MIS 4477 Exam 1 Notes

MIS 4477 Network and Security Infrastructure
JAKE MESSINGER (jake@uh.edu)

Exam 1 Notes Fall 2017

Last Update: 09/27/2017 @ 12 noon

LAYOUT:

40 Multiple choice questions, 2 points each
Questions are pulled from a pool and in random question AND answer order; therefore, no 2 tests are the same.
2 essay questions, 10 points each
Testing Method - Online Via Blackboard and password
Test Date/Available: Thursday 09/28/2017 (email will be sent out when it is available) to Sunday at 11:59 PM
Time: 2 hours from the time you begin, single submission
Content Covered: Class lectures, Power Points, assigned homework, videos and Fitzgerald Chapters 1-5

RULES:

This is an online test. YOU, the student, should be taking the test. Nobody else is allowed to help you take this test.
You cannot ask any questions of a live person regarding test content before, during or after the test.
You may NOT print, copy or save any part of this test other than submitting it for grading. Blackboard has mechanisms that can track this while you are taking the test.
You may not share any answers to any questions with any other students in the class, even if they have told you they have already taken the test.
You may use your notes, books, power point presentations, the internet or any other static information. Again, you cannot ask for help from any other humans.
If it is determined that any of these rules are broken, you may be dropped from the class, receive a failing grade for the class and you may also be subject to academic dishonesty policies at the University.

GRADING:

The test will be initially electronically graded after you press the submit button. This is a raw score and may not be your final test grade.
If you feel that there are 2 possible answers, choose the best one, but then email me your concern and reasoning behind your answer. Occasionally there are 1 or 2 questions are dropped from a test if they are determined to be not legitimate or appropriate after the fact. If I determine there are 2 correct answers for a question, or if the question is improperly structured, I will remove it from the test and nobody will receive credit for it. SO, for example, if there were 30 questions, and 1 was determined to be invalid, your score would be the number of correct answers out of 29.
Your test grade will either be available immediately after you take the test, OR, if there is an essay or upload component, the grade will be available 72 hours online after you submit the test.

AFTERMATH:

We will discuss the test at the following class meeting, YOU SHOULD ATTEND. This is your chance to dispute any questions and humble me in front of the rest of the class.
If you missed the test, you may make it up ONLY with a valid medical excuse OR if I have given you permission prior to the test day.
If you perform poorly on the test (i.e. lower than 50%), I suggest before dropping the course, to come talk to me first. I will assign a W for your grade if you drop.

TEST CONTENT:
Questions will come MOSTLY from the book, and the Power Point Presentations as well as any homework I assigned you including any videos I asked you to watch, although it would be a very good idea to read my notes on each chapter. Pay attention to the SUMMARY and QUESTIONS in the back of each chapter. There will be no SPECIFIC questions from any of the case studies. It may be beneficial for you to search for some of the items on the Internet, e.g. ISO, ANSI, history of the World Wide Web, on sites such as whatis.com and google.com.

Please note that because of the brevity of the test, I am not able to ask questions over all the topics that I felt were important for you to know, otherwise the test would be 100+ questions. I placed less emphasis on physical technical issues and tried to ask more questions about the background and functions of different levels and protocols. I will ask questions about Netmasks and network addresses but you will not be doing any math to determine subnet sizes. I will leave this for the next exam.

(The following datapoints possibly relate to at least one specific questions on the test, although not in this order. Not all of these topics will be on your test. There are multiple versions:

Chapter 1 - Introduction to Data Communications

· Be familiar with the Federal Judge order in 1984 that broke up Ma Bell and also Telecommunications Act of 1996 and what impact it had on the industry.

· What changed in 1983 with respect to the Internet? What 2 parts were created?

· Describe the difference and relative scope of a LAN, BN, MAN and WAN.

· How does the Internet model differ from the OSI model? What are the layer differences?

· Know what each layer of the Internet model is responsible for. What are the functions and how do they communicate with the other layers.

· Define a protocol and give some examples of protocols used at each layer, e.g. Twisted Pair, Ethernet, IP, TCP, HTTP.

· What is the difference between de facto standards and official (de juro) standards and explain why standards are important in Networking.

· Know these Standards making groups: ANSI, ISO, ITU-T, IEEE

Chapter 2 - Application Layer

· Define Application Architecture

· Define a cluster.

· What is tiered architecture? Describe different levels and the advantages/disadvantages of each (think in terms of cost, complexity and scalability) What is middleware.

· What is a thin client versus a fat or thick client?

· What is a client/server architecture? What are the pro's and con's of it versus a Host based and also a PC based architecture?

· Define URL.

· What is the main difference between SMTP, POP(3) and IMAP email protocols?

Chapter 3 - Physical Layer

· Give some physical layer protocols.

· Understand the difference between analog and digital data.

· What is the difference between point to point and multipoint (shared) circuits?

· What is simplex transmission versus half and full duplex?

· Pros and Cons of using Fiber Optic cable versus twisted pair or Coax

· Define Propagation Delay and understand why it is an issue with Satellite Transmission.

· Know the important factors in choosing media

· What is wave amplitude versus frequency?

· Define Modulation

· What is DSL and how is it similar and different from Cable Modem service.

Chapter 4 - Data Link Layer

· What is Media Access control and on what are its responsibilities?

· What is the difference between contention based and token passing and polled access control?

· Which is better for large networks? Contention Based or Controlled approach?

· Which types of media are more/less susceptible to noise?

· What is the primary source of errors on data networks at this layer?

· Define Attenuation.

· Understand what error checking and error correcting is. (ACKs and NAKs)

Chapter 5 - Transport and Network Layer

· What is the difference between the Transport and Network Layers?

· What is TCP/IP? What does the TCP part do? What does the IP part do? Who invented it?

· How are port address used to link the transport/network layer to the application layer. Give some standard port addresses for commonly used applications.

· What is the difference between IPv4 and IPv6 and why was IPv6 invented?

· What is a Netmask? What is a Class A, B and C subnet network?

· What is the difference between Unicast, Broadcast and Multicast?

POSSIBLE ESSAY QUESTIONS:

· Be able to draw the Internet model with all the elements at each level and describe what goes on at each level

· Be able to describe what happens to a web request as it passes from your application layer to a server's (reciever's) application layer.

End of Exam 1 Notes