Why is disabling unused ports critical for network security?

Disabling unused ports is a critical practice for network security because it limits the entry points that could be exploited by unauthorized users or attackers. Each open port on a networked device represents a potential access point that can be targeted. By shutting down ports that are not in use, organizations reduce the number of vulnerabilities available for exploitation.

This proactive measure is essential in creating a minimized attack surface, where fewer avenues are available for malicious actors to infiltrate the network. It helps to ensure that only the necessary services are accessible, thereby enhancing overall security. Additionally, it allows for better monitoring of network traffic and activity, making it easier to identify any suspicious behavior or attempted breaches.

While other options like increasing network speed or simplifying configuration may offer benefits in different contexts, they do not directly contribute to the primary goal of protecting the network from unauthorized access. The focus remains on securing the network by controlling access, making option C the most relevant and critical reason for this practice.