Which of the following is a characteristic of a denial-of-service (DoS) attack?

• A.An attacker attempts to gain unauthorized access to a system.
• B.An attacker steals or alters sensitive data.
• C.An attacker floods a system with excessive requests, rendering it unable to function properly.
• D.An attacker intercepts and modifies network traffic.

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Which of the following is a principle of data security?

• A.Encryption
• B.Firewall
• C.Intrusion Detection System
• D.Data Masking

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During an incident response, the security team needs to isolate a compromised server from the rest of the network but still allow forensic analysis. Which action should they take?

• A.Power off the server immediately.
• B.Disconnect the server from the network and connect it to an isolated forensic network.
• C.Delete suspicious files from the server.
• D.Reset all user passwords on the server.

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Which of the following updates is responsible for ensuring proper communication between hardware devices and the operating system?

• A.Device drivers
• B.Windows Update
• C.Application updates
• D.Firmware updates

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What is the purpose of Security Information and Event Management (SIEM) systems?

• A.To analyze network traffic and detect potential security threats.
• B.To centrally collect, store, and analyze logs from various systems to detect and respond to security incidents.
• C.To encrypt sensitive data to protect it from unauthorized access.
• D.To authenticate and authorize users to access network resources.

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