The network administrator in an organization is reinforcing the security measures of the company's enterprise infrastructure, with a key focus on port security. In an environment with dynamic port usage where different applications request ports on an ad$-$hoc basis, the administrator must consider the most secure method of assigning and managing these ports to mitigate security risks. To secure the enterprise infrastructure optimally, what key measure should the network administrator prioritize in terms of port security?

Group of answer choices

Blocking all incoming and outgoing connections on all ports

Implementing a dynamic port allocation and management system

Keeping all ports open to ensure application functionality

Assigning all applications a static port number