What is a primary action taken to enhance security in a datacenter?

Enhancing security in a datacenter often involves managing user accounts effectively, and a primary action in this context is removing guest accounts. Guest accounts typically pose a security risk as they can grant unauthorized users access to the datacenter or its systems, possibly leading to data breaches or system compromises. By eliminating these accounts, organizations significantly reduce the attack surface and the risk of unauthorized access.

In contrast, methods like installing default passwords would undermine security rather than enhance it, as default passwords are generally well-known and can be exploited by malicious actors. Leaving all ports open is detrimental to network security, as it allows potential attackers multiple vectors to exploit system vulnerabilities. Finally, minimizing physical security measures is contrary to the essential practice of securing a datacenter, where robust physical security is critical to protect against unauthorized access and potential threats.