Static packet filtering firewalls are limited to inspecting packets for which there are good application proxy filtering rules inspecting packets in isolation from their context both inspecting packets for which there are good application proxy filtering rules and inspecting packets in isolation from their context neither inspecting packets for which there are good application proxy filtering rules nor inspecting packets in isolation from their context

If the polar bear were taken out of the food chain what would happen to the seal population the seal population would diminish the seal population would grow dramatically the seal population would stay the same the seal population would decrease slightly

The three logical operators used to write compound conditions are "and," "or," and "not." a: true b: false

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)?