TS Quality Assurance & Compliance Standards 3 — Questions and Answers
Question 1: Which metric best measures the effectiveness of a QA process in preventing defects from reaching production?
- Defect detection percentage (DDP) (Correct answer)
- Mean time to repair (MTTR)
- Test case execution rate
- Requirement volatility index
Correct answer: Defect detection percentage (DDP)
Defect Detection Percentage (DDP) measures the ratio of defects found during testing versus total defects including those found in production, directly reflecting QA effectiveness.
Question 2: A test manager is preparing for a CMMI Level 3 appraisal. Which process area is most directly related to test planning?
- Causal Analysis and Resolution
- Validation
- Project Planning (Correct answer)
- Supplier Agreement Management
Correct answer: Project Planning
Project Planning in CMMI Level 3 encompasses test planning activities, including estimating effort, defining milestones, and scheduling test activities.
Question 3: What is the primary goal of conducting an independent quality audit of a test process?
- To identify which testers performed poorly
- To objectively assess compliance with defined processes and standards (Correct answer)
- To replace the need for peer reviews
- To generate test execution metrics automatically
Correct answer: To objectively assess compliance with defined processes and standards
Independent quality audits provide objective, unbiased assessments of whether testing processes adhere to defined standards and organizational procedures.
Question 4: In risk-based testing, what determines the priority order for executing test cases?
- Test case creation date
- Tester's personal judgment
- Combination of likelihood of failure and impact of failure (Correct answer)
- Alphabetical order of feature names
Correct answer: Combination of likelihood of failure and impact of failure
Risk-based testing prioritizes test cases by multiplying the probability of a defect occurring by the business impact if that defect reaches production.
Question 5: Which statement correctly describes the role of an exit criterion in QA compliance?
- It defines when a new test phase can begin
- It specifies conditions that must be met before testing can be declared complete (Correct answer)
- It sets the maximum number of open defects allowed at any time
- It determines which team members leave the project
Correct answer: It specifies conditions that must be met before testing can be declared complete
Exit criteria define the measurable conditions (e.g., defect density thresholds, test coverage levels) that must be satisfied before formally ending a test phase.
Question 6: Under IEC 61508 (functional safety), what is a Safety Integrity Level (SIL) used to express?
- The number of safety engineers on a project
- The required probability of failure on demand for a safety function (Correct answer)
- The total lines of safety-critical code
- The minimum test coverage percentage required
Correct answer: The required probability of failure on demand for a safety function
SIL (Safety Integrity Level 1–4) quantifies the required reliability of a safety function by expressing the acceptable probability of dangerous failure on demand.
Question 7: A test specialist is reviewing a test completion report. Which element is most critical for demonstrating regulatory compliance?
- List of testers assigned to the project
- Evidence that all planned tests were executed and results were recorded (Correct answer)
- Breakdown of hours spent per test phase
- Comparison of actual vs. estimated test velocity
Correct answer: Evidence that all planned tests were executed and results were recorded
Regulatory compliance requires documented evidence showing that all planned test activities were executed and outcomes were formally recorded in accordance with the test plan.
TS Quality Assurance & Compliance Standards 3
Which metric best measures the effectiveness of a QA process in preventing defects from reaching production?