________ is the ability of two or more people to communicate in text over the Internet in real time.

A) VoIP
B) SMTP
C) Remote handshaking
D) Instant messaging

The scan time is the time required for one complete execution of the user program.

A subclass can directly access ____.

A) public members of a superclass
B) private members of a superclass
C) all members of a superclass
D) none of the members of a superclass

You can select multiple paragraphs by using the ____ key repeatedly.

A) CTRL+END
B) CTRL+A
C) SHIFT+HOME
D) CTRL+SHIFT+DOWN ARROW