iSACA Cybersecurity Fundamentals Certification Practice Exam

What does Network Access Control (NAC) aim to achieve?

1. Monitor network performance

2. Control access to a network

3. Manage network hardware inventory

4. Evaluate software vulnerabilities

The correct answer is: Control access to a network

Network Access Control (NAC) primarily aims to control access to a network. This involves implementing policies and mechanisms that determine whether devices and users can connect to the network and under what conditions. NAC systems enforce security policies by evaluating devices attempting to access the network, ensuring that they meet specific security standards, such as having updated antivirus software or the latest security patches. By controlling access, NAC helps to protect the network from unauthorized users and potential threats, thereby enhancing overall network security. The other choices, while related to network management, do not reflect the primary goal of NAC. Monitoring network performance focuses on analyzing traffic and ensuring adequate bandwidth, which is different from access control. Managing network hardware inventory involves keeping track of physical devices in a network, which is not the purpose of NAC. Similarly, evaluating software vulnerabilities pertains to assessing risks and weaknesses in applications, rather than controlling who can access the network itself.