Cisco Cyber Security Practice Exam

Segregating internal and external networks is a highly effective strategy to prevent attacks on SCADA (Supervisory Control and Data Acquisition) systems. This approach operates on the principle of isolating critical infrastructure from potential threats originating from the internet or unsecured networks. By implementing network segmentation, you can create zones of trust within the network, ensuring that sensitive components of the SCADA system are not directly accessible from external environments.

This isolation minimizes the risk of unauthorized access and potential exploits, as even if an attacker gains access to the external network or less secure internal segments, they face additional barriers when attempting to reach the SCADA systems. Firewalls, intrusion detection systems, and secure gateways can control and monitor traffic between these segregated networks, providing an added layer of security.

In contrast, while regular software updates, strong passwords, and employee training are all important facets of a holistic cybersecurity strategy, they do not specifically address the risk exposure of SCADA systems in the same direct manner as network segregation. Software updates reduce vulnerabilities, strong passwords enhance access control, and training raises awareness, but without proper network segregation, these measures alone might not sufficiently protect SCADA systems from determined or sophisticated attacks. Therefore, network segregation stands out as a fundamental preventive measure to shield