Answer
A
Q2315: What is a "data warehouse"?
- A: A static collection of databases used for data mining
- B: A real-time operational database
- C: A system used for frequent updates to databases
- D: A tool for daily database operations
View Answer
A
Q2316: What is the difference between class description and class discrimination in data mining?
- A: Class description identifies properties of a group, while class discrimination identifies properties that divide groups
- B: Class description is used for real-time data, while class discrimination is used for static data
- C: Class description focuses on operational databases, while class discrimination focuses on data warehouses
- D: Class description is used for fraud detection, while class discrimination is used for marketing analysis
View Answer
A
Q2317: What type of data mining technique would be used to identify characteristics of customers who buy small economical vehicles?
- A: Class description
- B: Class discrimination
- C: Data retrieval
- D: Data warehousing
View Answer
A
Q2318: What type of data mining technique would be used to differentiate customers who shop for new cars from those who shop for used cars?
- A: Class description
- B: Class discrimination
- C: Data retrieval
- D: Data warehousing
View Answer
B
Q2319: Fill in the blank: Data mining techniques have applications in __________, including marketing, inventory management, and fraud detection.
- A: database technology
- B: data retrieval
- C: data warehousing
- D: statistical analysis
View Answer
A
Q2320: Fill in the blank: Data mining is typically practiced on __________, which are static snapshots of databases.
- A: operational databases
- B: data warehouses
- C: real-time data logs
- D: transactional systems
View Answer
B