ISTQB - International Software Testing Qualifications Board Testing Throughout the Lifecycle Questions and Answers

Question 1

In the context of a sequential software development lifecycle model, such as the V-model, when should test analysis and design for a specific test level ideally begin?

Accepted Answer

As soon as the development activities for the corresponding level are underway.

Answer

A fundamental principle of testing throughout the lifecycle is that for every development activity, there is a corresponding testing activity. Test analysis and design for a given test level should begin during the corresponding development activity, not after it is complete. For example, acceptance test design should start during the requirements definition phase.

Question 2

A project team is developing a large, complex system with stringent safety requirements. The development model is highly structured, with distinct phases for requirements, high-level design, detailed design, and coding. Which testing level corresponds directly to the high-level design (architectural design) phase in a V-model?

Accepted Answer

System Testing

Answer

In the V-model, System Testing is designed to verify the behavior of the whole system against the high-level design and requirements specification. Acceptance testing corresponds to the business requirements, integration testing to the detailed design, and component testing to the individual code units.

Question 3

Which of the following is a primary objective of Maintenance Testing?

Accepted Answer

To verify that modifications in an operational system have not introduced adverse side effects.

Answer

Maintenance testing is performed on an existing operational system when it is modified. A key objective is to perform regression testing to ensure that changes (like fixes or enhancements) have not negatively impacted unchanged parts of the system.

Question 4

The 'shift left' approach to testing primarily aims to:

Accepted Answer

Initiate testing activities earlier in the software development lifecycle.

Answer

The 'shift left' approach advocates for performing testing activities earlier (or 'left' on a typical project timeline) in the lifecycle. This involves practices like static testing of requirements and design, and developers performing more unit testing, to find defects when they are cheaper and easier to fix.

Question 5

A team is developing a mobile application using an iterative lifecycle model. A new feature has been added in the latest iteration. In addition to testing the new feature itself, what other crucial testing activity must be performed?

Accepted Answer

Regression testing of existing application features.

Answer

In iterative models, where the software changes frequently, regression testing is crucial to ensure that new features or changes have not broken previously working functionality. While other testing types are valuable, regression testing is essential to maintain the integrity of the existing product with each iteration.

ISTQB - International Software Testing Qualifications Board Practice Test

ISTQB - International Software Testing Qualifications Board Practice Test

ISTQB - International Software Testing Qualifications Board Testing Throughout the Lifecycle Questions and Answers