This online ISTQB practice exam (mock test) is designed to test your knowledge of Software Testing – white box testing techniques – questions with answers.
ISTQB Sample Exam - White Box Testing
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- Question 1 of 19
1. Question
Analyse the following highly simplified procedure:
Ask: “What type of ticket do you require, single or return?”
IF the customer wants ‘return’
Ask: “What rate, Standard or Cheap-day?”
IF the customer replies ‘Cheap-day’
Say: “That will be £11:20”
ELSE
Say: “That will be £19:50”
ENDIF
ELSE
Say: “That will be £9:75”
ENDIFNow decide the minimum number of tests that are needed to ensure that all the questions have been asked, all combinations have occurred and all replies given.
CorrectIncorrect - Question 2 of 19
2. Question
Which of the following statements is NOT correct?
CorrectIncorrect - Question 3 of 19
3. Question
Which of the following is NOT a white box technique?
CorrectIncorrect - Question 4 of 19
4. Question
An important benefit of code inspections is that they:
CorrectIncorrect - Question 5 of 19
5. Question
Given the following code, which statement is true about the minimum number of test cases required for full statement and branch coverage?
Read p
Read q
IF p+q > 100 THEN
Print “Large”
ENDIFIF p > 50 THEN
Print “p Large”
ENDIFCorrectIncorrect - Question 6 of 19
6. Question
Consider the following statements:
i. 100% statement coverage guarantees 100% branch coverage.
ii. 100% branch coverage guarantees 100% statement coverage.
iii. 100% branch coverage guarantees 100% decision coverage.
iv. 100% decision coverage guarantees 100% branch coverage.
v. 100% statement coverage guarantees 100% decision coverage.CorrectIncorrect - Question 7 of 19
7. Question
What can static analysis NOT find?
CorrectIncorrect - Question 8 of 19
8. Question
Which of the following techniques is NOT a black box technique?
CorrectIncorrect - Question 9 of 19
9. Question
If the pseudocode below were a programming language ,how many tests are required to achieve 100% statement coverage?
1. If x=3 then
2. Display_messageX;
3. If y=2 then
4. Display_messageY;
5. Else
6. Display_messageZ;
7. Else
8. Display_messageZ;CorrectIncorrect - Question 10 of 19
10. Question
Which of the following tools would you use to detect a memory leak?
CorrectIncorrect - Question 11 of 19
11. Question
Incorrect form of Logic coverage is:
CorrectIncorrect - Question 12 of 19
12. Question
Which of the following is the odd one out?
CorrectIncorrect - Question 13 of 19
13. Question
Given the Following program
IF X < Y THEN Statement 1; ELSE IF Y >= Z
THEN Statement 2;
ENDMcCabe’s Cyclomatic Complexity is :
CorrectIncorrect - Question 14 of 19
14. Question
How many test cases are necessary to cover all the possible sequences of statements (paths) for the following program fragment? Assume that the two conditions are independent of each other : –
…………
if (Condition 1)
then statement 1
else statement 2
fi
if (Condition 2)
then statement 3
fi
…………CorrectIncorrect - Question 15 of 19
15. Question
Given the following code, which statement is true about the minimum number of test cases required for full statement and branch coverage?
Read p
Read q
IF p+q > 100 THEN
Print “Large”
ENDIF
IF p > 50 THEN
Print “p Large”
ENDIFCorrectIncorrect - Question 16 of 19
16. Question
Code Coverage is used as a measure of what?
CorrectIncorrect - Question 17 of 19
17. Question
Statement Coverage will not check for the following:
CorrectIncorrect - Question 18 of 19
18. Question
Consider the following statements:
i. 100% statement coverage guarantees 100% branch coverage.
ii. 100% branch coverage guarantees 100% statement coverage.
iii. 100% branch coverage guarantees 100% decision coverage.
iv. 100% decision coverage guarantees 100% branch coverage.
v. 100% statement coverage guarantees 100% decision coverage.CorrectIncorrect - Question 19 of 19
19. Question
Unreachable code would best be found using:
CorrectIncorrect
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geetha says
Can any one explain please ISTQB – Sample Exam 2 (White Box Testing)
Que 5.Question
Given the following code, which statement is true about the minimum number of test cases required for full statement and branch coverage?
Read p
Read q
IF p+q > 100 THEN
Print “Large”
ENDIF
IF p > 50 THEN
Print “p Large”
ENDIF
the answer shows as 1statement and 2 branch
but the answer should be 1 statement and 3 branches. pleases explain to me
nishtha says
2 testcases are sufficint for brach coverage..
eg (1) p=40, q=60 [it will cover true condition for both IF STATEMENTS]
(2) p=10, q=5 [it will cover false condition for both IF STATEMENTS]
so everything is covered in 2 test cases
Rohit Khanna says
this is so simple…firstly make the flow chart and than solve it..
Rohit Khanna says
there is 1 statement coverage and 2 branch coverege.
we can see only two branch coverage because we should identify minmum no of test cases so dats why..branch coverage should be 2.
sudha says
Unreachable code would best be found using:
A) Static analysis tool (According to ISTQB syllabus)
raju says
yes
one statment is for statement coverage..
eg:p=60
& q=50
it covers all statments coverage..
brach coverage..
two testcases are sufficint for brach 2 testcases are sufficint for brach coverage..
eg (1) p=40, q=60 [it will cover true condition for both IF STATEMENTS]
(2) p=10, q=5 [it will cover false condition for both IF STATEMENTS]
so everything is covered in 2 test cases
f14testing says
Hi I can suggest a website which contains articles and will be helpful for learn Whitebox testing.It is http://www.F14testing.com.
Anirudh says
hi… how abt in case of P=60 and q=40?
colleen says
Hi, could someone explains Q14 , why the answer is 4 test cases as some other site said the answer is 2 test cases. Thanks 😉