Graph theory started in 1736 with the ____ problem.

__________, in the context of passwords, refers to an adversary’s attempt to learn the password by observing the user, finding a written copy of the password, or some similar attack that involves the physical proximity of user and adversary.

Fill in the blank(s) with the appropriate word(s).

Which of the following is not a dimension used to categorize an open source community?

A) programming style B) environment C) user community D) licensing