Problem 9 (6): Why do digital systems sometimes have hidden memory? List 2 examples of hidden memories Problem 10 (6): Define and describe memory latency? Problem 11 (6): Name at least 3 key memory design parameters! Explain via a single phrase each such parameter. Problem 12 (4): What is a key physical advantage of SRAM over DRAM? Why is not all of main memory built using SRAM? Problem 13 (8): What is the meaning of cache line? What part of memory corresponds to a cache line? What is the relation of a line in cache to the natural size of a natural integer word? What is known a-priori (and why) about the address the first byte loaded inside a cache line? Problem 14 (5): Let the miss rate of a well-running program suddenly increase from 2% to 4%, the delta being 290, what will be the average memory access time after this increase in misses? Problem 15 (6): Explain hazard in a digital circuit. Which types of hazards do exist? How can some types of hazards be eliminated? Are hazards always harmful