Software Testing Question Bank (20-05-2023)

 

QUESTION BANK

 

Unit 1 part1

1. Explain different Phases of software project.
2. Define Quality assurance and quality control.
3. Differentiate between Quality assurance and quality control.
4. Differentiate between Verification and validation.
5. Explain different Principles of Testing.
6. What Is Bug Life Cycle In Software Testing, Different Phases of Defect Life Cycle.
7. Explain Software Testing Life Cycle (STLC).
8. Differentiate between smoke testing and sanity testing.
9. What are test deliverables? Explain.
10. What is regression testing? When should Regression testing be performed?
11. What is the difference between re-testing and regression testing?
12. What is requirement Traceability matrix In Software Testing? What are its types? Explain its advantages.
13. Define software Testing
14. Differentiate between testing and debugging.
15. Distinguish between fault and failure.

Unit 1 part2

1. Explain V model in software engineering. What are Principles of the V Model.?
2.  Differentiate between white box testing and black box testing.
3. Explain Static white box Testing.
4. Explain different types of Static white box Testing.
5. What is Desk checking ? Eplain Advantages and Disadvantages of Desk Checking.
6. what is Code Walkthrough in software testing? Explain.
7. Explain Advantages and Disadvantages of Fagan Inspection.
8. Explain Structural Testing.
9. What is Code Coverage Testing?
10. Explain Types of Code Coverage in software testing.
11. Explain Code Complexity Testing.
12. What is Cyclomatic complexity? Explain.
13. Explain different Steps in Determining Cyclomatic Complexity.
14. What is white box testing? What are Challenges in White Box Testing?
15. Explain Blackbox testing. What are different principles of black box testing?
16. What is requirement-based testing?
17. Differentiate between positive and negative testing.
18. What are boundary values? Explain Boundary value analysis with an example.
19. An input field takes the year of birth between 1900 and 2004 What are the boundary values for testing this field ?
20. Consider a simple program to classify a triangle. Its inputs is a triple of

positive integers (say x, y, z) and the date type for input parameters ensures

that these will be integers greater than 0 and less than or equal to 100. The

program output may be one of the following words:

[Scalene; Isosceles; Equilateral; Not a triangle]

Design the boundary value test cases.

21. Consider a program for determining the Previous date. Its input is a triple of

day, month and year with the values in the range

1 ≤ month ≤ 12

1 ≤ day ≤ 31

1900 ≤ year ≤ 2025

The possible outputs would be Previous date or invalid input date. Design the

boundary value test cases.

22. Explain decision table-based testing with an example.
23. Explain equivalence class partitioning.
24. explain graph-based testing methods.
25. What is compatibility testing? What are its types? when and why should perform compatibility testing?
26. Explain documentation Testing.
27. What are advantages of documentation testing.
28. Explain domain testing.
29. Explain exploratory testing?

30. Calculate cyclomatic complexity for the given code.

    IF A = 354

       THEN IF B > C

            THEN A = B

            ELSE A = C

       END IF

    END IF PRINT A

31. 
    

32. 
    

Unit 2:

1. What is integration testing? Explain its types.
2. Differentiate between integration testing and unit testing.
3. Explain Big bang integration with an example
4. What are advantages of big bang testing?
5. What are advantages and disadvantages of top-down integration testing?
6. Explain top-down integration testing
7. What are advantages and disadvantages of bottom up integration testing?
8. Explain bottom up integration testing
9. What are advantages and disadvantages of bi directional integration testing?
10. Explain bi directional integration testing
11. Differentiate between stub and drivers.
12. Explain scenario testing.
13. Why do we create test scenarios?
14. Explain use case scenario with an example.
15. Differentiate between test scenario and test case
16. What is defect bash in software engineering? Explain with an example
17. What are advantages of defect bash?

Unit 3:

1. Explain system testing with an example
2. Differentiate between system testing and acceptance testing.
3. Explain Alpha and beta testing.
4. Differentiate between Alpha and beta testing.
5. Differentiate between functional and non-functional requirements
6. Explain functional testing
7. Explain non-functional testing
8. what are different non-functional testing parameters.?
9. Differentiate between functional and non-functional testing
10. Explain acceptance testing

11. Classify the following as functional and non-functional testing.

    a. Verification that payroll system satisfies local tax laws.

    b. Testing of the screens for user friendliness.

    c. Performance qualification of product.

    d. Testing documentation of the product to match the product behavior.

Unit 4:

11. Explain performance testing
12. Differentiate between load testing and stress testing
13. Explain Regression testing
14. Differentiate between regression testing and retesting
15. Explain Internationalization testing
16. What is need of Internationalization testing?
17. Explain globalization testing
18. What are advantages of Internationalization testing?
19. Explain adhoc testing
20. What are different types of adhoc testing? explain.
21. Differentiate between buddy testing and pair testing
22. What is Monkey Testing?
23. What are advantages of adhoc testing?
24. What are disadvantages of adhoc testing?
25. Explain Exploratory testing
26. Differentiate between adhoc testing and Exploratory testing
27. What Is Iterative Testing?
28. What is the need of iterative testing?
29. What is agile testing? What are its advantages and best practices?
30. Explain principles of agile testing.
31. Explain Extreme programming.
32. Explain XP process
33. Explain Extreme testing
34. What is Error Seeding ?
35. Differentiate between Error Seeding and mutation testing.

Unit 5:

1. Differences between Procedural and Object-Oriented Programming
2. Why normal testing methods are not useful for object-oriented software?
3. Explain various approaches of object-oriented testing
4. Explain scenario-based object-oriented testing
5. Explain partition object-oriented testing
6. Explain fault based testing
7. Explain any two tools for testing object oriented software.
8. Explain interclass test case design
9. Explain Random Testing

SOftware Testing Question Bank

Question Bank 1:

A. Explain the "Pesticide paradox" in software testing and how to avoid it.

B. Differentiate between verification and validation in software testing.

C. Identify common challenges in integration testing and propose solutions for successful testing and project outcomes.

D. Determine the boundary values for an input field accepting numbers between 1 and 100, inclusive. Also, define the valid and invalid ranges for this field.

A. Describe the Software Testing Life Cycle (STLC) and its phases.

B. Compare white box testing and black box testing, including their strengths, weaknesses, and suitable situations for each approach.

C. Provide a brief explanation of static white box testing and structural white box testing.

Explain the characteristics of a good Software Requirements Specification (SRS).

What is the Software Crisis, and what are the solutions to address it?

Explain the different tasks involved in Requirement Engineering.

Explain the Rapid Application Development (RAD) model, its applications, and the advantages and disadvantages of using it.

Explain the Waterfall model, its applications, and the advantages and disadvantages of using this model.

Explain the V-model, its applications, and the advantages and disadvantages of using this model.

Solution 09

 Given: y = sin⁻¹(2x√(1-x²))

Using the chain rule with d/dx[sin⁻¹(u)] = 1/√(1-u²) · du/dx

Let u = 2x√(1-x²)

Step 1: Find du/dx using the product rule. u = 2x · √(1-x²)

du/dx = 2x · d/dx[√(1-x²)] + √(1-x²) · d/dx[2x]

For d/dx[√(1-x²)] = d/dx[(1-x²)^(1/2)] = (1/2)(1-x²)^(-1/2) · (-2x) = -x/√(1-x²)

So: du/dx = 2x · (-x/√(1-x²)) + √(1-x²) · 2 du/dx = -2x²/√(1-x²) + 2√(1-x²) du/dx = (-2x² + 2(1-x²))/√(1-x²) du/dx = (-2x² + 2 - 2x²)/√(1-x²) du/dx = (2 - 4x²)/√(1-x²)

Step 2: Find 1-u². u² = (2x√(1-x²))² = 4x²(1-x²) = 4x² - 4x⁴

1-u² = 1 - (4x² - 4x⁴) = 1 - 4x² + 4x⁴ = (1-2x²)²

Therefore: √(1-u²) = |1-2x²|

Step 3: Apply the chain rule. dy/dx = 1/√(1-u²) · du/dx dy/dx = 1/|1-2x²| · (2-4x²)/√(1-x²) dy/dx = (2-4x²)/(|1-2x²|√(1-x²)) dy/dx = 2(1-2x²)/(|1-2x²|√(1-x²))

Since we typically assume the domain where the derivative exists, and noting that 1-2x² can be positive or negative:

dy/dx = 2/√(1-x²) when 1-2x² > 0 (i.e., when |x| < 1/√2)

dy/dx = -2/√(1-x²) when 1-2x² < 0 (i.e., when |x| > 1/√2)

The most common simplified form is: dy/dx = ±2/√(1-x²)

solution 6 ,7 and 8

 6. If y = ln((1+x)/(1-x)), find dy/dx and simplify

Using the chain rule with ln(u) where u = (1+x)/(1-x):

dy/dx = 1/u · du/dx = (1-x)/(1+x) · du/dx

Find du/dx using the quotient rule: du/dx = [(1-x)(1) - (1+x)(-1)]/(1-x)² du/dx = [1-x + 1+x]/(1-x)² du/dx = 2/(1-x)²

Therefore: dy/dx = (1-x)/(1+x) · 2/(1-x)² dy/dx = 2/[(1+x)(1-x)] dy/dx = 2/(1-x²)

7. A function is given implicitly by x³ + y³ = 3xy. Find dy/dx

Differentiate both sides with respect to x: d/dx(x³ + y³) = d/dx(3xy)

Left side: 3x² + 3y² · dy/dx

Right side (using product rule): 3[x · dy/dx + y · 1] = 3x · dy/dx + 3y

Setting them equal: 3x² + 3y² · dy/dx = 3x · dy/dx + 3y

Collect terms with dy/dx: 3y² · dy/dx - 3x · dy/dx = 3y - 3x dy/dx(3y² - 3x) = 3(y - x) dy/dx = (y - x)/(y² - x)

8. If y = (x² + 1)^(tan⁻¹x), find dy/dx using logarithmic differentiation

Take the natural logarithm of both sides: ln y = ln[(x² + 1)^(tan⁻¹x)] ln y = tan⁻¹x · ln(x² + 1)

Differentiate both sides with respect to x: (1/y) · dy/dx = d/dx[tan⁻¹x · ln(x² + 1)]

Using the product rule on the right side: d/dx[tan⁻¹x · ln(x² + 1)] = tan⁻¹x · d/dx[ln(x² + 1)] + ln(x² + 1) · d/dx[tan⁻¹x]

= tan⁻¹x · (2x)/(x² + 1) + ln(x² + 1) · 1/(1 + x²)

= (2x tan⁻¹x)/(x² + 1) + ln(x² + 1)/(1 + x²)

Therefore: (1/y) · dy/dx = (2x tan⁻¹x + ln(x² + 1))/(x² + 1)

Multiply both sides by y = (x² + 1)^(tan⁻¹x):

dy/dx = (x² + 1)^(tan⁻¹x) · (2x tan⁻¹x + ln(x² + 1))/(x² + 1)

Solution 3, 4 and 5

 3. If y = tan⁻¹((1+x)/(1-x)), find dy/dx

Using the chain rule with the derivative of tan⁻¹(u) = 1/(1+u²) · du/dx

Let u = (1+x)/(1-x)

First, find du/dx using the quotient rule: du/dx = [(1-x)(1) - (1+x)(-1)]/(1-x)² du/dx = [1-x + 1+x]/(1-x)² du/dx = 2/(1-x)²

Now apply the chain rule: dy/dx = 1/(1 + ((1+x)/(1-x))²) · 2/(1-x)²

Simplify the denominator: 1 + ((1+x)/(1-x))² = [(1-x)² + (1+x)²]/(1-x)² = [1-2x+x² + 1+2x+x²]/(1-x)² = (2+2x²)/(1-x)² = 2(1+x²)/(1-x)²

Therefore: dy/dx = 1/(1+x²)

4. If x² + y² = 25, find dy/dx using implicit differentiation

Differentiate both sides with respect to x: d/dx(x² + y²) = d/dx(25) 2x + 2y(dy/dx) = 0

Solve for dy/dx: 2y(dy/dx) = -2x dy/dx = -x/y

5. If y = e^(sin x) · cos x, find dy/dx

Using the product rule: d/dx(uv) = u'v + uv'

Let u = e^(sin x) and v = cos x

Find u': u' = e^(sin x) · d/dx(sin x) = e^(sin x) · cos x

Find v': v' = -sin x

Apply the product rule: dy/dx = u'v + uv' dy/dx = e^(sin x) · cos x · cos x + e^(sin x) · (-sin x) dy/dx = e^(sin x) · cos²x - e^(sin x) · sin x dy/dx = e^(sin x)(cos²x - sin x)

solution 2

 To differentiate y = x^x, I need to use logarithmic differentiation since both the base and exponent contain x.

Given: y = x^x

Step 1: Take the natural logarithm of both sides. ln y = ln(x^x) ln y = x ln x

Step 2: Differentiate both sides with respect to x. d/dx(ln y) = d/dx(x ln x)

Step 3: Apply the chain rule on the left side and product rule on the right side. Left side: d/dx(ln y) = (1/y) · dy/dx

Right side: d/dx(x ln x) = x · d/dx(ln x) + ln x · d/dx(x) = x · (1/x) + ln x · 1 = 1 + ln x

Step 4: Set them equal. (1/y) · dy/dx = 1 + ln x

Step 5: Solve for dy/dx. dy/dx = y(1 + ln x)

Step 6: Substitute back y = x^x. dy/dx = x^x(1 + ln x)

Therefore: dy/dx = x^x(1 + ln x)

Note: This derivative is defined for x > 0, since we need x^x and ln x to be defined.

Solution 1

 To find the derivative of y = ln(sin x), I'll use the chain rule.

Given: y = ln(sin x)

Using the chain rule: dy/dx = d/dx[ln(sin x)]

The derivative of ln(u) is 1/u · du/dx, where u = sin x.

So: dy/dx = 1/(sin x) · d/dx(sin x)

Since d/dx(sin x) = cos x:

dy/dx = 1/(sin x) · cos x = cos x/sin x

Therefore: dy/dx = cot x

We can also write this as cos x/sin x, but cot x is the most simplified form.

Note: This derivative is defined wherever sin x ≠ 0, which means x ≠ nπ where n is any integer.

Solution Q. 10

 

Given the equation $x=e^{{\tan }^{-1}\left(\frac{y-x^2}{x^2}\right)}$, 

we need to find $\left(\frac{dy}{dx}\right)$ at $x=1$.

First, we take the natural logarithm of both sides:

$$\ln x={\tan }^{-1}\left(\frac{y-x^2}{x^2}\right)$$

Let $u=\frac{y-x^2}{x^2}$. Then the equation becomes:

$$\ln x={\tan }^{-1}(u)$$

Taking the tangent of both sides, we get:

$$u=\tan (\ln x)$$

Substituting back $u=\frac{y-x^2}{x^2}$, we have:

$$\frac{y-x^2}{x^2}=\tan (\ln x)$$

Solving for $y$:

$$y=x^2(1+\tan (\ln x))$$

Next, we differentiate $y$ with respect to $x$:

$$\frac{dy}{dx}=\frac{d}{dx}[x^2(1+\tan (\ln x))]$$

Using the product rule, we get:

$$\frac{dy}{dx}=2x(1+\tan (\ln x))+x^2({\sec }^2(\ln x)\cdot \frac{1}{x})$$

Simplifying the second term:

$$\frac{dy}{dx}=2x(1+\tan (\ln x))+x{\sec }^2(\ln x)$$

Evaluating at $x=1$:

• $\ln (1)=0$

• $\tan (0)=0$

• ${\sec }^2(0)=1$

Substituting these values:

$$\frac{dy}{dx}{\mid }_{x=1}=2\cdot 1\cdot (1+0)+1\cdot 1=2+1=3$$

Thus, the value of $\left(\frac{dy}{dx}\right)$ at $x=1$ is $\boxed{{\displaystyle 3}}$.

SImilarly find for other values of x.