GIAC GRID 問題練習

Question No : 1
Why is it critical to develop a baseline of normal behavior before conducting threat hunting in an ICS environment?

• A.To reduce energy consumption
• B.To identify deviations from normal behavior that could indicate potential threats
• C.To disable unnecessary systems
• D.To eliminate the need for monitoring

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Question No : 2
What is one major limitation of signature-based detection systems in ICS environments?

• A.They can detect unknown threats easily
• B.They improve system performance
• C.They rely on pre-existing signatures and may fail to detect new or unknown threats
• D.They are automatically updated in real-time

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Question No : 3
Which tool is commonly used for monitoring network traffic in ICS environments?

• A.Microsoft Word
• B.Wireshark
• C.Photoshop
• D.Google Drive

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Question No : 4
Which tool or technology is commonly used for active defense in ICS environments to detect anomalies in network traffic?

• A.Office 365
• B.Network traffic encryption tools
• C.Intrusion Detection Systems (IDS)
• D.Cloud storage services

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Question No : 5
How does active defense in ICS environments differ from passive defense?

• A.Active defense takes no action in response to threats
• B.Active defense focuses on monitoring, detection, and response in real-time, while passive defense focuses on building barriers and minimizing attack surfaces
• C.Active defense is less effective than passive defense
• D.Passive defense involves real-time mitigation of threats

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Question No : 6
Which of the following steps should be taken first when responding to a cybersecurity incident in an ICS environment?

• A.Identify and analyze the affected systems
• B.Shut down all systems
• C.Replace all hardware
• D.Restart the network

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Question No : 7
Why is it important to use both automated tools and manual techniques during threat hunting in ICS environments?

• A.Automated tools are too expensive
• B.Manual techniques are more accurate
• C.Automated tools help identify known threats, while manual techniques allow hunters to discover unknown or stealthy threats
• D.Manual techniques eliminate the need for detection tools

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Question No : 8
What is the key purpose of having an incident response plan in place for ICS environments?

• A.To improve system performance
• B.To provide a structured approach to responding to and recovering from security incidents
• C.To eliminate all cybersecurity threats
• D.To manage employee scheduling

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Question No : 9
What is a common challenge in conducting threat hunting in ICS environments?

• A.High employee turnover
• B.Lack of visibility into proprietary ICS protocols and devices
• C.Lack of network traffic
• D.Reduced system storage capacity

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Question No : 10
Which of the following is a key factor when determining whether a detected anomaly is a legitimate threat?

• A.The source and destination of the traffic
• B.The employee who detected the anomaly
• C.The size of the network
• D.The weather conditions

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Question No : 11
Which of the following best describes the value of threat intelligence in ICS environments?

• A.It helps organizations identify, analyze, and respond to threats more effectively by providing detailed information about current and future threats
• B.It increases the complexity of network operations
• C.It improves hardware maintenance
• D.It eliminates the need for incident response

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Question No : 12
How can active defense help prevent the exploitation of known vulnerabilities in an ICS environment?

• A.By ignoring vulnerability reports
• B.By disabling all network connections
• C.By continuously monitoring for attempts to exploit vulnerabilities and responding with automated mitigation actions
• D.By upgrading all systems to the latest versions immediately

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Question No : 13
How does visibility into communication flows between devices help enhance security in an ICS environment?

• A.It increases employee efficiency
• B.It reduces system memory usage
• C.It decreases the cost of system maintenance
• D.It allows security teams to detect and address unauthorized communication patterns that may indicate a security breach

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Question No : 14
Why is it important to monitor both internal and external traffic in an ICS environment?

• A.To track financial transactions
• B.To improve employee productivity
• C.To detect potential threats from both inside and outside the network
• D.To reduce system storage requirements

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Question No : 15
Which detection technique is commonly used to monitor unauthorized changes to configurations in ICS environments?

• A.User activity logging
• B.Network traffic analysis
• C.File integrity monitoring
• D.Antivirus scanning

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