Identify the correct formula for Return on Investment (ROI).

1. A. ROI = ((Expected Returns – Cost of Investment) / Cost of Investment) * 100
2. B. ROI = (Expected Returns + Cost of Investment) / Cost of Investment
3. C. ROI = (Expected Returns Cost of Investment) / Cost of Investment
4. D. ROI = ((Expected Returns + Cost of Investment) / Cost of Investment) * 100

Correct Answer: C

Which of the following is the range for assigned ports managed by the Internet Assigned Numbers Authority (IANA)?

1. A. 3001-3100
2. B. 5000-5099
3. C. 6666-6674
4. D. 0 – 1023

Correct Answer: D

You are working on a thesis for your doctorate degree in Computer Science. Your thesis is based on HTML, DHTML, and other web-based languages and how they have evolved over the years. You navigate to archive.org and view the HTML code of news.com. You then navigate to the current news.com website and copy over the source code.
While searching through the code, you come across something abnormal:
src=http://coolwebsearch.com/ads/pixel.news.com width=1 height=1 border=0
>
What have you found?

1. A. Trojan.downloader
2. B. Blind bug
3. C. Web bug
4. D. CGI code

Correct Answer: C

Software firewalls work at which layer of the OSI model?

1. A. Data Link
2. B. Network
3. C. Transport
4. D. Application

Correct Answer: A

Which of the following scan option is able to identify the SSL services?

1. A. –sS
2. B. –sV
3. C. –sU
4. D. –sT

Correct Answer: B