A network operations manager has added a second row of server racks in the datacenter. These racks face the opposite direction of the first row of racks.Which of the following is the reason the manager installed the racks this way?
A. To lower energy consumption by sharing power outlets
B. To create environmental hot and cold isles
C. To eliminate the potential for electromagnetic interference
D. To maximize fire suppression capabilities
Answer: B. To create environmental hot and cold isles
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In the following code, what will the call to super do?
``` public class ClassB extends ClassA { public ClassB() { super(40); System.out.println("This is the last statement "+ "in the constructor."); } } ``` a. This cannot be determined from the code. b. It will call the method super and pass the value 40 to it as an argument. c. It will call the constructor of ClassA that receives an integer as an argument. d. The method super will have to be defined before we can say what will happen.