To determine whether two reference variables of the Integer type point to the same Integer object, we can use either the method equals of the class Integer or the operator ==.

________ are mechanisms used to send values into and out of a program unit.

A) Parameters B) Procedures C) Database triggers D) Packages.

Susan is setting up the network for a local coffee house and wants to ensure that users have to authenticate using an email address and agree to the coffee house's acceptable use policy before being allowed on the network. What technology should she use to do this?

A. 802.11 B. NAC C. A captive portal D. A wireless gateway