A static analysis tool reports a 'dead store' for the variable `temp` in the following code snippet: `temp = compute(); temp = computeAgain(); return temp;`. What does this report indicate?

The variable `temp` is not defined on all paths

The variable `temp` is used in a way that causes a type error

The first assignment to `temp` is never used before being overwritten

The variable `temp` is used before it is defined

A test analyst is using a dynamic data flow analysis tool that instruments the code and logs every definition and use of variables. After running a test suite, the tool reports that a variable `status` is used without being defined on a specific path. What does this indicate?

The test suite executed a path where `status` was not initialized

The test suite did not execute the path where `status` is defined

The tool has a bug because dynamic analysis cannot detect such anomalies

The variable `status` is defined but never used

What does the 'all-defs' data flow coverage criterion require?

Every definition of every variable must be covered by at least one test case

Every use of every variable must be covered

Every statement must be executed

Every path from a definition to a use must be covered

A developer is reviewing a C# method that calculates a discount. The code declares `decimal discountRate;` and then later uses `discountRate` in a calculation, but the variable is never assigned a value before that use. The developer runs a static analysis tool on the code. Which data flow anomaly will the tool most likely report?

Uninitialized variable (use before definition)

Certified Tester Advanced Level Technical Test Analyst

Domain 3Objective 3

Data Flow Analysis CTAL-TTA Practice Questions (Page 4)

Part of the Domain 3: Static and Dynamic Analysis domain, which makes up ~21% of our current practice bank. ISTQB does not publish an official question count, but from its 120-minute exam (~50–80 total, ~11–17 in this domain), expect 1–2 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

10concepts

Questions 16–20

16application · medium
A static analysis tool reports a 'dead store' for the variable `temp` in the following code snippet: `temp = compute(); temp = computeAgain(); return temp;`. What does this report indicate?
Select an answer first
17application · medium
A test analyst is using a dynamic data flow analysis tool that instruments the code and logs every definition and use of variables. After running a test suite, the tool reports that a variable `status` is used without being defined on a specific path. What does this indicate?
Select an answer first
18foundation · easy
What does the 'all-defs' data flow coverage criterion require?
Select an answer first
19application · medium
A developer is reviewing a C# method that calculates a discount. The code declares `decimal discountRate;` and then later uses `discountRate` in a calculation, but the variable is never assigned a value before that use. The developer runs a static analysis tool on the code. Which data flow anomaly will the tool most likely report?
Select an answer first
20foundation · easy
Which data flow coverage criterion is the strongest (requires the most test cases)?
Select an answer first

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Data Flow Analysis CTAL-TTA Practice Questions (Page 4)

Questions 16–20

A static analysis tool reports a 'dead store' for the variable `temp` in the following code snippet: `temp = compute(); temp = computeAgain(); return temp;`. What does this report indicate?

A test analyst is using a dynamic data flow analysis tool that instruments the code and logs every definition and use of variables. After running a test suite, the tool reports that a variable `status` is used without being defined on a specific path. What does this indicate?

What does the 'all-defs' data flow coverage criterion require?

Which data flow coverage criterion is the strongest (requires the most test cases)?

Keep studying — Domain 3: Static and Dynamic Analysis