CTAL-TTA Exam Dumps : Certified Tester Advanced Level Technical Test Analyst

Program tax check

Integer: tax_rate

real: tax%

BEGIN

tax% := 0

GET (tax_rate)

WHILE tax_rate > 0 loop

IF tax_rate > 3 THEN

tax_rate := 3

ENDIF

tax% := tax% + (tax_rate / 10)

tax_rate := tax_rate - 1

ENDLOOP

IF tax% > 0.6 THEN

print ("tax rate is high")

ELSEIF tax% < 0.1 THEN

print ("tax rate is zero")

ELSE

print ("tax rate is low")

ENDIF

END tax check

Explanation of Control Flow:

Initialization:

tax% := 0

Get Tax Rate:

GET (tax_rate)

While Loop:

Loop runs while tax_rate > 0.

Inside the loop:

If tax_rate > 3, set tax_rate to 3.

Update tax% by adding tax_rate / 10.

Decrement tax_rate by 1.

Post-Loop Condition Checks:

After the loop, check the value of tax%:

If tax% > 0.6, print "tax rate is high".

Else if tax% < 0.1, print "tax rate is zero".

Otherwise, print "tax rate is low".

Unreachable Code Analysis:

The ELSEIF tax% < 0.1 THEN condition (line 17) is unreachable.

In the loop, tax% is incremented by a minimum of 0.1 each time tax_rate is greater than 0.

Therefore, tax% cannot be less than 0.1 after the loop.

Conclusion:

Line 17 (ELSEIF tax% < 0.1 THEN) will never be true given the logic of the loop.

Statements about Maintainability Testing:

A. It should start as soon as the draft design documents are available for review.

True. Maintainability testing can begin early in the development lifecycle, starting with reviews of design documents to ensure that maintainability concerns are addressed from the outset.

B. An application can be considered maintainable when static analysis and code review defects have been fixed.

False. While fixing defects identified by static analysis and code reviews improves maintainability, other factors such as documentation, ease of making changes, and regression testing must also be considered.

C. It tests the regression impact of software or environmental changes to an operational system.

False. This describes regression testing more than maintainability testing, which focuses on the ease of modifying the system and maintaining its performance.

D. It can be performed during Operational Acceptance Testing by multiple departments.

True. Maintainability testing can be part of operational acceptance testing (OAT), where different departments ensure that the system can be maintained and operated effectively.

E. It can be performed during User Acceptance Testing to ensure business processes can be maintained.

False. User acceptance testing (UAT) focuses on verifying that the system meets business requirements and user needs, not specifically on maintainability.

Correct Answer:

B. a and d

References:

The ISTQB CTAL-TTA syllabus and standard testing practices emphasize the importance of maintainability testing early in the lifecycle and its role in operational acceptance testing.

Sources:

ISTQB-CTAL-TTA Syllabus

General knowledge on maintainability testing practices.

In the data flow analysis of the pseudocode, the variable output presents a potential anomaly. Initially, output is set to input1, but it may be overwritten if input2 is greater. The anomaly, specifically a 'definition-use' (du-path) issue, arises because there might be scenarios where output does not adequately reflect changes depending on the dynamic data flow influenced by the conditional. Proper testing and validation of such conditional structures are crucial to ensure that output consistently represents the largest of the two inputs as intended.