13 -- Information Technology III

13 -- Information Technology III - CPA BEC - STUDY UNIT 13...

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CPA BEC - STUDY UNIT 13 Information Technology III: Core Concepts A. Operating Systems 1. Every computer requires an operating system . The operating system negotiates the conversation between the computer’s hardware, the application the user is running, and the data that the application is working with. 2. For servers , popular operating systems include UNIX, Windows Server, and Novell Open Enterprise Server. 3. For desktop and laptop computers , three operating systems predominate: Microsoft Windows in its many variants (Windows XP, Windows ME, Windows Vista, etc.), Mac OS X, and Linux and other variants of UNIX. B. Security 1. Information security encompasses not only computer hardware and software but all of an organization’s information, no matter what medium it resides on. It involves far more than just user IDs and passwords. 2. Organizations have three principal goals for their information security programs: data confidentiality, data availability, and data integrity. a. Confidentiality is protecting data from disclosure to unauthorized persons. b. Availability is assuring that the organization’s information systems are up and running so that employees and customers are able to access the data they need. c. Integrity is assuring that data accurately reflect the business events underlying them and are not subject to tampering or destruction. 3.
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This note was uploaded on 08/29/2010 for the course CBEAM BEC taught by Professor Gleim during the Spring '10 term at De La Salle Lipa.

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13 -- Information Technology III - CPA BEC - STUDY UNIT 13...

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