CompTIA Security+ Certification SY0-601: The Total Course - Chapter 9 Exam Question Review

The video tutorial discusses industrial computing environments, focusing on ICS and PLC systems. It presents a scenario where an IT security technician must prevent unauthorized network access in a water treatment facility. The recommended solution is air gapping, which isolates the network from others, including the internet. While air gapping is effective, it has limitations, such as vulnerability to infected devices. Other security measures like MFA, network intrusion detection, and IPsec are also discussed, but air gapping remains the most effective for preventing remote access.

What is the primary role of PLCs in industrial computing environments?

• To control water pressure and chemical release

• To manage financial transactions

• To detect network intrusions

• To encrypt network traffic

Which method is most effective in preventing unauthorized remote access to a sensitive network?

• Multifactor Authentication

• IPsec

• Network Intrusion Detection Systems

• Air Gapping

What does air gapping a network entail?

• Ensuring the network is physically isolated from other networks

• Connecting the network to the internet securely

• Implementing multifactor authentication

• Using VPN tunneling for secure communication

Why is multifactor authentication not sufficient for preventing unauthorized remote access in an air-gapped network?

• It only strengthens internal network security

• It can be easily bypassed

• It requires constant internet access

• It is not compatible with industrial networks

What is a limitation of using network intrusion detection systems in an air-gapped network?

• They cannot detect any network activity

• They are too expensive to implement

• They require constant updates

• They do not prevent unauthorized access