Consider the model with nonpreemptive priorities presented in Sec. 17.8. Suppose there are two priority classes, with 1 2 and 2 3. In designing this queueing system, you are offered the choice between the following alternatives: (1) one fast server ( 6) and (2) two slow servers ( 3). Compare these alternatives with the usual four mean measures of performance (W, L, Wq, Lq) for the individual priority classes (W1, W2, L1, L2, and so forth). Which alternative is preferred if your primary

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 option completes the explanation for conflict of interest in an organization

Who is most likely be your target audience if you create a slide presentation that had yellow background and purple text