CTFL-AcT Exam Dumps : ISTQB Certified Tester - Acceptance Testing (CT-AcT)

Exploratory testing is an unscripted, experience-based testing technique where the tester learns about the system, designs tests, and executes them simultaneously. It is especially effective in Agile environments, where rapid feedback and creative exploration are valuable.

Option D is the least likely action because scripting automated test scripts is a structured activity that typically occurs after exploratory sessions or during more formal test phases. Exploratory testing emphasizes manual exploration, not automation scripting.

Other options:

A is part of the core purpose of exploratory testing — discovering the product.

B is relevant — defining a charter and discussing it with stakeholders (like the Product Owner) helps guide the exploratory session.

C is also relevant — results of exploratory tests should be documented and communicated.

Answer: D. Scripting of the automated test scripts

ISO/IEC 25010 defines two key quality models:

Product Quality Model (e.g., Usability, Security, Portability)

Quality in Use Model — which includes characteristics of the user’s experience when interacting with the product in a real-world context.

The four main characteristics of the Quality in Use model are:

Effectiveness

Efficiency

Satisfaction

Freedom from risk

Option A — Efficiency is one of the key Quality in Use characteristics, as it refers to the resources used to achieve goals with accuracy and completeness.

Other options:

B (Usability), C (Compatibility), and D (Portability) are characteristics of the Product Quality Model, not of Quality in Use.

Therefore, the correct answer, as per ISO 25010:2011, is:

Answer: A. Efficiency

Beta testing is a form of external user acceptance testing where real users test the product in their environment before the official release. It helps identify issues that may not have been caught in internal testing and gather user feedback on functionality, usability, and performance in real-world conditions.

Option C is correct — the core goal of beta testing is to obtain user feedback in their actual usage context, providing insight into how the system performs outside of controlled environments.

Other options:

A: Test charters are used in exploratory testing, not typically in beta testing.

B: Incorrect — beta testing is not tied to the timing of user story development in Agile.

D: Incorrect — beta testing is performed by end users, not by internal team members like developers or business analysts.

Answer: C. Beta testing aims to obtain feedback from users in their context of use