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SECURITY AND PRIVACY
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SE 571 Entire Course Principles of Information Security and Privacy
SE 571 Full Course Principles of Information Security and Privacy
SE 571 Week 1 DQ1 Vulnerabilities of Your Systems
SE 571 Week 1 DQ2 Threats against Your Systems
SE 571 Week 2 DQ1 Security Issues in Telecommunications
SE 571 Week 2 DQ2 What Access Controls Are in Use
SE 571 Week 3 DQ1 Cryptographic Products
SE 571 Week 3 DQ2 Cryptographic Standards
SE 571 Week 4 DQ1 Network Services
SE 571 Week4 DQ2 Security Architecture
SE 571 Midterm Exam Principles of Information Security and privacy
Question 1. (TCO A) What are the three goals of security in computing? For each goal, list two controls
that can be implemented to help achieve that goal.
Question 2. (TCO A) List and define five desirable qualities in a process designed to evaluate the
trustworthiness of an operating system
Question 3. (TCO B) Suppose you have a high capacity network connection coming into your home, and
you also have a wireless network access point. Also suppose you do not use the full capacity of your
network connection. List three reasons you might still want to prevent an outsider obtaining free network
access by intruding into your wireless network
Question 4. (TCO C) Explain how a hashing algorithm works and how it can be used to provide
authentication and data integrity
Question 5. (TCO B) Which of the following is a correct statement?
Question 6. (TCO A) What are the three types of user authentication? Name three examples of each
type of authentication.
Question 7. (TCO C) Respond to each part of this question:
a) Describe how a long number (encryption key) can be shared between sender and receiver without
using any source that is obvious to outsiders and without directly sending the number from sender and
b) Describe how a long number (encryption key) can be shared between sender and receiver over an
unsecured network without loss of confidentiality.
Question 8. (TCO A) May a database contain two identical records without a negative effect on the
integrity of the database? Why or why not?
Question 9. (TCO B)It’s been said that firewalls are dead. Some think that, because of the prevalence of
application-layer attacks, packet filtering firewalls are of no real use in protecting networks. Name three
advantages of using packet filtering firewalls in modern networks.
SE 571 Final Exam Principles of Information Security and Privacy
Question1. (TCO A) You are responsible for developing a security evaluation process that can be used
to assess various operating systems both during and after development. List the five most desirable
qualities your evaluation process should have and explain why they are important. (Be sure to address
qualities of the evaluation process, not specific metrics for assessment of operating systems.) (Points: 40)
Question 2. (TCO B) The Open Systems Interconnection model is inherently inefficient. On the source
host, each layer must take the work of higher layers, add some result, and pass the work to lower layers.
On the destination host, each layer must process these results from lower layers and pass the
appropriate information to upper layers. Surely this wrapping and unwrapping process is inefficient.
Assess the security advantage of this layered approach. (Points: 40)
Question 3. (TCO C) Why is a firewall usually a good place to terminate a Virtual Private Network (VPN)
connection from a remote user? Why not terminate the VPN connection at the actual servers being
accessed? Under what circumstances would VPN termination at the server be a good idea? (Points: 40)
Question 4. (TCO D) A computer programmer has been arraigned for a computer crime. She is
suspected of having accessed system files on a public Web server. The programmer’s attorney argues
that his client was only trying to determine if the website was secure and that no harm was done to the
Web server or its system files. The programmer’s attorney also argues that it is possible that the log files
that show that his client accessed system files were tampered with. The attorney claims that the Web
server was made accessible to the public anyway so that there was no violation of the law and that the
arraignment against her client should be thrown out. You’re the judge. What is your analysis of these
arguments? (Points: 40)
Question 5. (TCO E) After reading about attacks on servers similar to the ones used in one of your
company’s departments, the CIO has asked you to come up with a report as to what, if any, steps should
be taken with your servers. List and describe the steps you would need to take in order to complete a
detailed report. (Points: 40)
Question 6. (TCO F) In the U.S., laws are enforced by police agencies and the courts. What are ethics
and who enforces them? (Points: 40)
Question 7. (TCO H) Some IT department policies are designed to prevent behaviors by IT staff. While
some depend upon the employee voluntarily complying with the policy (for example: do not reveal
technical information to outside parties), others are enforced technically (for example, authentication
required for system access). What is an example of a policy that technically enforces ethical behavior by
IT staff? Provide policy wording for your example. (Points: 40)
True False Questions
Question 8. (TCO G) Which of the following statements is true? (Points: 20)
(1) From a legal point of view, it is easier to return software to a store because it doesn’t meet your needs
than it is to do so because the software is of poor quality
(2) If a programmer is, i) supervised in his work, ii) subject to being fired by his employer, iii) directed in
his work by his employer, and iv) under contract for the work he is doing, it is most likely true that the
programmer is considered the author of the work he has produced
(3) A civil judge cannot find that a plaintiff has been harmed and hold a defendant liable if the defendant
has violated no written law
(4) It is easier to prove guilt in a criminal case than it is in a civil case