System Attributes: Maintainability vs. Survivability
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Questions and Answers

Which dimension of dependability reflects the extent to which the system can deliver services while under hostile attack?

  • Availability
  • Reliability
  • Security
  • Survivability (correct)

Which property of dependability ensures that the system can be adapted to new requirements?

  • Repairability
  • Error tolerance
  • Survivability
  • Maintainability (correct)

Which of the following is not a principal dimension of dependability?

  • Survivability
  • Efficiency (correct)
  • Availability
  • Reliability

Which property of dependability deals with user input errors?

<p>Error tolerance (B)</p> Signup and view all the answers

Which dimension of dependability ensures that the system can be repaired in the event of a failure?

<p>Repairability (B)</p> Signup and view all the answers

Which attribute of a system is concerned with its ability to continue delivering services despite deliberate or accidental attacks?

<p>Survivability (A)</p> Signup and view all the answers

Which term is used to describe the ability of a system to continue in operation in spite of component failures?

<p>Resilience (A)</p> Signup and view all the answers

Which attribute involves the ease of repairing the system after a failure or changing the system to include new features?

<p>Maintainability (A)</p> Signup and view all the answers

Which system attribute is increasingly important for distributed systems whose security can be compromised?

<p>Survivability (C)</p> Signup and view all the answers

Which term describes the probability that a system, at a point in time, will be operational and able to deliver the requested services?

<p>Availability (C)</p> Signup and view all the answers

Which term describes the probability of failure-free system operation over a specified time in a given environment for a given purpose?

<p>Reliability (D)</p> Signup and view all the answers

Which type of critical system results in high economic losses upon failure?

<p>Business-critical systems (D)</p> Signup and view all the answers

What is the primary concern for critical systems when it comes to their properties?

<p>Dependability (D)</p> Signup and view all the answers

What is the primary cause of system failures currently?

<p>Operational failure (B)</p> Signup and view all the answers

Which critical system has the potential to result in loss of life or injury upon failure?

<p>Safety-critical systems (D)</p> Signup and view all the answers

What does dependability of a system reflect?

<p>The user's degree of trust in the system (C)</p> Signup and view all the answers

What type of failure occurs due to errors in specification, design, or implementation of software?

<p>Software failure (D)</p> Signup and view all the answers

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