X.800 Security Services: Authentication and Access Control

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Questions and Answers

Which security service ensures that only authorized entities can access a resource?

  • Access Control (correct)
  • Nonrepudiation
  • Data Confidentiality
  • Authentication

Which security service provides protection against denial of involvement in a communication by one of the parties?

  • Data Integrity
  • Authentication
  • Nonrepudiation (correct)
  • Data Confidentiality

Which security mechanism is often used to provide multiple security services?

  • Digital signatures (correct)
  • Physical locks
  • Firewalls
  • Biometric authentication

Which security service ensures that data received is exactly as sent by an authorized entity?

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

Which security service protects data from unauthorized disclosure?

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

Which security service provides assurance that the communicating entity is the one claimed?

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

What is the generic name for the collection of tools designed to protect data and thwart hackers?

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

Which term refers to the measures taken to ensure that data is not modified or tampered with during transmission?

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

What is the term for the protection of data from unauthorized access by controlling who can access what information?

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

Which security service ensures that a sender cannot deny the transmission of a message at a later stage?

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

Which type of security mechanism involves automated tools designed to protect files and stored information?

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

In network security, what term is used for measures taken to protect data during their transmission?

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

What is the purpose of access control in security services?

<p>To prevent unauthorized use of resources (D)</p> Signup and view all the answers

Which of the following is NOT a type of data confidentiality service?

<p>Selective-field connection integrity (C)</p> Signup and view all the answers

What is the purpose of data integrity services?

<p>To ensure that data received is exactly as sent by an authorized entity (B)</p> Signup and view all the answers

Which of the following is NOT a type of nonrepudiation service?

<p>Nonrepudiation, confidentiality (A)</p> Signup and view all the answers

Which of the following is an example of a specific security mechanism?

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

What is the purpose of traffic-flow confidentiality?

<p>To protect the pattern of communication traffic from analysis (C)</p> Signup and view all the answers

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