Final answer:
A vaccination is a way of acquiring active artificial immunity. Active artificial immunity is achieved through the administration of vaccines, which trigger an immune response and provide protection against future infections.
Step-by-step explanation:
A vaccination is a way of acquiring active artificial immunity. Active artificial immunity is achieved through the administration of vaccines, which contain weakened or killed pathogens or their components. When a vaccine is administered, it triggers an immune response in the body, leading to the development of immunological memory and protection against future infections.