21. are software systems that learn how users work, and provide assistance in their daily tasks. a. Intelligent agents. b. AI methods. c. Data mining. d. neural networks 22. ANN is the acronym for a. Artificial Nitrate Networks b. Artificial Neural Networks c. Affiliated Neural Networks d. Analog Neural Networks 23. What is the approach designed to deliver only the information users want or need? a. electronic commerce b. push technology c. client/server technology d. electronic customization 24. What is the unique Internet name assigned to each node called? . a. ASCII address b. TCP/IP protocol c. domain name d. web address 25. Which of the following is NOT true about an extranet? a. It is typically secured behind a firewall. b. It is open to the public. c. Regular Internet lines can be used to access it. d. It uses the TCP/IP protocol. 26. OLTP is the acronym for a. Online Transact Process. b. Offline Transaction Processing c. Online Transaction Processing d. Online Transacting Product. 27. Which of the following is NOT a characteristic of neural computing? a. massive parallel processing b. fast retrieval of large amounts of information c. the ability to recognize patterns based on experience d. sequential processing 28. TCO is an acronym for a. Total Costing of Owner b. Total Cost of Ownership c. Tackling Cost of Owner d. None of the above 29. Management information systems mainly focus on which of the following? a. Routine middle management reports intended to improve productivity and quality. b. Strategic information used by top executives to help make long-term decisions. c. Minute-by-minute readouts and printouts for operators so they can maximize productivity. d. Daily answers for ad hoc questions posed by operators in the form of intelligent information systems. 30. Software systems that emulate human brain are called a. Intelligent agents. b. AI methods. c. Data mining. d. Neural Networks