Please answer software engineering questions, software engineering exam questions

Extraction code: J3L1 Software Engineering is a discipline that studies the use of engineering methods to build and maintain effective, practical, and high-quality software. It involves programming languages, databases, software development tools, system platforms, standards, design parts such as email, embedded systems, human-machine interfaces, office suites, operating systems, compilers, databases, games, etc.

At the same time, almost all industries have the application of computer software, such as industry, agriculture, banking, aviation, ** sector, etc. These applications promote economic and social development, and also improve work efficiency and life efficiency.

Problem identification is to understand the software from a system perspective, determine the comprehensive requirements for the developed system, and put forward the conditions for the realization of these requirements, as well as the standards that the requirements should meet. These requirements include: functional requirements (what to do), performance requirements (what indicators to achieve), environmental requirements (such as models, operating systems, etc.), reliability requirements (probability of no failure), security and confidentiality requirements, user interface requirements, resource usage requirements (memory, CPU, etc. required for software operation), software cost consumption and development schedule requirements, and pre-estimate the possible goals of the system in the future.

Analysis and synthesis Gradually refine all the software functions, find out the connection between the elements of the system, the interface characteristics and design constraints, analyze whether they meet the requirements, eliminate the unreasonable parts, and increase the required parts. Finally, a systematic solution is synthesized, and a detailed logical model of the system to be developed (a model of what to do) is given

Formulating a specification is the preparation of a document, and the document describing the requirements is called a software requirements specification. Please note that the result of the requirements analysis phase is the requirements specification (as if the soft exam had already tested this question) and submitted to the next stage.

Review Evaluate the correctness, completeness and clarity of the function, as well as other requirements. Only after passing the review can the next stage of work be carried out, otherwise the needs analysis will be re-conducted.

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Software Engineering Topics.

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a.The development of computer hardware technology.

b.Development of computer software technology.

c.The need for software socialization.

d.Software crisis.

The correct answer is the D Software Crisis.

The concept of software engineering emerged out of the software crisis. In order to eliminate the software crisis, through careful study of the methods to solve the software crisis, we recognized that software engineering is the way to make computer software move toward engineering science, and gradually formed the concept of software engineering.

The software crisis is mainly manifested in: (1) the growth of software demand is not satisfied; (2) the cost and schedule of software development are uncontrollable; (3) The quality of the software is difficult to guarantee; (4) the software is unmaintainable or has a very low degree of maintenance; (5) increasing software costs; (6) The improvement of software development productivity cannot keep up with the development of hardware and the growth of application demand. In summary, the software crisis can be boiled down to issues such as cost, quality, and productivity.

Software engineering is an engineering discipline that directs the development and maintenance of computer software. Adopt the concepts, principles, and principles of engineering

The technology and methods to develop and maintain software combine time-tested and proven management techniques and current capabilities.

The best technical approach to get is combined, and that's software engineering.

The framework of software engineering can be summarized as: goals, processes, and principles.

1) Software engineering goal: to produce products that are correct, usable, and costly. Correctness refers to the extent to which a software product achieves its intended functionality.

Usability refers to the extent to which the basic structure, implementation, and documentation of a software are available to users. Appropriate overhead refers to the degree to which the entire overhead of software development and operation meets the user's requirements. There are many problems to be solved in the realization of these goals, both in theory and in practice, and they form constraints on the selection of processes, process models and engineering methods.

2) Software engineering process: The steps required to produce a software product that ultimately meets the requirements and achieves the engineering goals. The software engineering process mainly includes the development process, the operation process, and the maintenance process.

They cover activities such as requirements, design, implementation, validation, and maintenance. Demand activities include problem analysis and needs analysis. Problem analysis obtains a requirements definition, also known as a software requirements specification.

Requirements analysis generates functional specifications. Design activities generally include outline design and detailed design. The outline design establishes the entire software system structure, including subsystems, modules, descriptions of related levels, and interface definitions for each module.

The detailed design generates module descriptions that are usable to the programmer, including descriptions of the data structures and machining descriptions in each module. Implementation activities transform design results into executable programs**. Validation activities are carried out throughout the development process, and the confirmation of the completion is achieved to ensure that the final product meets the user's requirements.

Maintenance activities include expansions, modifications, and improvements in the process of use. Along with the above process, there is also a management process, a support process, a training process, etc.

3) The principles of software engineering refer to the principles that must be followed in the software development process around engineering design, engineering support, and engineering management.

The emergence of software engineering is due to ().

a.The impact of programming methods.

b.The need for software industrialization is to endure the spine.

c.The emergence of a software crisis.

d.The development of computer technology.

Correct answer: c