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Welcome to the Software Maintenance MCQs Page

Dive deep into the fascinating world of Software Maintenance with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Software Maintenance, a crucial aspect of Software Engineering. In this section, you will encounter a diverse range of MCQs that cover various aspects of Software Maintenance, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Software Engineering.

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Check out the MCQs below to embark on an enriching journey through Software Maintenance. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Software Engineering.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Software Maintenance. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Software Maintenance MCQs | Page 4 of 20

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Q31.
What are some of the major causes of maintenance problems?

a.

Unstructured code

b.

Insufficient knowledge of the system or application domain

c.

Absence, out of date, or insufficient documentation

d.

All of the above

Discuss
Answer: (d).All of the above Explanation:Some of the major causes of maintenance problems are unstructured code, insufficient knowledge of the system or application domain, and absence, out of date, or insufficient documentation.
Q32.
What is the definition of software evolution according to Lehman and Belady?

a.

The changes in the design and coding of software systems over time

b.

The gradual increase in the structure of software systems over time

c.

The gradual decrease in the complexity of software systems over time

d.

The changes in hardware and software platforms over time

Discuss
Answer: (a).The changes in the design and coding of software systems over time Explanation:The definition of software evolution according to Lehman and Belady is the changes in the design and coding of software systems over time.
Q33.
What is the Law of Continuing Change in software evolution?

a.

A system undergoing changes until it is cost-effective to replace it with a new version

b.

A program that becomes more structured over time

c.

A program that becomes less complex over time

d.

The implementation of new enhancements into a system

Discuss
Answer: (a).A system undergoing changes until it is cost-effective to replace it with a new version Explanation:The Law of Continuing Change in software evolution states that a system that is being used undergoes continuing change, until it is judged more cost-effective to restructure the system or replace it by a completely new version.
Q34.
What is the Law of Increasing Complexity in software evolution?

a.

A program that becomes more structured over time

b.

A program that becomes less complex over time

c.

A program that becomes more complex over time as a result of changes

d.

The implementation of new enhancements into a system

Discuss
Answer: (c).A program that becomes more complex over time as a result of changes Explanation:The Law of Increasing Complexity in software evolution states that a program that is changed, becomes less and less structured (the entropy increases) and thus becomes more complex. One has to invest extra effort in order to avoid increasing complexity.
Q35.
What is the ultimate result of entropy in software systems?

a.

Systems becoming easier to maintain over time

b.

Systems becoming more complex and difficult to maintain

c.

Systems becoming more structured and easier to maintain

d.

Systems being replaced with completely new versions

Discuss
Answer: (b).Systems becoming more complex and difficult to maintain Explanation:The ultimate result of entropy in software systems is that the systems become more complex and difficult to maintain. The initial structure degrades and complexity increases, which in turn complicates future changes to the system.
Q36.
What is the purpose of refactoring in agile methods?

a.

To prevent the onset of entropy in software systems

b.

To replace old systems with completely new ones

c.

To improve the code design and structure

d.

To prevent the implementation of new enhancements into a system

Discuss
Answer: (c).To improve the code design and structure Explanation:The purpose of refactoring in agile methods is to improve the code design and structure. Refactoring is based on identifying 'bad smells' and reworking the code to improve its design.
Q37.
What is the main problem with software maintenance?

a.

Scanty knowledge of the system by maintenance programmers

b.

Lack of documentation

c.

Insufficient understanding of the system from its source code

d.

All of the above

Discuss
Answer: (d).All of the above Explanation:The main problems with software maintenance are the scant knowledge of the system by maintenance programmers, lack of documentation, and insufficient understanding of the system from its source code.
Q38.
What makes it difficult for maintenance programmers to understand the system from its source code?

a.

Spaghetti-like code

b.

Availability of multiple sources

c.

Presence of updated documentation

d.

None of the above

Discuss
Answer: (a).Spaghetti-like code Explanation:The more spaghetti-like the source code is, the less easy it becomes to disentangle it and gain a sufficient understanding of the system.
Q39.
Why do maintenance programmers become part historian, part detective, and part clairvoyant?

a.

Because of the lack of documentation

b.

Due to quick-fix mode of maintenance

c.

Because of deadlines and other time constraints during initial development

d.

All of the above

Discuss
Answer: (d).All of the above Explanation:Maintenance programmers become part historian, part detective, and part clairvoyant due to the lack of documentation, quick-fix mode of maintenance, and deadlines and other time constraints during initial development.
Q40.
Why is it important to have a design rationale for software maintenance?

a.

To document the final decisions

b.

To help maintenance programmers make the right decisions

c.

To provide a comprehensive description of the software

d.

To avoid opportunistic mode of operation by programmers

Discuss
Answer: (b).To help maintenance programmers make the right decisions Explanation:A design rationale is often missing and that maintenance programmers have to reconstruct the rationale to make the right decisions.
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