Which hardware device connects your network to the internet? select one: a. firewall b. router c. modem d. switch?

Identify at least three types of characteristics that you were asked about as you the computer identify a fruit.

Why is an outfitting a workspace with video games in a technology development company considered a strategic use of money

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)?