Final answer:
A high number of pages per second and high disk activity indicates that the system may be experiencing excessive paging or swapping.
Step-by-step explanation:
A high number of the pages per second statistic and high disk activity means that the system may be experiencing excessive paging or swapping. When the system is unable to keep all necessary data in RAM, it needs to retrieve information from the hard disk, resulting in high disk activity. This is commonly observed when there is insufficient RAM to handle the current workload, causing the system to transfer data between RAM and virtual memory on the disk frequently.