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Questions and Answers
What is a security mechanism?
What is a security mechanism?
- A service that counteracts security attacks
- A communication service that enhances the security of data processing systems
- A device used to transfer information securely
- A process designed to detect, prevent, or recover from a security attack (correct)
Which of the following best defines a security attack?
Which of the following best defines a security attack?
- A communication service that counteracts security attacks
- A process designed to detect, prevent, or recover from a security attack
- An action that enhances the security of data processing systems
- An action that compromises the security of information owned by an organization (correct)
What is a security service?
What is a security service?
- A service that enhances the security of information transfers (correct)
- A process that enhances the security of data processing systems
- A device used to prevent security attacks
- A communication service that counteracts security attacks
How do security services counter security attacks?
How do security services counter security attacks?
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Which of the following is a passive attack?
Which of the following is a passive attack?
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What is the goal of a passive attack?
What is the goal of a passive attack?
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Which of the following is an active attack?
Which of the following is an active attack?
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Which of the following is NOT a category of active attacks?
Which of the following is NOT a category of active attacks?
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Study Notes
Security Mechanisms and Attacks
- A security mechanism is a system or process designed to prevent, detect, and respond to security threats.
Security Attacks
- A security attack is an intentional attempt to compromise the confidentiality, integrity, or availability of a resource.
- Security attacks can be classified into two categories: passive and active.
Security Services
- A security service is a facility or capability provided by a system to enhance its security.
Countering Security Attacks
- Security services counter security attacks by providing mechanisms to prevent, detect, and respond to threats.
Passive Attacks
- Eavesdropping and traffic analysis are examples of passive attacks.
- The goal of a passive attack is to obtain unauthorized access to information without modifying the system or data.
Active Attacks
- Masquerade attacks, replay attacks, and denial-of-service (DoS) attacks are examples of active attacks.
- Active attacks involve modifying the system, data, or traffic to compromise security.
Categories of Active Attacks
- Active attacks can be categorized into masquerade attacks, replay attacks, denial-of-service (DoS) attacks, and modification of messages.
- Note: Manipulation of messages is NOT a category of active attacks.
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