CTAL-TM Exam Dumps : Certified Tester Advanced Level Test Management (CTAL-TM) v3.0

Definition of Tool Lifecycle Stages:

Acquisition:The tool is selected and procured.

Support:Maintenance and updates are provided to ensure ongoing usability.

Evolution:The tool is upgraded or adapted for new needs.

Retirement:The tool is decommissioned when no longer useful.

Evaluation of Options:

A. Acquisition Support Evolution Retirement:

Correct. This sequence reflects the natural progression of a tool lifecycle.

B. Acquisition Evolution Support Retirement:

Incorrect. Support should occur before evolution as maintenance ensures stability before upgrades.

C. Evolution Acquisition Retirement Support:

Incorrect. Evolution cannot occur before acquisition.

D. Evolution Support Acquisition Retirement:

Incorrect. Acquisition must come first.

Syllabus Alignment:

ISTQB highlights the lifecycle stages of tools in test environments as starting with acquisition and ending with retirement (TM-1.6.4).

Cost of Quality Analysis:

The given table lists costs for defect prevention, appraisal, internal failure, and external failure.

Defect prevention cost is $50,000, while costs for appraisal, internal failures, and external failures are $250,000, $200,000, and $200,000, respectively.

The combined cost of internal and external failures is significantly high compared to defect prevention costs.

Defect Detection and Prevention (DDP):

DDP measures the effectiveness of defect prevention activities and early detection mechanisms.

In this case, 1,000 defects were caught before release (appraisal) and 100 defects escaped to production.

DDP = (Defects found before release / Total defects) = 1000 / (1000 + 100) = 90.91%.

While this DDP is relatively high, the costs of appraisal and failures indicate that prevention strategies need more investment.

Key Cost Drivers:

High internal and external failure costs indicate inefficiencies in earlier stages of quality assurance.

Shifting investments from appraisal and failure costs towards defect prevention would reduce the overall cost of quality.

Evaluating Options:

Option A ("More testing needed because DDP < 90%") is invalid since DDP is above 90%.

Option C ("The cost of testing is justified") does not address the imbalance between high failure costs and low prevention spending.

Option D ("More effort on appraisal") contradicts the cost-benefit focus of investing in prevention.

Option B is correct because enhancing defect prevention strategies will reduce downstream costs.

References and Syllabus Alignment:

This conclusion aligns with the ISTQB Advanced Test Management syllabus section on "Cost of Quality" and strategies to optimize testing investments. Specifically, prevention is emphasized as more cost-effective than appraisal and failure management​​​.

Estimation Technique Selection:

Extrapolation uses historical data from similar projects to estimate effort for a new one.

Since the current upgrade is 10% larger than the previous one, extrapolation is the most straightforward method.

Evaluation of Options:

A(Function points) focuses on size estimation and is not specific to historical data.

C(Planning poker) andD(Three-point estimation) involve collaborative or probabilistic techniques, not a direct extrapolation.

Bis correct as it directly applies historical project data to estimate effort.

References and Syllabus Alignment:

Effort estimation techniques are covered under "Test Estimation" (TM-2.2.1) in the syllabus​​.