Final answer:
A network switch maintains its forwarding table with the help of a self-learning process.
Step-by-step explanation:
The subject of this question is Computers and Technology and it is suitable for High School grade level students.
The correct answer to the question is: A. Self-learning process. A network switch maintains its forwarding table with the help of a self-learning process. This process allows the switch to learn and store information about the devices connected to its ports.
For example, when a device sends a packet, the switch examines the source MAC address of the packet and associates it with the port the packet arrived on. This way, the switch gradually builds its forwarding table, allowing it to efficiently forward packets to the correct destination.