1. Assume you are designing cache for a superscalar machine and you are allowed to use two levels of cache L1 and L2 where only L1 cache can be placed on the processor chip. For better performance, which design strategies you would choose for the following aspects? Justify how your strategy will improve performance and hit ratio. (8 points) a. Whether you would use Unified or Split Caches for each of L1 and L2 caches b. Relative size of L2 cache compared to L1 cache c. The connection between processor chip and L2 cache d. Which cache access method you would use