Which of the following represents a strategy for effectively managing network security?

Regular software updates are essential in managing network security effectively. This strategy involves keeping operating systems, applications, and security software current to protect against known vulnerabilities. Software vendors routinely release updates and patches that address security flaws and enhance functionality, thus reducing the risk of exploitation by malicious actors. By routinely applying these updates, organizations ensure that their systems have the latest defenses against emerging threats, significantly mitigating potential security breaches.

In contrast, open access for all users can increase the attack surface, making it easier for unauthorized individuals to gain entry into the network. Disabling antivirus programs removes a critical layer of protection that is designed to detect and respond to threats, leaving the network vulnerable. Additionally, sharing passwords undermines security best practices, as it creates a single point of failure and can easily lead to unauthorized access if credentials are compromised. Thus, regular software updates stand out as a proactive and essential strategy for maintaining robust network security.