What is the primary function of a Palo Alto Networks Next-Generation Firewall (NGFW)?

The primary function of a Palo Alto Networks Next-Generation Firewall (NGFW) is indeed to provide advanced threat prevention and traffic visibility. This capability goes beyond traditional firewall functionalities by incorporating various security features such as application-aware filtering, intrusion prevention systems, and malware detection. The NGFW not only inspects traffic but also understands the applications and users behind that traffic, enabling it to make more informed security decisions.

In contrast to the other options, the NGFW is not limited to just managing traffic encryption or simplifying network device management. While those aspects can be part of an overall network security strategy, they do not capture the comprehensive threat prevention capabilities that define the functionality of a Next-Generation Firewall. Additionally, the NGFW does not operate solely as a traditional stateful firewall; rather, it integrates stateful capabilities with more advanced features, distinguishing itself in today's complex threat landscape.