ISTQB CTFL-v4.0 Free Practice Questions — Page 2

Q: If you are using test results to learn more about the software and are then creating additional tests based on those results, what type of testing are you doing?

A. Exploratory. Exploratory testing is a simultaneous process of learning, test design, and test execution where results guide further testing. Option B (decision-based) is not a standard ISTQB technique name. Option C (checklist-based) uses predefined checklists, not dynamic results. Option D (control flow) is a white-box technique, not experience-based dynamic learning.

Q: You are working on calculating the estimation for a project. You have been given the following numbers by your manager, who is considered to be an expert in estimation: Optimistic = 35 days - Likely = 40 days - Pessimistic = 65 days - Apply the three-point estimation technique, what is the proper expression of the final estimate?

D. E is 43.3 days, SD = 5. The three-point estimation formula is E = (O + 4M + P) / 6 and SD = (P - O) / 6. E = (35 + 4×40 + 65) / 6 = (35 + 160 + 65) / 6 = 260 / 6 = 43.3 days. SD = (65 - 35) / 6 = 30 / 6 = 5. Option A has wrong SD. Option B uses only the likely estimate. Option C has incorrect formula application.

Q: Which black-box technique should be used to verify different responses of the system, depending on its current conditions or previous history?

C. State transition testing. State transition testing is specifically designed to verify system behavior based on its current state or history of previous transitions. Option A (use case testing) focuses on user interaction flows. Option B (decision table) covers combinations of conditions, not state history. Option D (equivalence partitioning) groups input values but does not model state-dependent behavior.

Q: You have been given the following story: As a help desk worker - I want to enter a caller’s birth date So the system can display the caller’s account information As a team, you have developed the following table of acceptance criteria: 010.png You have developed the following test cases and will execute them in the specified order: 1. Enter a valid date and verify that the account retrieved matches the birth date entered. 2. Enter an invalid date and verify that the error indicates the date is invalid. 3. Verify that the date prompt is already formatted for the date with xx/xx/xx format. 4. Enter a valid date and verify that two pages of account information are readable. 5. Enter a valid date and verify that the response occurs within 2 seconds when the system is under an average load. What is incorrect about this approach?

D. The test cases do not indicate the expected result. Looking at the test cases listed, none of them explicitly state the expected result as part of the test case definition — they say "verify that" but this is a test action, not a formally documented expected result. Option A is wrong; there is no security test case related to access control listed. Option B is incorrect; SQL statements are not required for all test cases. Option C is wrong; the order (positive, negative, usability, non-functional) is reasonable.

Question 1

Which of the following is an advantage of the whole team approach?

Answer

Show Answer & Explanation

Correct Answer: A. Any person in the team with the right skills can perform any task

The whole team approach means any team member with the right skills can perform any needed task, promoting flexibility. Option B contradicts the whole team approach — tasks are shared, not individually owned. Option C is incorrect; quality is a shared responsibility in whole team approach, not owned exclusively by testers. Option D is wrong — business representatives are included, not excluded, in the whole team approach.

Question 2

If you are using test results to learn more about the software and are then creating additional tests based on those results, what type of testing are you doing?

Answer

Show Answer & Explanation

Correct Answer: A. Exploratory

Exploratory testing is a simultaneous process of learning, test design, and test execution where results guide further testing. Option B (decision-based) is not a standard ISTQB technique name. Option C (checklist-based) uses predefined checklists, not dynamic results. Option D (control flow) is a white-box technique, not experience-based dynamic learning.

Question 3

You are working on calculating the estimation for a project. You have been given the following numbers by your manager, who is considered to be an expert in estimation: Optimistic = 35 days - Likely = 40 days - Pessimistic = 65 days - Apply the three-point estimation technique, what is the proper expression of the final estimate?

Answer

Show Answer & Explanation

Correct Answer: D. E is 43.3 days, SD = 5

The three-point estimation formula is E = (O + 4M + P) / 6 and SD = (P - O) / 6. E = (35 + 4×40 + 65) / 6 = (35 + 160 + 65) / 6 = 260 / 6 = 43.3 days. SD = (65 - 35) / 6 = 30 / 6 = 5. Option A has wrong SD. Option B uses only the likely estimate. Option C has incorrect formula application.

Question 4

Which black-box technique should be used to verify different responses of the system, depending on its current conditions or previous history?

Answer

Show Answer & Explanation

Correct Answer: C. State transition testing

State transition testing is specifically designed to verify system behavior based on its current state or history of previous transitions. Option A (use case testing) focuses on user interaction flows. Option B (decision table) covers combinations of conditions, not state history. Option D (equivalence partitioning) groups input values but does not model state-dependent behavior.

Question 5

You have been given the following story: As a help desk worker - I want to enter a caller’s birth date So the system can display the caller’s account information As a team, you have developed the following table of acceptance criteria: 010.png You have developed the following test cases and will execute them in the specified order: 1. Enter a valid date and verify that the account retrieved matches the birth date entered. 2. Enter an invalid date and verify that the error indicates the date is invalid. 3. Verify that the date prompt is already formatted for the date with xx/xx/xx format. 4. Enter a valid date and verify that two pages of account information are readable. 5. Enter a valid date and verify that the response occurs within 2 seconds when the system is under an average load. What is incorrect about this approach?

Answer

Show Answer & Explanation

Correct Answer: D. The test cases do not indicate the expected result

Looking at the test cases listed, none of them explicitly state the expected result as part of the test case definition — they say "verify that" but this is a test action, not a formally documented expected result. Option A is wrong; there is no security test case related to access control listed. Option B is incorrect; SQL statements are not required for all test cases. Option C is wrong; the order (positive, negative, usability, non-functional) is reasonable.

ISTQB CTFL-v4.0 Free Practice Questions — Page 2

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