Final answer:
After performing network enumeration, a security analyst should proceed with a vulnerability assessment. This step involves scanning the network for known vulnerabilities, which enables the analyst to identify and prioritize security issues for remediation.
Step-by-step explanation:
The question involves the steps taken by a security analyst after performing network enumeration in the context of securing a network. After enumeration, the analyst's NEXT step would be to perform a vulnerability assessment. This involves systematically scanning the network for known vulnerabilities, such as unpatched software, open ports, or misconfigurations, which could be exploited by attackers. A vulnerability assessment provides the security analyst with a prioritized list of security issues and potential mitigations.