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Exam CTFL v4.0 topic 1 question 50 discussion

Actual exam question from ISTQB's CTFL v4.0
Question #: 50
Topic #: 1
[All CTFL v4.0 Questions]

A requirement specifies that a certain identifier (ID) must be between 5 and 10 characters long, must contain only alphanumeric characters, and its first character must be a letter. As a tester, you want to apply one-dimensional equivalence partitioning to test this ID. This means that you have to apply equivalence partitioning individually: to the length of the ID, the type of characters contained within the ID, and the type of the first character of the ID. What is the number of partitions to cover?

  • A. 7
  • B. 6
  • C. 5
  • D. 3
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Suggested Answer: A 🗳️

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cb56e21
3 weeks, 4 days ago
Selected Answer: U
Para lograr una cobertura del 100% con esta técnica, los casos de prueba deben ejercer todas las particiones identificadas (incluidas las particiones inválidas) cubriendo cada partición al menos una vez. 1. Un ID donde su primer carácter sea una letra (partición válida) 2. Un ID donde su primer carácter no sea una letra (partición inválida) 3. Un ID que contenga solo caracteres alfanuméricos (partición válida) 4. Un ID que no solo contenga caracteres alfanuméricos (partición inválida) 5. Un ID que tenga entre 5 y 10 caracteres (partición válida) 6. Un ID que tenga menos de 5 caracteres (partición inválida) 7. Un ID que tenga más de 10 caracteres (partición inválida) Por lo tanto, la respuesta correcta es A.
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