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Chapter 7.2, BEC713739, BEC710290, BEC713725, BEC710274, BEC713727,…

- - - - The control unit extracts instructions from memory and decodes and executes them. It co-ordinates input, output and storage devices.
      - Option (a) is incorrect because primary memory (RAM & ROM) stores data for quick access by the computer's processor.
      - Option (c) is incorrect because RAID (redundant array of independent disks) stores the same data “redundantly” in multiple magnetic disks in one.
      - Option (d) is incorrect because arithmetic/logic unit performs arithmetical operations and logical comparisons.
- - - - Information system is the set of activities, involving people, processes, data and / or technology, which enable the organization to:
      - Obtain, generate, use and communicate transactions and information to maintain accountability.
      - Measure and review the entity's performance or progress toward achievement of objectives.
      - The IT system includes hardware, applications and systems software, personnel, procedures, data and reporting functions.
      - It can include barcode readers that capture data at its origin or voice recognition and output systems.
- - - - Control activities.
      - In the case, Connor argues to develop a single algorithmic trading strategy for all investors. By doing so it violates the risk appetite and the risk tolerance of various types of investors as given in Exhibit 1. It is a fundamental violation of control activities.
      - Control activities are policies and procedures that help ensure that management directives are carried out. Principles related to the control activities component include:
      - a. The organization selects and develops control activities that contribute to the mitigation of risks to the achievement of objectives to acceptable levels.
      - b. The organization selects and develops general control activities over technology to support the achievement of objectives.
      - c. The organization deploys control activities through policies that establish what is expected and in procedures that put policies into action.
      - The last point is violated.