Computer Systems Security - Chapter 1 Introduction
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Questions and Answers

What is a passive attack in terms of network security?

  • Altering data stream
  • Modifying messages in transit
  • Obtaining message contents or monitoring traffic flows (correct)
  • Creating a false data stream

    • In the context of network security, what is an active attack characterized by?

  • Denial of service
  • Masquerade of one entity as another
  • Replay of previous messages
  • Modification of data stream (correct)

    • What is required when using the network security model for designing algorithms?

  • Developing secret information (keys) (correct)
  • Distributing and sharing public information
  • Implementing access control mechanisms
  • Creating a protocol for unauthorized access

    • Which of the following is a requirement when implementing the network access security model?

    <p>Selecting gatekeeper functions to identify users</p> Signup and view all the answers

    How do passive attacks differ from active attacks?

    <p>Passive attacks require altering data streams, while active attacks involve creating false streams.</p> Signup and view all the answers

    What role do trusted computer systems play in implementing the network access security model?

    <p>Enabling the implementation of the model</p> Signup and view all the answers

    Which action is NOT necessary when using the network security model for security services?

    <p>Developing methods for secure data transmission</p> Signup and view all the answers

    What differentiates active attacks from passive attacks in network security?

    <p>Active attacks require alteration of data streams, while passive attacks simply monitor traffic.</p> Signup and view all the answers

    What is a key function of gatekeepers in the network access security model?

    <p>Detecting and preventing unauthorized user accesses</p> Signup and view all the answers

    How does a denial of service attack differ from a passive attack?

    <p>A denial of service attack disrupts network availability by targeting resources, while a passive attack targets communication privacy.</p> Signup and view all the answers

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