Question 1

Which statement is correct regarding the use of exploratory testing for safety critical systems? SELECT ONE OPTION

Options :

A : It should be used when black-box tests cannot be automated

B : It is not recommended, as manual black-box tests should be used instead

C : It is highly recommended for low risk levels only

Answer: C

Question 2

The developers have suggested test set A is adequate to test the program opposite:

When executing test set A through the program which statements are exercised?

Options :

A : All

B : All, but statement 22

C : All, but statement 27, 28 and 29

D : All, but statement 22, 27, 28 and 29

Answer: D

Question 3

Consider the simplified logic below for crediting money to a bank account.

Receive money and account number to be credited

IF account number is valid

IF customer account is active

Store current account balance as oldBalance

Credit money to account

IF oldBalance < zero

IF balance now >= zero

Set message "Overdraft cleared"

ELSE

Set message "A/c overdrawn"

ENDIF

ELSE

Set message = "You have more money"

ENDIF

IF account holder is VIP customer

Send message by email to customer

ENDIF

ELSE

Set message "A/c inactive"

Send message by email to supervisor

ENDIF

ELSE

Add 1 to count of invalid inputs

ENDIF

What percentage of decision testing coverage has been achieved by the following suite of test cases?

Test Case A - Account number valid, account is active, oldBalance = -100, balance now = +200, not a VIP

customer

Test Case B - Account number valid, account is active, oldBalance = -100, balance now = -50, is a VIP

customer

Options :

A : 40%

B : 60%

C : 70%

D : 80%

Answer: B

Question 4

A new system is being built to handle the message handling of financial transactions - this system is critical to the organization's finances. The code includes loops and decisions with several multiple conditions. The nature of the system means that tests are quite time-consuming to execute. Which of the following would be the BEST white box testing option for the new software?

Options :

A : Multiple Condition coverage

B : MC/DC coverage

C : Decision coverage

D : Statement coverage

Answer: B

Question 5

Consider the following code fragment

If (a>b) and (b>c) then

b = (a+c)/2

endif

Assume that in the following options, each of the three numbers in parenthesis represent the inputs for a

test case, where the first number represents variable “a”, the second number represents variable “b”, and

the third number represents variable “c”.

Which of the following gives a set of test case inputs that achieves 100?cision coverage for this

fragment of code with the minimum number of test cases?

Options :

A : (5, 3, 2)

B : (5, 3, 2); (5, 4, 0)

C : (5, 4, 0); (4, 5, 0)

D : (4, 5, 0); (5, 4, 5)

Answer: C

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