Skip to main content
Sign in Register
Question no. 92931

What is the definition of MTTF?

Select your answer for: What is the definition of MTTF?
Show answer

Answer: B. Mean time to failure

Explanation

MTTF stands for Mean Time To Failure, a standard reliability metric. It measures the average expected operating time between software system failures. Higher MTTF values indicate more dependable and robust software systems. Reliability engineering uses statistical metrics to quantify software dependability. MTTF is commonly applied to non-repairable systems or predicted failure intervals. Tracking failure times helps organizations meet strict quality and uptime service levels.

System administrators monitor MTTF to plan maintenance schedules and hardware upgrades. Enterprise clients often demand specific MTTF targets before purchasing software licenses. Improving code quality through rigorous testing directly increases the mean time to failure. Maximum time to failure represents an outlier peak rather than a statistical mean. Minimum time to failure measures worst-case scenarios rather than average reliability. Option D is incorrect because Mean Time To Failure is the established definition.

Topic
—
Difficulty
medium

Related questions

Q1. Which among these options is wrong ?

Select your answer for: Which among these options is wrong ?
Show answer

Answer: C. Computer science belongs to Software engineering

Software engineering is widely recognized as a specialized sub-discipline contained within broader computer science. Computer science encompasses theoretical foundations, algorithms, and hardware architecture far beyond...

Q2. What is a set of software elements treated as a single unit for SCM purposes?

Select your answer for: What is a set of software elements treated as a single unit for SCM purposes?
Show answer

Answer: A. Software Configuration Item

A Software Configuration Item represents a managed unit within configuration management processes. SCIs are uniquely identified and formally controlled throughout the software development lifecycle. Treating related soft...

Q3. Which option is excluded from standard change management processes?

Select your answer for: Which option is excluded from standard change management processes?
Show answer

Answer: D. None of the mentioned

All listed steps are fundamental components of standard change management procedures. Logging changes ensures traceability and accountability throughout the software lifecycle. Estimating impact and reviewing with stakeh...

Q4. What is the cause of software bugs and failures_____________________?

Select your answer for: What is the cause of software bugs and failures_____________________?
Show answer

Answer: C. Both Software companies and Developers

Software defects originate from multiple sources including organizational flaws and developer mistakes. Software companies establish faulty processes while individual developers introduce specific coding errors. Comprehe...

Q5. Which of these is not among the eight principles of the Software Engineering Code of Ethics and Professional Practice?

Select your answer for: Which of these is not among the eight principles of the Software Engineering Code of Ethics and Professional Practice?
Show answer

Answer: D. ENVIRONMENT

The environment is not listed as one of the fundamental ethical principles. Professional software engineering ethics focus primarily on human stakeholders and products. Environmental concerns are broad but omitted from t...

Q6. Which of the following terms characterizes testing?

Select your answer for: Which of the following terms characterizes testing?
Show answer

Answer: B. Evaluating deliverable to find errors

Testing involves evaluating software deliverables systematically to uncover hidden defects and errors. Executing programs under controlled conditions helps discover discrepancies between expected and actual results. Qual...