If a blade chassis can hold 16 half-height blades or eight full-height blades, what is the MAXIMUM number of half-height blades that can be installed if six full-height blades are already installed?

In a blade chassis designed to accommodate both half-height and full-height blades, understanding the configuration and space allocation is critical. Given that the chassis can hold a total of 16 half-height blades or 8 full-height blades, and 6 full-height blades are already installed, you need to determine how many additional half-height blades can be fitted.

Since the chassis can hold a maximum of 8 full-height blades, and 6 are currently in use, there is space for just 2 more full-height blades. However, once those blades are accounted for, the remaining capacity of the chassis relates to the total volume it has in equivalent half-height blades.

Each full-height blade occupies the space equivalent to 2 half-height blades. Therefore, 6 full-height blades equate to 12 half-height blade slots (6 full-height blades x 2 = 12 half-height slots). Given the total capacity of the chassis, which is equivalent to 16 half-height blades, and accounting for the 12 slots already occupied by the full-height blades, there are 4 slots remaining.

Consequently, the maximum number of half-height blades that can still be installed in this situation is 4, making that the correct answer.