1. What are the objectives of the change management process? 2. What is the role
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Question
1. What are the objectives of the change management process?
2. What is the role of the change control board or product development group?
3. Describe the three different platforms that may be involved in a system building process?
4. Describe the three risk categories that are normally used in hazard assessment for safety-critical systems.
5. Why is assuring system security a more challenging problem than assuring system safety?
6. What is security risk management?
7. Suggest two possible vulnerabilities when login/password authentication is used?
8. What are four complimentary approaches to security checking?
Explanation / Answer
1.
Change Management process:
The Change Management process is useful in controlling the changes in the lifecycle, which enables the user with beneficial changes that are to be made with fewer problems to IT services.
The objectives of change management process are:
To respond to the change in the customer business requirements while minimizing the rework, disturbances and reducing the failures.
To respond to the IT requests and the business requests to place the services along with the business needs.
Ensuring that the changes should be updated and evaluated and the changes should be authorized, prioritized, tested and implemented and documented in a sequence.
Ensuring that the configuration management system maintains all the changes that are recorded.
Optimizing the risk of overall business.
Managing the changes to reduce the risk exposure, to achieve success and by ensuring the stakeholder communication.
2.
Change Control Board and its role in product development:
A change board is an approach which is used to control changes to a software product. The change board works by bringing the representatives from each party together including the development, quality control and customer satisfaction.
The management is given the right to accept or reject the changes to put forward. The management should be maintained by experienced representatives.
To raise the visibility for later use and reducing the number of uncontrolled changes to the product.
The main purpose of change analysis is to analyze the proposed changes from every corner of the classic tradeoff triangle.
3.
Software building process:
It is a process of gathering all the source code files that are required in building an application and compiling the files to build artifacts. The artifacts include the barriers or executables. It is also known as Integration.
The three platforms implementations that are involved in system building process are:
Platform Independent Model: The model with high level of abstraction which is independent of technology implementation.
Platform Specific model: It specifies the system in terms of implementation constructs that are available in technology implementation.
Implementation specific model: The source code that describes the system.
4.
The safety critical requirements are functional, data or interface requirements that should be implemented properly to avoid or minimize the hazards.
The completeness of the safety critical systems can be addressed by considering all modes and analyzing I/O variables completeness.
The hazard assessment used to categorize the safety critical risks are:
High risk: The safety requirements referred to safety important requirements.
Medium risk: The safety requirements referred to safety significant requirements.
Low risk: The safety requirements referred to safety relevant requirements.
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