You just got a call from the University system administrator, who says that either you or your roommate is issuing denial-of-service attacks against other students from your shared network segment. You know you are not doing this, but you are unsure about your roommate. How can you tell if this accusation is true or not? And if it is true, what should you do about it?

Which of the following is not a symptom of chronic fatigue syndrome

Which company provides a crowdsourcing platform for corporate research and development? a: mtruk b: wiki answers c: mediawiki d: innocentive

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)?