ISTQB CTAL-TTA 問題集

質問 1：
Consider the following fault attack:
* Force all possible incoming errors from the software/operating system interfaces to the application.
Which of the following is the kind of failure you are looking for when using this attack?
A. Application miscalculates total monthly balance due on credit cards.
B. Application crashes due to a lack of portability.
C. Application crashes when unsupported characters are pasted into an input field.
D. Application crashes when the network is unavailable.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Consider the following pseudocode segment:
set a = 1
while a < 12
display "this is loop", a
if a > 10 then
display "loop is > 10'
set a = 5
else
display "loop is < 11*
endif
end while
display "Final value of a is", a
Which of the following issues should be detected in the code review?
A. Loop termination is not achievable
B. Rounding errors on the loop counters could cause problems
C. Variables are used before they are initialized
D. Some of the code could be moved to re-usable functions
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 3：
You are a senior Technical Test Analyst on a new government project for the Air Force. The software you are testing is used to control the hydraulics for the landing gear for a supersonic, stealth aircraft. You are responsible for organizing the white-box testing that will be performed for this project.
Which of the following would be the most appropriate technique to apply in this situation?
A. Maximum condition / multiple decision coverage
B. Multiple condition coverage
C. Decision / condition coverage
D. Modified condition / decision coverage
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Below is pseudo-code which calculates a customer's cruise credits based on past cruise history:
PROGRAM CALC CRUISE CREDITS (CUST_ID) COUNT_CRUISES, CRUISE_CREDITS,
LOYALTY_RATING: INTEGER CRUISE_LENGTH, CRUISE_ACCOM_TYPE: VAR
* LOYALTY_RATING = 0
* COUNT_CRUISES = 0
* CRUISE_LENGTH = 0
* CRUISE_ACCOM_TYPE = 0
* BEGIN
* READ CUSTOMER'S CRUISE HISTORY TO OBTAIN COUNT OF CRUISES
* READ CRUISE_HISTORY (CUST_ID)
* WHILE COUNT_CRUISES != -1 DO
* READ CUSTOMER'S NEXT CRUISE
* READ NEXT_CRUISE
* IF CRUISE_ACCOM_TYPE = 3 THEN
* CRUISE_CREDITS = CRUISE_CREDITS + 5
* ELSE
* IF CRUISE_ACCOM_TYPE = 2 THEN
* CRUISE_CREDITS = CRUISE_CREDITS + 3
* ELSE
* CRUISE_CREDITS = CRUISE_CREDITS + 2
* ENDIF
* ENDIF
* COUNT_CRUISES = COUNT_CRUISES - 1
* ENDWHILE
* LOYALTY_RATING = CRUISE_CREDITS / COUNT_CRUISES
* WRITE ("CRUISE CREDIT TOTAL IS:")
* WRITE (CRUISE_CREDITS)
* END PROGRAM CALC CRUISE CREDITS
The code contains data flow anomalies on lines 14 and 27. Which examples of data flow anomalies can be found on these lines?
A. Line 14: Cruise_Credits is not assigned a value (defined) before being used Line 27: Loyalty_Rating is defined but not subsequently used
B. Line 14: Cruise_Credits is defined but not subsequently used Line 27: Loyalty_Rating is not assigned a value (defined) before being used
C. Line 14: Cruise_Credits is re-defined before being used Line 27: Loyalty_Rating is defined but not subsequently used
D. Line 14: Cruise_Credits should not be declared as an integer Line 27: Loyalty_Rating should be calculated within the While loop
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Which of the following defect types is NOT an example of a defect type typically found with API testing?
A. High architectural structural complexity
B. Timing problems
C. Data handling issues
D. Loss of transactions
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 6：
What BEST describes how tools can support the practice of Model-Based Testing (MBT)?
A. MBT tools can generate different levels of load on the system under test simulating predefined usage models for trial system
B. MBT tools can generate test cases using a model of the system under test, but they cannot reduce the very large number of possible paths that can be generated in the model
C. MBT tools can help by generating a model of the system under test, based on the test results derived from both systematic and experience-based testing techniques
D. MBT tools can be used to generate large sets of distinct execution threads which can be saved and used as test cases
正解：B
解説: (Topexam メンバーにのみ表示されます)