IT Hardware Validity Checks – Part II
Posted by: Robert Davis
Configuration Management, Control Methods, Control Processes, Control Techniques, Digital Storage Devices, EDI, Electronic Commerce, Electronic Data Interchange, Feedback Control, Hardware Controls, Information Communication Technology, Information Security, Infrastructure, Integrity, IT Architecture, IT Configuration, IT Infrastructure, IT Security, Media Errors, Risk Management
Information validity implies data elements represent real conditions, rules or relationships rather than physical object characteristics. IT hardware validity checks are preventive and/or detective control measures that should be implemented to ensure appropriate data processing. There are three primary types of IT hardware validity checks: operation validity, data validity, and address validity.
Validity checking of operation codes within the Central Processing Unit (CPU)
Each computer has a recognizable instruction set (e.g. Reduced Instruction Set Computing (RISC)) with a designated code for each instruction, such as addition, subtraction, multiplication, and division. The operation validity check will signal an error condition if, during execution, a program attempts to process an invalid instruction.
Sources:
Davis, Robert E. IT Auditing: Assuring Information Assets Protection. Mission Viejo, CA: Pleier Corporation, 2008. CD-ROM.
Boritz, Efrin J. IS Practitioners’ Views on Core Concepts of Information Integrity. Rev. ed. Ontario: University of Waterloo, 2004. 9
Gleim, Irvin N. CIA Examination Review. 3rd ed. Vol. 1. Gainesville, FL: Accounting Publications, 1989. 284
Watne, Donald A. and Peter B. B. Turney. Auditing EDP Systems. Englewood Cliffs, NJ: Prentice-Hall, 1984. 232-3
“View Part I of the IT Hardware Validity Checks series here”
Post Notes: “IT Hardware Validity Checks – Part II” was originally published through Suite101.com under the title “IT Hardware Validity Checks”.
On 07/27/2012, Robert E. Davis, MBA, CISA, CICA accepted an invitation to join the ITKnowledgeExchange Advisory Board.
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