23. is an example of a secondary memory device. a. An inkjet printer b. An optical dise c. Random access memory d. Read-only memory 24. -, which is used for online storage and backup, involves multiple virtual servers that are usually hosted by third parties. a. Kernel storage b. Buffer storage c. Cache storage d. Cloud storage 25. Which best defines an operating system (OS)? a. It is a set of programs for controlling and managing computer hardware and software. b. It is a computer and all the software for managing network resources and offering services to a network. c. It is a collection of disk drives used for fault tolerance and is typically found in large network systems. d. It is the main circuit board containing connectors for attaching additional boards. 26. The is the heart of a computer. a. main memory b. basic input/output system c. central processing unit d. serial port 27. A database is a critical component of information systems because any type of analysis that is done is based on data available in the database. a. True b. False 28. A database engine converts logical requests from users into their physical equivalents by interacting with other components of the database management system (DBMS). a. True b. False 29. A data mart is designed for an entire organization's use. a. True b. False 30. In the context of the types of data in a database, which is a source of internal data? a. Tax records b. Sales records c. Distribution networks - d. Economic indicators