Which of the following subphases are defined in the maintenance phase of the life cycle models?
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A. B. C. D.ACD.
In the maintenance phase of the life cycle models, there are typically several subphases that are defined to ensure that the system continues to function as intended and any issues that arise are addressed in a timely and effective manner. These subphases typically include:
Change control: This subphase involves managing and controlling any changes made to the system, including modifications to software, hardware, or documentation. Change control ensures that any changes made to the system are properly evaluated, approved, documented, and implemented, in order to minimize the risk of introducing errors or vulnerabilities.
Configuration control: This subphase involves managing and controlling the configuration of the system, including its hardware, software, and network components. Configuration control ensures that the system is configured correctly and that any changes to the configuration are properly documented and tracked.
Request control: This subphase involves managing and controlling the requests for changes or modifications to the system, including requests for new features, enhancements, or bug fixes. Request control ensures that all requests are properly evaluated, prioritized, and addressed in a timely and effective manner.
Release control: This subphase involves managing and controlling the release of new versions or updates to the system, including software patches, bug fixes, and new features. Release control ensures that all releases are properly tested, documented, and deployed, in order to minimize the risk of introducing errors or vulnerabilities.
Overall, the maintenance phase of the life cycle models is critical for ensuring the ongoing security and functionality of the system, and these subphases are designed to ensure that any issues or changes are properly managed and controlled.