To change the background color of our web page to red, which would be correct in the style section? a .body: red b .body {red} c .color: red d .body {background-color: red}

Your boss wants you to configure his laptop so that he can access the company network when he is on the road. you suggest a vpn connection to him. he is very concerned about security and asks you how secure vpn is. what do you tell him?

Requirement types discussed during software development include functional and color scheme nonfunctional and code style constraint and nonfunctional fashionable and functional.

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)?