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

UX task analysis focuses on understanding how users perform their tasks in real-world contexts. It captures not only the sequence of actions but also the surrounding environment — including physical conditions (light, noise), devices used, interruptions, and constraints. These external or environmental conditions become vital inputs to UX design decisions, helping teams adapt interfaces and workflows to user realities.

Option C is correct because it emphasizes this key aspect of UX task analysis: capturing external conditions that influence usability and system interaction.

Other options:

A focuses on user profiling, not task analysis.

B refers to business process modeling, which is more strategic and less user-context specific.

D refers to benchmarking or inspiration analysis — useful for design ideation but not task analysis.

Answer: C. External conditions are considered as input for subsequent design steps.

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

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