Why maintenance consumes most software cost in Software Engineering - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to explain why software maintenance costs are high.

Software Engineering

Maintenance costs are high because software [1] over time.

Drag options to blanks, or click blank then click option'

Astays the same

Bdegrades

Cimproves

Dis deleted

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'improves' because software gets better automatically.

Software tends to degrade over time due to changes in environment, technology, and user needs, which increases maintenance costs.

2fill in blank

medium

Complete the sentence to identify a key reason for maintenance cost.

Software Engineering

One main reason maintenance costs are high is because software must adapt to [1] environments.

Drag options to blanks, or click blank then click option'

Achanging

Bunchanging

Csimple

Dstatic

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'unchanging' because environments are stable.

Software must adapt to changing environments like new hardware, operating systems, or user requirements, which increases maintenance effort and cost.

3fill in blank

hard

Fix the error in the sentence explaining maintenance cost.

Software Engineering

Maintenance is costly because software [1] are often poorly documented.

Drag options to blanks, or click blank then click option'

Asystems

Bmodules

Cdocuments

Dcode

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'documents' which is redundant.

Software code is often poorly documented, making maintenance harder and more expensive.

4fill in blank

hard

Fill both blanks to complete the explanation about maintenance challenges.

Software Engineering

Maintenance requires [1] to understand the [2] of existing software.

Drag options to blanks, or click blank then click option'

Atime

Bmoney

Cstructure

Ddesign

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'money' for the first blank instead of 'time'.

Maintenance requires time to understand the design of existing software, which adds to cost.

5fill in blank

hard

Fill all three blanks to explain why maintenance consumes most software cost.

Software Engineering

Maintenance involves [1] bugs, [2] to new requirements, and [3] outdated technology.

Drag options to blanks, or click blank then click option'

Afixing

Badapting

Cupgrading

Dignoring

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'ignoring' which is not a maintenance activity.

Maintenance involves fixing bugs, adapting to new requirements, and upgrading outdated technology, all of which increase costs.

Practice

1. Why does software maintenance usually consume most of the total software cost?

easy

A. Because software needs continuous fixing, updating, and improving after release

B. Because initial development is always very cheap

C. Because software is rarely used after release

D. Because maintenance requires no planning or effort

Solution

1. Step 1: Understand what maintenance involves

   Maintenance includes fixing bugs, updating features, and improving software after it is released.

2. Step 2: Recognize ongoing effort and cost

   Since software is used over time, continuous work is needed, which costs more than initial development.

3. Final Answer:

   Because software needs continuous fixing, updating, and improving after release -> Option A

4. Quick Check:

   Maintenance = ongoing updates and fixes [OK]

Hint: Maintenance means ongoing work after release, so it costs more [OK]

Common Mistakes:

• Thinking initial development is the most expensive
• Assuming software is static after release
• Ignoring updates and bug fixes

2. Which of the following best describes software maintenance?

easy

A. Writing the first version of the software

B. Testing software before release

C. Fixing bugs, updating features, and improving software after release

D. Designing the software architecture

Solution

1. Step 1: Identify maintenance activities

   Maintenance involves activities after release like fixing bugs and updating features.

2. Step 2: Differentiate from development phases

   Writing first version, designing, and testing happen before release, not during maintenance.

3. Final Answer:

   Fixing bugs, updating features, and improving software after release -> Option C

4. Quick Check:

   Maintenance = post-release fixes and updates [OK]

Hint: Maintenance happens after release, not before [OK]

Common Mistakes:

• Confusing maintenance with initial development
• Thinking testing is maintenance
• Mixing design with maintenance

3. Consider this scenario: A software project spends 30% of its budget on initial development and 70% on maintenance. Why is this distribution common?

medium

A. Because software is discarded after initial release

B. Because initial development is usually very slow

C. Because maintenance is done only once

D. Because maintenance includes fixing unexpected bugs and adapting to new requirements

Solution

1. Step 1: Analyze maintenance tasks

   Maintenance covers fixing bugs found after release and adapting software to changing needs.

2. Step 2: Understand budget allocation

   Since maintenance is ongoing and unpredictable, it often requires more budget than initial development.

3. Final Answer:

   Because maintenance includes fixing unexpected bugs and adapting to new requirements -> Option D

4. Quick Check:

   Maintenance = fixes + adaptation = higher cost [OK]

Hint: Maintenance covers surprises and changes, so costs add up [OK]

Common Mistakes:

• Assuming maintenance is a one-time task
• Thinking initial development is always slow
• Believing software is discarded after release

4. A team notices their software maintenance costs are very high. Which of these is a likely cause they should fix?

medium

A. Using too many automated tests

B. Poor initial design and coding causing many bugs

C. Writing very clear and simple code

D. Planning maintenance tasks carefully

Solution

1. Step 1: Identify causes of high maintenance cost

   Poor design and coding lead to many bugs and harder updates, increasing maintenance effort.

2. Step 2: Evaluate other options

   Automated tests, clear code, and planning reduce maintenance cost, so they are not causes.

3. Final Answer:

   Poor initial design and coding causing many bugs -> Option B

4. Quick Check:

   Bad design = more bugs = higher maintenance cost [OK]

Hint: Bad design causes bugs, raising maintenance costs [OK]

Common Mistakes:

• Thinking automated tests increase maintenance cost
• Believing clear code causes more maintenance
• Ignoring the role of planning

5. A company wants to reduce its software maintenance costs. Which combined approach will best achieve this?

hard

A. Write clear code, plan for future changes, and test thoroughly before release

B. Skip testing to save time and fix bugs later during maintenance

C. Ignore user feedback to avoid frequent updates

D. Use complex code to impress clients, even if hard to maintain

Solution

1. Step 1: Identify best practices to reduce maintenance

   Clear code, planning for changes, and thorough testing reduce bugs and ease future updates.

2. Step 2: Evaluate poor practices

   Skipping tests, ignoring feedback, and writing complex code increase maintenance effort and cost.

3. Final Answer:

   Write clear code, plan for future changes, and test thoroughly before release -> Option A

4. Quick Check:

   Good planning + clear code + testing = lower maintenance cost [OK]

Hint: Plan, code clearly, and test well to cut maintenance costs [OK]

Common Mistakes:

• Skipping testing to save time
• Ignoring user feedback
• Writing complex, hard-to-maintain code