Q2: State whether each of the statements that follows is true or false . If false , explain why. a. All methods in an abstract class must be declared as abstract methods. b. Invoking a subclass-only method through a subclass variable is not allowed. c. If a superclass declares an abstract method, a subclass must implement that method. d. An object of a class that implements an interface may be thought of as an object of thatinterface type.

Is a string of code written to hurt others by damaging or destroying

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.

What is the item which could be matched with a statement below? software installed on a computer that produces pop-up ads using your browser an example of social engineering malware loads itself before the os boot is complete type of spyware that tracks your keystrokes, including passwords windows key + l the practice of tricking people into giving out private information or allowing unsafe programs into the network or computer when someone who is unauthorized follows the employee through a secured entrance to a room or building a type of malware that tricks you into opening it by substituting itself for a legitimate program a computer that has been hacked, and the hacker is using the computer to run repetitive software in the background without the user's knowledge an infestation designed to copy itself repeatedly to memory, on drive space, or on a network