Which of the following is a primary focus when maintaining a secure network?

Regular software updates are essential for maintaining a secure network because they help protect against vulnerabilities and exploits that could be targeted by malicious actors. Software vendors frequently release updates that patch known security holes, enhance existing features, and improve overall system stability. When these updates are applied consistently, they reduce the risk of security incidents, data breaches, and other threats.

In contrast, while increasing bandwidth, implementing fire suppression systems, and business continuity planning are all important aspects of an organization's broader operational and disaster recovery strategies, they do not directly relate to securing the network itself. Increasing bandwidth might improve performance but does not necessarily enhance security. Fire suppression systems are crucial for protecting physical assets from fire, and business continuity planning is vital for ensuring that an organization can continue operating after a disruption. However, neither of these directly addresses the immediate risk posed by outdated software and the vulnerabilities it may harbor.