Exam ISTQB-CTFL Topic 1 Question 343 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam
Question #: 343
Topic #: 1
A class grade application for instructors assigns letter grades based on students' numerical grades.
The letter grades for different numerical grades should be:
Above 89, up to 100 - A
Above 79, up to 89 * B
Above 69, up to 79 * C
Above 59, up to 69 - D
Below 60 - F
Which of the following sets of test inputs would achieve the relatively highest equivalence partition coverage?

Suggested Answer: D Vote an answer

The set of test inputs that achieve the relatively highest equivalence partition coverage for grading students is option D: 69, 79, 80, 89, 90. This set effectively tests the boundaries between each grade category, ensuring that the grading system accurately transitions from one grade to another at the correct thresholds (ISTQB Main Web).
Reference:
ISTQBCertified Tester Foundation Level Syllabus v4.0: ISTQB CTFL Syllabus v4.0 PDF

by Wilbur at Jan 29, 2026, 08:29 PM

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