Consider an Old Fashioned Telephone Booth That Can Be Occupied

question 73

Multiple Choice

Consider an old fashioned telephone booth that can be occupied by one person at a time. Suppose one person went in and dialed a part of her number, and had to leave the booth. A second person went in and dialed a part of his number, and before the number was fully dialed, a connection to some other phone was made. What Java threads analogy would prevent this undesirable scenario?
I Acquire the lock prior to entering the booth
II Dial a complete number when inside the booth
III Hang up the phone and release the lock upon exiting the booth

• A) I
• B) I and II
• C) I and III
• D) I, II and III

---

Definitions:

Observable

Qualities, actions, or reactions that can be noticed or measured by someone else through direct visual perception or using scientific tools.

Action

The process or state of acting or doing something, typically to achieve a goal or purpose.

Psychology Laboratory

A controlled environment where psychological research, experiments, and testing are conducted to study various aspects of human behavior and mental processes.

Wilhelm Wundt

Regarded as the father of experimental psychology, he established the first psychology laboratory in Leipzig, Germany.