Final answer:
The correct answer is option D. Application Level. An application-level firewall acts as a proxy between the client and the server, initiating new connections and presenting its own IP, which classifies it as the correct answer for the question.
Step-by-step explanation:
An application-level firewall, also known as a proxy firewall, works at the application layer of the OSI model. It creates a separate connection with the server on behalf of the client. The firewall acts as an intermediary (a proxy), thereby presenting its own IP address to the server instead of the client's IP. This type of firewall can inspect the contents of the traffic, providing a high level of security by enforcing application-specific protocols.
An application level firewall, also known as a proxy firewall, initiates a new connection on behalf of the client and presents its own IP to the server when a client initiates a connection to a server. This type of firewall acts as an intermediary between the client and the server, allowing it to filter and inspect application-layer data. It can provide additional security by hiding the client's IP address from the server, adding an extra layer of protection.