ISQI ISTQB Certified Tester Foundation Level (CTFL) v4.0 Sample Questions:

1. You are testing a system that is used in motor vehicles to warn the driver of an obstacle when re- versing. Output is provided by a series of LED lights (green, yellow, and red), each illuminated based on clearly defined conditions.
The following summary describes the functionality:
- Object within 10 metres, green LED lit.
- Object within 5 metres, yellow LED lit.
- Object within 1 metre, red LED lit.
- Setting sensitivity mode to "ON" will result in only the red LED being lit when the object is within
1 metre.
The following decision table describes the rules associated with the functioning of this proximity warning system:

Which intended functionality is tested by Rule 5 in the decision table?

A) Object is within 5 metres of the vehicle and the sensitivity mode is switched "off", resulting in no LED being lit.
B) Object is within 5 metres of the vehicle and the sensitivity mode is switched "on", resulting in no LED being lit.
C) Object is within 5 metres of the vehicle and the sensitivity mode is switched "on", resulting in the yellow LED being lit.
D) Object is within 5 metres of the vehicle and the sensitivity mode is switched "off", resulting in the yellow LED being lit.

2. Scenario "Happy Tomatoes"
An intelligent application for agricultural use incorporates temperature sensors located at different points of an enclosure. The sensors measure and record the temperature at regular intervals and extract the statistical values for these measurements. These values include the average daily temperature.
A new variety of tomatoes is currently being grown and the"World Organization for Happy Tomatoes"has established temperature ranges related to vegetative development.
When the system establishes that the average temperature is within a specific range, it emits a value that will be used to monitor and control the crop.

Using the equivalence partitioning technique, identify the set of input values that provides the HIGHEST coverage.

A) {7,10,25,40}
B) {7,10,21,40}
C) {8,10,25,40}
D) {7,10,25,29}

3. Which of the following statements about the shift-left approach is FALSE?

A) The shift-left approach in testing is compatible with DevOps practices.
B) The shift-left approach can involve security vulnerabilities
C) The shift-left approach can only be implemented with test automation
D) The shift-left approach can be supported by static analysis tools.

4. Consider the following examples of risks identified in different software development projects:
[I]. The contrast color ratio for both normal text and large text of a website does not comply with the applicable accessibility guidelines, making it difficult for many users to read the content on the pages
[II]. A development vendor fails to deliver their software system on time, causing significant delays to system integration testing activities that have been planned as part of a development project for a system of systems
[III]. People in the test team do not have sufficient skills to automate tests at the test levels required by the test automation strategy which does not allow production of an effective regression test suite
[IV]. In a web application, data from untrusted sources is not subject to proper input validation, making the application vulnerable to several security attacks Which of the following statements is true?

A) [II], [III] and [IV] are product risks; [I] is a project risk
B) [IV] is a product risk; [I]. [II] and [III] are project risks
C) [I] and [IV] are product risks. [II] and [III] are project risks
D) [I] and [III] are product risks; [II] and [IV] are project risks

5. Following a risk-based testing approach you have designed 10 tests to cover a product risk with a high-risk level. You want to estimate, adopting the three-point test estimation technique, the test effort required to reduce the risk level to zero by executing those 10 tests. You made the following three initial estimates:
- most optimistic = 6 person hours
- most likely = 30 person hours
- most pessimistic = 54 person hours
Based only on the given information, which of the following answers about the three-point test estimation technique applied to this problem is true?

A) The final estimate is exactly 30 person hours because the technique uses the initial most likely estimate as the final estimate
B) The final estimate is between 22 person hours and 38 person hours
C) The final estimate is exactly 30 person hours because the technique uses the arithmetic mean of the three initial estimates as the final estimate
D) The final estimate is between 6 person hours and 54 person hours

Solutions: