What is the difference between corrective and adaptive maintenance

Examples include new features to improve software reliability and performance and refining software to reduce software complexity to make it easier to maintain and understand. Software systems age. Preventive software is about future-proofing its longevity and efficacy by implementing good practices for long-term gain.

It can be beneficial to measure how much time developers spend on maintenance as a means to measure the maturity and skill of the software development team as well as the product and codebase. Even the best efforts to release bug-free code can require corrective maintenance but if this is a constant pain point that is impacting the quality of the software released, it suggests the need for improved bug testing practices. It also may signify processes that preference speed over efficacy - good code may take longer initially to produce but can result in less bug fixing and refactoring and remove the long-term pain of technical debt.

Good quality code makes long-term development and maintainability easier. An overall commitment to perfective tasks such as reducing technical debt and code refactoring helps to maintain a baseline that makes it easier to expand upon existing code and add new features faster.

Software maintenance can signify growth as a company adds product features or responds to a vastly expanding customer base. It should also be emblematic of a company with a good knowledge of the ecosystem around its products including the customer and wider business challenges faced as well as the pace of competitor evolution.

The Cosmos HackAtom is here! Get feral when you answer to the greatest interview in history Share your philosophy. Corrective maintenance is about correcting software defects, errors and faults. It's not about simply fixing a specific problem but being able to anticipate change and thus making your software flexible enough to adapt to a plethora of changes.

Explain why the fundamental software engineering principles of process, dependability, requirements management, and reuse are relevant to all types of software system. To improve the Software team collaboration it is important that all members have information regarding development and technical management.

Explain when it may be cost-effective to use formal specification and verification in the development of safety-critical software systems. Why do you think that critical systems engineers are against the use of formal methods? Why do you think that some critical systems engineers are against the use of formal methods?

There are three main types of cryptographic algorithms: Describe how they work. Briefly explain the following terms with respect to systems development and indicate the possibility of cause and effect relationships among them.

Describe the main activities in the software design process and the outputs of these activities. Describe three important differences between the processes of safety specification and security specification. Define Network Configuration. What are the various types of the network configuration, explain briefly with neat diagram.

With reference to system building, explain why you may sometimes have to maintain obsolete computers on which large software systems were developed. Software failures can cause considerable inconvenience to users of the software.

Is it ethical for companies to release software that they know includes faults that could lead to software failures? Duplicate: How might you use a model of a system that already exists? Explain why it is not always necessary for such a system model to be complete and correct. Would the same be true if you were developing a model of a new system? Why is it important to produce overall description of a system at an early stage in the system specification process.

Explain why it is practically impossible to validate reliability specifications when these are expressed in terms of a very small number of failures over the total lifetime of a system. Explain why it is important to use diverse technologies in the development of secure systems. Duplicate: Using an example, explain why it is important when developing dependable systems to consider these as sociotechnical systems and not simply as technical software and hardware systems.

Suggest circumstances where it is appropriate to use a fault-tolerant architecture when implementing a software-based control system and explain why this approach is required. Using an example, explain why it is important when developing dependable systems to consider these as sociotechnical systems and not simply as technical software and hardware systems.

State what the need for parallel computation is and discuss briefly two main factors that contribute to high performance of modern processors.

Duplicate: Identify and briefly describe four types of requirement that may be defined for a computer based system. Identify and briefly describe four types of requirements that may be defined for a computer-based system. Will Web caching reduce the delay for all objects requested 2 by a user or for only some of the objects? Adaptive software maintenance becomes important when the environment of your software changes. This can be brought on by changes to the operating system, hardware, software dependencies, Cloud storage, or even changes within the operating system.

Sometimes, adaptive software maintenance reflects organizational policies or rules as well. Updating services, making modifications to vendors, or changing payment processors can all necessitate adaptive software maintenance. Perfective software maintenance focuses on the evolution of requirements and features that existing in your system.

As users interact with your applications, they may notice things that you did not or suggest new features that they would like as part of the software, which could become future projects or enhancements. Perfective software maintenance takes over some of the work, both adding features that can enhance user experience and removing features that are not effective and functional.

This can include features that are not used or those that do not help you to meet your end goals. Preventative Software Maintenance helps to make changes and adaptations to your software so that it can work for a longer period of time.

The focus of the type of maintenance is to prevent the deterioration of your software as it continues to adapt and change. These services can include optimizing code and updating documentation as needed. Preventative software maintenance helps to reduce the risk associated with operating software for a long time, helping it to become more stable, understandable, and maintainable. For all businesses and organizations, software maintenance is an essential part of the software development lifecycle.

It is absolutely necessary for the success of your software and any evolution into the future. It is important to know that maintenance needs to go much further than fixing issues or bugs — that is only one steps of the software maintenance process.