GRID 試験問題を無料オンラインアクセス

Your ICS monitoring system has detected unexpected data flows between a remote access gateway and a programmable logic controller (PLC).
What steps should be taken to investigate and respond to this activity?

• A.Isolate the PLC from the network, review the logs, and investigate the source of the remote access activity
• B.Ignore the activity as a false positive
• C.Restart the PLC to clear its logs
• D.Disable all network traffic

You are responsible for implementing active defense mechanisms in a critical infrastructure ICS environment. After reviewing traffic logs, you identify repeated attempts to access an ICS network segment from an external source.
How should you proceed with mitigating this threat?

• A.Increase system capacity to handle more traffic
• B.Ignore the attempts and continue regular operations
• C.Terminate all external connections to the ICS environment
• D.Review firewall settings, block the IP addresses involved in the access attempts, and implement additional network segmentation to isolate critical systems

Your ICS environment has been compromised by a cyber attack targeting one of your Human-Machine Interfaces (HMIs).
What steps should be taken to contain and mitigate this incident?

• A.Isolate the HMI from the network, investigate the root cause of the attack, apply necessary patches, and monitor the HMI for further suspicious activity
• B.Increase the HMI's processing power to improve performance
• C.Replace all systems in the network
• D.Ignore the incident and continue regular operations

Which of the following is a common source of threat intelligence for ICS environments?

• A.Streaming platforms
• B.E-commerce websites
• C.Publicly available databases of known vulnerabilities and exploits
• D.Personal social media accounts

Why is it important to document the incident response process in an ICS environment?

• A.To improve employee productivity
• B.To provide a record for auditing and improving future incident response efforts
• C.To reduce system performance
• D.To monitor financial performance