The longest battery life of a tablet on a single charge is around 4 hours.?

An organization is moving to a new datacenter. During the move, several technicians raise concerns about a system that could potentially remove oxygen from the server room and result in suffocation. Which of the following systems are they MOST likely discussing?

A. Fire suppression B. Mantraps at the entry C. HVAC D. UPS and battery backups

Which of the following statements is false?

a. You cannot prevent client code from creating objects of a class. b. One common use of a private constructor is sharing initialization code among a class’s other constructors. c. Another common use of private constructors is to force client code to use so-called “factory methods” to create objects. d. A factory method is a public static method that creates and initializes an object of a specified type (possibly of the same class), then returns a reference to it.