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ISTQB Exam CTAL-TTA Topic 1 Question 31 Discussion

Actual exam question for ISTQB's CTAL-TTA exam
Question #: 31
Topic #: 1
[All CTAL-TTA Questions]

A review of the following pseudo code is to be performed using a checklist:

Module Vowel Counter

Message: array of Characters

M, N: Integer

ACount, ECount, ICount, OCount, UCount: Integer

BEGIN

I=1

Read Nextchar

While Nextchar <> 'S'

DO

Message (I) = Nextchar

I = I+1

Read Nextchar

ENDWHILE

FOR M = 1 To I

DO

Print (Message(M))

IF Message (M) = 'E'

THEN

ECount = ECount + 1

ELSE

IF Message (M) = 'A'

THEN

ACount = ACount + 1

ELSE

IF Message (M) = 'I'

THEN

ICount = ICount + 1

ELSE

IF Message (M) = 'O'

THEN

OCount = OCount + 1

ELSE

IF Message (M) = 'U'

THEN

UCount = UCount + 1

ENDIF

ENDIF

ENDIF

ENDIF

ENDIF

ENDFOR

Print ('Message contains ' ACount + ECount + ICount + OCount + UCount ' vowels')

END

Which of the following checklist items would find code errors in this scenario?

A) Are all variables properly declared?

B) Are all loops, branches, and logic constructs complete, correct, and properly nested?

C) Are all cases covered in an IF-ELSEIF, including ELSE or DEFAULT clauses?

D) Are loop termination conditions obvious and invariably achievable?

E) Are there any redundant or unused variables?

Show Suggested Answer Hide Answer
Suggested Answer: A

Analysis:

The given pseudo code for the Vowel Counter module contains potential issues that can be identified using a checklist.

Checklist Items:

B . Are all loops, branches, and logic constructs complete, correct, and properly nested?:

This item will help identify errors in the structure and nesting of loops and conditional statements. Proper nesting and completeness are crucial for the code to execute as intended.

C . Are all cases covered in an IF-ELSEIF, including ELSE or DEFAULT clauses?:

This item ensures that all possible cases are accounted for in conditional statements, including a final ELSE clause to handle unexpected values. This is important to avoid logical errors where certain conditions are not handled.

Explanation of Incorrect Options:

A . Are all variables properly declared?:

While important, this item does not directly address the issues related to loop and conditional logic completeness and correctness.

D . Are loop termination conditions obvious and invariably achievable?:

This item focuses on ensuring that loops will always terminate correctly, but does not address the completeness and correctness of the nested logic.

E . Are there any redundant or unused variables?:

This item helps identify variables that are declared but not used, which is not directly relevant to the correctness of the logic constructs.


The ISTQB CTAL-TTA syllabus and standard code review practices emphasize the importance of checking for proper nesting and completeness of logic constructs to ensure reliable and maintainable code.

Sources:

ISTQB-CTAL-TTA Syllabus

General knowledge on code review and checklist practices.

Contribute your Thoughts:

Christiane
1 months ago
Is it just me, or does this pseudo-code look like a bad game of 'Guess the Vowel'? Let's hope the answer is not 'All of the Above'!
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Delsie
5 days ago
Let's hope the answer is not 'All of the Above' when reviewing this pseudo-code!
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Nieves
8 days ago
Yes, checking if all variables are properly declared and if there are any redundant variables is crucial.
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Royal
12 days ago
I think the checklist items A and E would be helpful in finding errors in this code.
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Catherin
15 days ago
I agree, this pseudo-code does seem like a guessing game. Hopefully, the errors are not too tricky to find.
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Sanjuana
1 months ago
Looks like the exam is trying to keep us on our toes with this one. Time to put on our debugging hats!
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Clorinda
22 days ago
Yes, and we should also make sure all cases are covered in the IF-ELSEIF statements.
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Terry
1 months ago
I think we need to check if all variables are properly declared.
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Shaunna
1 months ago
Hold on, did they really forget the 'ELSE' clause for the vowel counts? That's like a rookie mistake!
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Paris
1 months ago
Yeah, they definitely missed that part. It's important for accurate counting.
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Shaun
1 months ago
I know right! That's a major oversight.
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Alton
2 months ago
I believe checklist item C) c and d is also important. Ensuring all cases are covered and loop termination conditions are achievable is key to avoiding errors.
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Aja
2 months ago
I agree with Kate. Checking if all variables are properly declared and if all cases are covered in IF-ELSEIF statements is crucial.
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Tom
2 months ago
Hmm, I think I see a few issues with the variable declarations and loop termination conditions. This could be tricky.
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Tracie
16 days ago
I think we should focus on checking variables and loop termination conditions for errors.
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Alyce
20 days ago
Definitely, checking if all cases are covered in the IF-ELSEIF statements is crucial for error-free code.
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Trinidad
23 days ago
Yes, and we should also make sure the loop termination conditions are clear and achievable.
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Sanda
1 months ago
I agree, the variable declarations need to be checked. It's important for the code to run smoothly.
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Apolonia
2 months ago
Whoa, this pseudo-code is like a maze of 'IF-THEN-ELSE' statements! I hope the answer isn't a trick question.
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Audry
13 days ago
User 2
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Solange
1 months ago
User 1
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Jarvis
1 months ago
User 2
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Merrilee
1 months ago
User 1
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Kate
2 months ago
I think the checklist item A) b and c would find code errors in this scenario.
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