计算机网络全ppt

1、Computer NetworksComputer NetworksCSCI-345Dr. Sunan Han, NYITAndrew S. Tanenbaum, “Computer Networks”, Fifth Edition, Prentice Hall, NJ, 2011Publishing House of the Mechanical Industry, ISBN: 9787111359258 Textbook:Prerequisite and Description Prerequisite: CSCI-330 Operating Systems An introduction

2、 to the fundamentals and the applications of data-/tele-communications. Network architectures, topology and the OSI reference model will be discussed Some software tool may be used to simulate the connectivity, configuration and operation of a simple local area networkCourse Learning Outcomes An abi

3、lity to use a variety of computer programming languages and be competent at least in one high level language An ability to apply programming language concepts, such as data models, control structures, language translation and testing and debugging, in the development of software systems An ability t

4、o apply algorithmic concepts and constructs in problem analysis and design An ability to determine algorithm efficiency, computability and resource usage A knowledge of contemporary issues An ability to use current techniques, skills, and tools in an area of computer scienceCourse ObjectivesAt the e

5、nd of this course all students are able to: Describe the essential features of a networking protocol Demonstrate the processes of packet construction and the deconstruction Describe the responsibilities of each layer of the OSI reference model and TCP/IP model Analyze applications and their underlyi

6、ng protocols Discuss important network standards in their historical context Compare conventional cable networking and wireless networking1. Relate networking functions with appropriate layers of the OSI and TCP/IP modelsAttendance Policy A student is expected to attend each class on a regular and p

7、unctual basis Attendance will be checked every time by the professor Students will not be allowed to be late or absent during the semester for more than three (3) times. Students who exceed these limits may be withdrawn from the course by the instructor with an F (fail) grade Absence from a schedule

8、d test is generally disallowed Students asking for leave of absence from class must follow the existing NYIT/NUPT policy of requesting for leaveAcademic Dishonesty Cheating or copying on an examination or an assignment will result in an F grade on the exam or assignment a yellow form is sent to 院里 I

9、f it occurs the second time, the grade for the whole course will be an F If it occurs the third time, the case will be brought to the university and the ultimate punishment can be a dismissal from the university Please refer to the Cheating Policy being enforced by both NYIT and NUPTAssignments or E

10、xercises Grades on late homework assignments will be reduced by 10%, if they are submitted after the due date Exercises are due one week in class following the one in which it is assigned Exercises will be checked and credited, but not graded. Solutions will be provided and discussed in detail in cl

11、ass Prepare two notebooks for the assignmentsReading Assignments No particular assignments for reading Recommendation: Read the section or chapter before and after the lecture that covers it. It will help in learning the material, answering questions in the homework and the midterm and final examsEx

12、ams and Grading Policy There are one midterm exam in week 7 There is a final exam and the end of semester (week 15) There will be no excuse to be absent at the exams, or you fail the test Grading Homework and attendance: 25% Midterm exam 35% Final exam 40%Letter GradePoint GradeLetter GradePoint Gra

13、deA95 - 100C65 69A-90 - 94C-60 64B+85 - 89D+55 59B80 - 84D50 - 54B-75 - 79FBelow 50C+70 - 74Importance of Homework and Attendance Homework and attending the classes help you learn the course material and improve your grades in the exams Your final grade is calculated based on the formula HW & At

14、tendance (25) + Midterm (?) + Final (?) Missing one or two homework assignments sometimes makes a big difference!Incomplete Grade: I A grade of incomplete, I, is used when a student has been unable to complete all assigned work for the course because of some unavoidable circumstance. The instructor

15、must certify that the students work is at least a pass at this point and the student must agree to complete the missing work A grade of I will become an F in the following situation: I is given in the semester and not made up by the end of the next semesterWithdrawal Grade: W Students can withdraw a

16、 class during the 3rd through the 8th week of the semester and receive a grade of W After the 8th week deadline, a student may withdraw and receive a W only if the student is passing the course. Otherwise, a student will receive a grade of WF.How I Can Help You If you have a question, you can ask me

17、 face-to-face during the class, after the class, or in my office during my office hour, which is by appointment You are encouraged to communicate with me in email at for appointments or questions. You have my promise to reply in 24 hours during week days Although English is our offici

18、al teaching language, Chinese can be used under certain conditions in this classHow I Can Help You Class Meeting Times: Mon., Tue. & Wed. 1:45PM 4:15PM Office Hours (Room 306, Teaching Building 1): Mon., Tue. & Wed. 4:15PM 5:15PM And by appointment A prior notice before meeting me for my off

19、ice hours will be appreciated Syllabus is posted on BlackboardBlackboard: A Teaching Tool From NYIT home page, select “MY NYIT” Log in your account with User Name and Password Select “Blackboard” Select the course “2013 Fall - NA1 - Communication Network Design” or “2013 Fall - NA# - Computer Networ

20、ks” Select “Syllabus” Click the PDF file to download the syllabusComputer NetworksComputer NetworksCourse CSCI 345 Topics:Introduction Uses of computer networks business, academic, personal/home and mobile Network hardware for LAN, MAN, WAN and wireless networks Network software protocols The OSI 7-

21、layer reference model The TCP/IP 5-layer model (that the book addresses) Example networks and standardizationLayer 1: The Physical Layer The basis for data communication Guided transmission media Wireless transmission Communication satellites The public switched telephone network The mobile telephon

22、e system Cable televisionLayer 2: The Data Link Layer Data link layer design issues Framing Error detection and correction Elementary data link protocols Sliding window protocols Protocol verification Example data link protocolsLayer 2: The Medium Access Sublayer The channel allocation problem Multi

23、ple access protocols Ethernet Wireless LANs Broadband wireless Bluetooth Data link layer switchingLayer 3: The Network Layer Network layer design issues Routing algorithms Congestion control algorithms Quality of service Internetworking The network layer in the Internet IPLayer 4: The Transport Laye

24、r The transport service Elements of transport protocols The internet transport protocols: UDPConnectionless The internet transport protocols: TCPConnection-oriented Performance issuesLayer 5: The Application Layer DNS domain name system Electronic mail The world wide web MultimediaWeekTopicAssignmen

25、t1Introduction: Reference models, Example Networks1.1, 1.2, 1.3, 1.42Introduction: continuedThe Physical Layer: Transmission media, PSTN, DSL, Multiplexing1.5, 1.6, 1.72.1, 2.2, 2.5, 2.6P106: 4, 10,11,16,17, 18,19,20,25,273The Physical Layer: TDM, SONET, DWDM, Modem Technologies2.5, 2.6P207: 6, 7, 8

26、, 18, 19, 37, 39, 56, UPSR/BLSR4The Physical Layer: Cable TV, Wireless Transmission, Data Link Layer: Data link layer design issues2.7, 2.3, 2.8, 3.1, 3.2P208: 10, 21, 23, 24, 27, 305The Data Link Layer: Error detection and error correction3.2, 3.3P273: 2, 3, 5, 9, 10, 14, 156The Data Link Layer: Flow control, Sliding window, Data link protocols3.3, 3.4, 3.5, P273: 16, 17, 18, 19, 337Midterm ExamCh. 1-38The Medium Access Control Layer: The channe