Alice buys a firewall from Bob and Sons Security Inc. gets along with the package, a digitally signed invoice with instructions for electronic money transfer and the company’s public key. Alice uses this key to verify the signature on the invoice and validate the document. She then proceeds to send the money as instructed. A few days later, Alice receives a stern reminder from the company stating that the money has not been received. Surprised, Alice checks with her bank and discovers that the money was transferred to Trudy. Explain how this could have happened and what vulnerability may Trudy have exploited?

The extended CIA model includes authentication, authorization, and non-repudiation in addition to the traditional CIA triad. For each of these three principles identify security technologies or techniques that can be used to implement it. In each case, justify your choice.

What was your favorite topic that was covered during this semester and why?

*************Conceptual Questions (No Partial Credit)******************

In classification, what does the decision tree split data based on?

A data cube is used for?

In clustering, what does k in k-means represent?

What does OLAP stand for?

ROLAP stands for?

In a confusion matrix, what does FN stand for?