Calculate the CPI, taking memory access stalls into account, given the following: CPI_ideal = 1 (this is the CPI of the processor if the memory system hit in the L1D caches) Fraction of instructions which are Load/Store: 25% L1Dhit time = N/A (already included in CPIideal) L1D hit rate = 90% L2 hit rate = 75% L2 hit time = 20 cycles DRAM access time = 100 cycles Selected 3.625 Response Feedback: Remember that only 25% of instructions access the L1D. The remaining instructions are unaffected by the memory system.

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

Which tool could be used to display only rows containing presidents who served two terms

Colby works as a shipping clerk for a major package delivery service. some of his daily tasks include tracking shipments and entering orders. which aspect of the information technology cluster would he most likely be trained in? a.networkingb.databasesc.hardwared.software