Define SIEM and elaborate on its role in network security.

Explain the concept of Network Access Control (NAC) and its role in ensuring secure network access. What are the key components of a NAC system?

In the context of the OSI model, elaborate on the purpose and functionality of a network intrusion detection system (NIDS) and a network intrusion prevention system (NIPS).

Please provide a definition of the network security function of a firewall. Define the aforementioned terminology and furnish empirical evidence from the relevant industry to support the statement.

Confidentiality, Integrity, and Availability are core attributes in security. Identify 3 threats to a network that could compromise security. You are required to state the security attribute that is compromised by each threat.

Describe the functionality of Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS) within the OSI model.

Compare and contract AWS network access control lists (NACLs) and security groups. What is the best way to secure virtual networks in AWS?

How does your firm find network security vulnerabilities before they become issues?