Final answer:
This question involves a networking exercise where a student must determine the keyword displayed in a web browser after configuring NAT, which could be one of several congratulatory messages like 'NAT works!' or 'Good job!'.
Step-by-step explanation:
The question, which asks for the keyword displayed on a web browser after completing tasks in a PT Activity, is related to a networking concept called NAT (Network Address Translation). This scenario likely involves configuring NAT on a network device and verifying that it works by looking at a message displayed on a web browser. Since the question seems to come from a practical exercise, commonly done in networking classes, the keyword that would be displayed as a result of successfully performing the tasks is likely 'NAT works!', 'Good job!', 'Well done!', or 'NAT configured!'. However, without access to the specific PT Activity or further details, it is not possible to determine the exact keyword with certainty.