Advantages and Disadvantages of Air Gap Bridging ICSSCADA Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which of the following is a common method used to transfer data across an air gap?

   • AUsing a direct fiber-optic connection between the control network and the internet.
   • BUsing a cloud-based file sharing service to synchronize data.
   • CUsing removable media such as USB drives to manually copy files between networks.
   • DUsing a wireless access point to connect the control network to the corporate Wi-Fi.
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A manufacturing company's engineering team needs to update the firmware on PLCs in a production cell that is air-gapped from the corporate network. The vendor provides the firmware as a signed file on a USB drive. The team lead wants to ensure the update does not introduce malware. Which procedure should you implement?

   • AScan the USB drive on a dedicated, isolated malware-analysis workstation, verify the vendor's digital signature, then transfer the file to the air-gapped network via a write-once medium.
   • BCopy the firmware file to a shared folder on the corporate network and then download it to the air-gapped network through a temporary VPN connection.
   • CEmail the firmware file to the plant manager, who will forward it to the engineering workstation on the air-gapped network.
   • DPlug the vendor's USB drive directly into a PLC engineering workstation on the air-gapped network and run the update.
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A city's traffic control system is air-gapped. The city council is considering connecting it to the internet for remote monitoring. Which of the following is a valid argument AGAINST this change?

   • AThe air gap makes it easier to update the system software.
   • BThe air gap reduces the need for physical security at the control center.
   • CThe air gap currently prevents remote attackers from directly reaching the traffic control system.
   • DThe air gap allows for faster data transfer between systems.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A pharmaceutical company's OT network is air-gapped. The IT department needs to collect batch production logs for regulatory compliance. Currently, operators manually copy logs to USB drives and deliver them to IT. This process is error-prone and sometimes logs are forgotten. Which improvement would maintain the air gap while reducing human error?

   • AAsk operators to email the logs from a shared OT workstation.
   • BUse a cloud storage sync tool on the OT network.
   • CImplement a managed file transfer solution that uses a one-way data diode.
   • DConnect the OT network to the corporate network with a firewall.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   In a real-world scenario, an organization decides to bridge the air gap of its ICS network to allow real-time production monitoring by the corporate office. What is the most important mitigation they should implement?

   • AImplement a one-way data diode to allow monitoring data to flow out without allowing inbound traffic.
   • BUse a direct internet connection for the monitoring data to ensure low latency.
   • CDisable all firewalls to simplify the network architecture.
   • DUse the same network segment for both corporate and control traffic to reduce complexity.
   Reveal Solution Discussion Select an answer first