IT320 Operating System Concepts

1. IT320Operating System Concepts Unit 9: Distributing Computing & Networking Kaplan University

2. Upcoming Topics Kaplan University • Unit 9: Distributing Computing & Networking • Last Seminar for class! • Discussion Questions due by July 19 • Unit 9 Paper due by July 19 • Unit 10: Final Project • No Seminar in Unit 10 • No Discussion Questions in Unit 10 • Complete your Final Project • Due Tuesday, July 26 at 11:59 pm ET

3. Unit 9 Overview Kaplan University • Readings • Discussion Questions • Review Unit 9 Assignment • Lecture on Definitions • Final Project due on July 26 • Final Thoughts on the class

4. Unit 8: Reading & Assignments Kaplan University • Textbook Reading • Chapter 16 – Distributed Processing, Client/Server, and Clusters • Chapter 17 – Network • Web Reading • 2 Discussion Questions • 3 page essay discussing proposed network for scenario company (due Tuesday)

5. Unit 8: Discussion Questions Kaplan University • DQ1: Switching & RoutingWe often hear the terms: switched and routed networks or switching and routing. Explain the concepts and provide examples of how they work in real life. • DQ2: IPv6IPv4 has been around a number of years and is beginning to show its age. IPv6 has been designed to improve on IPv4. What are two features of IPv6 you think will provide the greatest impact on networking. Why?

6. Unit 9: Assignment Kaplan University • Problem Scenario: • Company “LTET” (Late to Embrace Technology) has grown substantially in the last few years. • The company manufactures, distributes, and sells acoustic products. Its manufacturing plants are in China. Its assembly and distribution plants in addition to HQ and sales offices are in the US. • Their current computing environment consists of a few computers scattered here and are not networked. • They rely on paper and do everything manually, but now they are ready to embrace 21st century technologies.

7. Unit 9: Assignment Kaplan University • Write a 3 page paper on the following: • Propose a network and a computing environment. • Your plan should identify a client/server class and a cluster implementation. • Money, time, and resources should NOT be a consideration in your creative mind. • Be sure to give them an efficient and secure network based on what you learned in this and previous units. • Be sure to defend your recommendations.

8. Unit 8: Assignment Overview Kaplan University • Your paper should include at least 3 pages of content (including required content, intro & conclusion) • Note that your paper will be longer than 3 pages as it will have a title page and a reference page in addition to the actual content pages required. • Be to sure include an introduction and conclusion (5 pts each) • Use APA format

9. Unit 9: Grading Rubric Kaplan University

10. Chapter 16 & 17Definitions Kaplan University

11. Client/Server Computing Kaplan University • A client/server environment includes: • Clients – typically single user PCs or workstations with operating system and easy to use GUI interface • Servers – provides shared services to clients(application server, database server, storage) • Network – how it is all connected to each other

12. N-Tier Client/Server Architecture Kaplan University • 1 Tier • Client & Server are same machine • 2 Tier • Client & Server are separate machines • 3-Tier • Client (end-user computer) • Middle-tier (application server) • Back-end server (database server)

13. Middleware Kaplan University Set of standard programming interfaces and protocols that site between the application and the communications software Has both server and client components

14. Clusters Kaplan University A group of interconnected whole computers working together as a unified computing resource that can create the illusion of being one machine What are the benefits of this? Can you name an example of a company that uses a cluster for their infrastructure?

15. Server Farms • Google • Facebook Kaplan University

16. Clusters Kaplan University • Benefits • Absolute Scalability • Incremental Scalability • High Availability • Superior price/performance

17. Protocol Kaplan University • Used for communication between entities in different systems • Entity – anything capable of sending or receiving(terminal, DBMS, user applications) • System – physically distinct object that contains one or more entities (computers, terminals, remote sensors) • Protocol is the language between the two

18. OSI Model Kaplan University • 7 layer model that identifies protocols for communicating at different layers. • Example Protocols • Transmission Control Protocol / Internet Protocol (TCP/IP) • IP – provides routing functionality between multiple networks • TCP – ensures data arrives at the destination application & the data arrives in the same order it was sent.

19. TCP/IP Applications Kaplan University • Simple Mail Transfer Protocol (SMTP) • Provides mechanism for transferring messages among separate hosts • File Transfer Protocol (FTP) • Used to send files from one system to another under user command • TELNET • Provides remote logon capability, which enables a user at a terminal or PC to logon to a remote computer and function as if directly connected

20. Final Project Kaplan University

21. Final Project Kaplan University Due Tuesday, July 26 at 11:59 pm No late assignments accepted Final Project is worth 200 points Write a 5-10 page essay explaining how a mainstream modern (Linux or Windows) Operating System is designed to integrate all components of the operating system. At least 3 outside references Include topics on the next page Be sure to include a Table of Contents

22. Final Project Kaplan University • The following list of topics is a starting point for your essay. You may include other topics if you feel they are important. Each topic listed below is worth 20 pts! • Processes and threads • Memory management • Scheduling (Including deadlock prevention) • File Management • Input and Output devices • Security issues (Discuss current malware threats & prevention techniques) • Data protection (RAID & Clusters)

23. Final Project – Grading Rubric Kaplan University 10 pts - Paper length is at least five pages and paper is formatted according to APA guidelines. 20 pts - The content of the paper is clear and demonstrates the student's understanding of the topics. 5 pts – Conclusion is logical and flows from the body of the paper, reviewing major points 5 pts – Introduction provides sufficient background on the topic and previews major points. 20 pts – Explain the concept of Processes/Threads & their management related to OS 20 pts – Explained concept of deadlock and related topics (Avoidance, Prevention, & Detection)

24. Final Project – Grading Rubric Kaplan University 20 pts – Explained Input / Output as related to OS 20 pts – Explain concept of scheduling as related to OS 20 pts – Explained file system and management of OS 20 pts – Explained security threats to computer systems & addressed viruses, bots, attacks, worms, as related to OS 20 pts – Explained security techniques & addresses defenses against the threats related to OS 20 pts – Explained Data Protection techniques (Backup, RAID) as related to OS

25. Final Thoughts on Class Kaplan University

26. What have you learned? Kaplan University Name two new things that you have learned in this class.

27. What is still confusing? Kaplan University Name two things that are still confusing to you.

28. What could be improved? Kaplan University List 2 things that could be improved with this course.

29. And Finally… Kaplan University What is the take-away lesson that you have learned from this class?

30. Any Questions? Kaplan University • Pam Van Hook pvanhook@kaplan.edu