Final answer:
The process that screens individual IP packets based solely on the contents of the source and/or destination fields in the packet header is called Source/Destination Filtering.
Step-by-step explanation:
The correct answer is C) Source/Destination Filtering.
The process that screens individual IP packets based solely on the contents of the source and/or destination fields in the packet header is called Source/Destination Filtering. In this process, the firewall examines the header information of each packet and decides whether to allow or block it based on the source IP address, destination IP address, or both. Source/Destination Filtering helps to protect a network by controlling the flow of incoming and outgoing packets.
For example, if a firewall is configured to only allow packets with specific source IP addresses to enter the network, it can effectively block unwanted traffic from other sources.