CTFL_Syll2018 Exam Dumps : ISTQB Certified Tester Foundation Level (Syllabus 2018)

The test organization that has the highest level of independence is C. Independent test specialists for specific test types, such as usability, performance or certification test specialists. Test independence refers to the degree of separation between the tester and the developer or user of the system or component under test. Test independence can help to reduce bias and increase objectivity in testing. Independent test specialists are testers who have specialized skills and knowledge in specific test types or domains and who are not involved in the development or use of the system or component under test. Independent test specialists can provide more reliable and accurate results than testers who are part of the development team or user community. A detailed explanation of test independence can be found in [A Study Guide to the ISTQB® Foundation Level 2018 Syllabus], pages 9-10.

Boundary value analysis is a technique to test the values at the boundaries of an equivalence partition. In this case, the age variable has two equivalence partitions: less than 30 and greater than or equal to 30. The boundary values are 29 and 30. The expected result for age 29 is that the premium is increased by 1500, so the final value is 4000. The expected result for age 30 is that the premium remains unchanged at 2500. This is explained in the syllabus under section 4.3, "Black-box Test Techniques"1. References: Certified Tester Foundation Level (CTFL) Syllabus - ASTQB

For the code fragment given below, one test case is required for statement coverage and two test cases are required for branch coverage. Statement coverage requires that every executable statement in the code is executed at least once. Branch coverage requires that every possible outcome of each decision point in the code is executed at least once. The following table shows how to achieve statement and branch coverage for the code fragment:

Test Case

Input

Output

Statement Coverage

Branch Coverage

1

x = 3

y = 9

S1, S2, S3

T1 = true

2

x = 5

y = 25

S1, S2

T1 = false

As shown in the table, test case 1 covers all three statements (S1, S2, S3) in the code fragment, achieving 100% statement coverage. Test case 2 covers only two statements (S1, S2) in the code fragment, but it exercises a different outcome of the decision point T1 (if x < 4), achieving 100% branch coverage.