Which of the following occurs when a con artist lures bidders off legitimate auction sites by claiming to offer the same item at a lower price?

Which of the following is used when more than one choice may be selected?

A) check box B) sliders C) drop-down list box D) list box E) radio button

What is most commonly used for the goal of nonrepudiation in cryptography?

A. block cipher B. digital certificate C. PKI D. digital signature