"Computer Network" course syllabus

I. Course Introduction
Network technology is one of the core technologies in the information age. It is the basic technology and basic means to build an educational information environment and promote the application of information technology in education. It is one of the most basic and widely used technologies in the field of educational technology. The main content of this course is the basic concepts, principles and methods of computer networks based on the OSI (Open Systems Interconnection) model as the theoretical system and the TCP/IP system as the application system. Discuss the main functions, principles, protocols and equipment at each level of the TCP/IP architecture including the physical layer, data link layer, network layer, transport layer, and application layer. Its purpose is to enable students of the Department of Educational Technology to understand the basic working principles of computer networks, the layered structure of computer networks, the main network protocols, main network interconnection devices, main network service configurations and recent years through the study of this course. The latest development of network technology lays a foundation for them to use LAN and Internet to build an educational information environment, promote the application of computer networks in education, teaching and related fields, and solve practical problems in teaching and life.
2. The nature, purpose and task of the course
"Computer Network" is a compulsory subject-based course for educational technology majors. Through the study of this course, students are expected to have a comprehensive understanding of the basic knowledge of computer networks; to be familiar with commonly used network communication protocols and network architecture; to understand common network interconnection devices; to master the configuration methods of common network interconnection devices; Local area network; master the construction and configuration of commonly used network services; have preliminary network management and maintenance capabilities.
3. Basic requirements for course teaching
(1) Introduce the latest achievements in the development of network technology, expand teaching content, and ensure the real-time and cutting-edge teaching content; (2)
Standardize course experiments and practical training, and improve the assessment of course experiments and practical training system, increase the proportion of experimental results in course evaluation, highlight the practical application of network knowledge and the cultivation of students' hands-on ability; (
3) enable students to understand the basic concepts and knowledge of computer networks; Two main architectures OSI and TCP/IP architecture;

(4) Master the functions and protocols of the physical layer, data link layer, network layer, transport layer, application layer, etc.; Equipment configuration;
(6) Master the principle and configuration of VLAN and TRUNK, and be familiar with IP subnet planning;
(7) Master the principle, configuration and application of DNS, WEB, FTP, DHCP and other common network services;
(8) Understand wireless networks , Network security and network management related knowledge.
4. Teaching means and methods
combined with the teaching content of the "Computer Network" course is highly logical and the education technology major emphasizes practicality and application characteristics and requirements in the teaching of this course. It is oriented by the overall grasp of the knowledge system and Focusing on problem solving and thinking training, adopting the "logical problem teaching method" as the main teaching method, through careful teaching design, the content system of the computer network course is contained in the closely related, serialized and contextualized content of the real life. In the problem system, comprehend and learn network knowledge with problem-solving thinking, and understand and build the computer network knowledge system with the logical relationship between network knowledge. At the same time, the combination of real (real experiment environment) and virtual (Cisco network simulation software), offline (classroom lectures, real experiments) and online (BB platform, course blog), teaching and independent learning (watch BB platform Videos and tutoring materials) combined teaching methods to expand students' learning time and space as much as possible, and make full use of network means and digital learning resources to optimize teaching.
V. Assessment methods and performance evaluation
(1) Assessment methods
A closed-book exam is used. The basic requirements of the test questions are to determine the scope of the test and the assessment requirements according to the content stipulated in this syllabus. The test questions cover all chapters, and the key content is properly highlighted. At the same time, due to the practical and applied features of "Computer Network", the examination focuses on the understanding, analysis and application of knowledge. The types of test questions include multiple choice questions, fill in the blank questions, analysis questions and application questions. Among them, about 40% of the objective questions are for the investigation of basic knowledge points, and the difficulty is relatively small. Comprehensive questions such as analysis questions and application questions account for about 60%, and it is difficult to focus on students' ability to analyze and apply relevant knowledge.
(2) Performance evaluation
The general evaluation results are composed of closed-book examination results, experimental results and usual results. The experimental results account for 40% of the total evaluation results, and the test results account for 60%. At the same time, depending on the students' usual performance, points will be deducted in the final general evaluation as appropriate.
6. Course teaching content , key points and
difficulties 3. The composition of the Internet (1) The edge part of the Internet (2) The core part of the Internet 4. The development of computer networks in China 5. The types of computer networks (1) The definition of computer networks (2) Several different types of networks 6 1. Performance of computer network (1) Performance index of computer network (2) Non-performance characteristics of computer network 7. Computer network architecture (1) Formation of computer network architecture (2) Protocol and division level (3) Five layers Protocol Architecture



















(4) Entities, protocols, services and service access points
(5) TCP/IP architecture
Focus: Basic concepts and performance indicators of computer networks, computer network architecture, circuit switching, message switching, packet switching
Difficulties: computer network System structure, circuit switching, message switching, packet switching
Chapter 2 Physical layer
1. Basic concepts of physical layer
2. Basic knowledge of data communication
(1) Model of data communication system
(2) Several basic concepts of channels
3 , Transmission media below the physical layer
(1) Guided transmission media
(2) Unguided transmission media
4. Channel multiplexing technology
(1) Frequency division multiplexing, time division multiplexing and statistical time division multiplexing
5. Broadband access Input technology
(1) ADSL technology
(2) Fiber-optic-coaxial hybrid network (HFC network)
(3) FTTx technology
Key points: physical layer functions, channel multiplexing technology, guided transmission media
Difficulties: channel multiplexing technology
Chapter 3 Data Link layer
1. Data link layer using point-to-point channel
(1) Data link and frame
(2) Three basic issues
2. Point-to-point protocol PPP
(1) Features of PPP protocol
3. Data link layer using broadcast channel
(1) Data link layer of LAN
(2) CSMA/CD protocol
4. Ethernet using broadcast channel
(1) Star topology using hub
(2) MAC layer of Ethernet
5. Extended Ethernet
(1) Extending Ethernet at the physical layer
(2) Extending Ethernet at the data link layer
Key points: functions of the data link layer, CSMA/CD protocol, MAC address 1. The working principle of the switch, the function and configuration of VLAN
Difficulties: the function and principle of the switch, the function, principle and configuration of VLAN
Chapter 4 Network layer
1. Two services provided by the network layer
2. Internet Protocol IP
(1) Virtual Internet Connecting the network
(2) Classified IP addresses
(3) IP addresses and hardware addresses
(4) Address Resolution Protocol ARP
(5) The flow of forwarding packets at the IP layer
3. Internet routing protocols
(1) Several routing protocols Basic concepts
(2) Internal gateway protocol RIP
(3) Composition of routers)
4. Network address translation NAT
key points: network layer functions, relationship between IP addresses and hardware addresses, forwarding process of network layer data packets, router functions, principles And configuration
Difficulties: configuration of routing protocols and routers
Chapter 5 Transport Layer
1. Overview of transport layer protocols
(1) Communication between processes
(2) Two main protocols of transport layer
(3) Ports of transport layer
2. User data Report protocol UDP
(1) Overview of UDP
3. Overview of Transmission Control Protocol TCP
(1) The main characteristics of TCP
(2) TCP connection
4. The working principle of reliable transmission
(1) Stop waiting protocol
5. TCP transport connection management
(1) TCP connection establishment
(2) TCP connection release
Key points: transport layer functions, TCP and UDP Protocol features, reliable transmission principle
Difficulties: connection and release of TCP protocol
Chapter 6 Application layer
1. Domain Name System DNS
(1) Overview of Domain Name System
(2) Internet Domain Name Structure
(3) Domain Name Server
2. File Transfer Protocol
(1) ) FTP overview
(2) Basic working principle of FTP
3. World Wide Web WWW
(1) Overview of World Wide Web
(2) Uniform Resource Locator URL
(3) Hypertext Transfer Protocol HTTP
(4) World Wide Web documents
4. Dynamic Host Configuration Protocol DHCP
5 Simple Network Management Protocol SNMP
Focus: Function and configuration of DNS, function and configuration of WWW service, function and configuration of FTP service, function and configuration of DHCP service Difficulty: function and configuration of
DNS, function and configuration of DHCP service
VII. Course Requirements for each teaching link
(1) Classroom lectures
are mainly based on teacher lectures, problem-oriented, combining theory with practice, comprehensively applying various media methods, fully mobilizing students' autonomy, and systematically explaining the concepts, principles, applications, and configurations of computer networks and operation. To enable students to establish a systematic and complete knowledge structure.
(2) Experimental link
The experimental content is set based on the important principles of computer networks, key equipment, common applications and services. Focus on comprehensive and design experiments to strengthen students' awareness of network application and hands-on ability. Put forward strict requirements for course experiments, provide comprehensive experimental guidance, standardize the experimental evaluation system, and submit experimental reports on time and with high quality after the experiment. Increase the intensity of experimental assessment and increase the proportion of experimental results in the overall evaluation of the course.
8. Assignment of class hours
Assignment of class hours in each teaching link of teaching content Homework
Remarks
Main content of chapters Lectures, experiments, discussions, exercises, and extracurricular subtotals Chapter 1 Overview
1.
Computer The role of the network in the information age
2. Internet overview
3. The composition of the Internet 4. The development of
computer networks in China 5. The types of computer networks 6. The performance of computer networks 7. Computer network architecture 4 4 ​​Chapter 2 Physical layer 1. Basic concepts of the physical layer 2. Basic knowledge of data communication 3. Transmission media below the physical layer 4. Channel multiplexing technology 5. Broadband access technology 2 2 4 Chapter 3 Data link layer 1. Using point-to-point channels Data link layer 2. Point-to-point protocol PPP 3. Data link layer using broadcast channel 4. Ethernet using broadcast channel 5. Extended Ethernet 4 4 8 Chapter 4 Network layer 1. Two services provided by the network layer 2. Internet Protocol IP



















3. Internet Routing Protocol
4. Network Address Translation NAT 5 4 9
Chapter 5 Transport Layer 1. Overview of Transport Layer Protocol
2. User Datagram Protocol UDP
3. Overview of Transmission Control Protocol TCP
4. Working Principle of Reliable Transmission
5. TCP Transport Connection Management 2 2
Chapter 6 Application Layer 1. Domain Name System DNS
2. File Transfer Protocol
3. World Wide Web WWW
4. Dynamic Host Configuration Protocol DHCP
5. Simple Network Management Protocol SNMP 3 2 5
Total 20 12 32
9. Courses Connection with other courses
Before learning "Computer Network", students should have basic knowledge of computer software and hardware. It should be opened after studying "Computer Culture Foundation" and other related courses.
10. Prerequisite course
"Basics of Computer Culture"
11. Textbooks and Teaching Reference Books
(1) Textbooks
Xie Xiren. computer network. ISBN: 9787121201677. Beijing: Electronic Industry Press, 2013.6, Sixth Edition.
(2) Teaching Reference Books
[1] Ma Shilai. Computer Network Practical Technology Course. ISBN: 9787302146179. Beijing: Tsinghua University Press, 2010.6, No. Second Edition.
[2] Wu Yi. Computer Network Configuration, Management and Application. ISBN: 9787040256369. Beijing: Higher Education Press, 2009.1, Second Edition.
[3] (US) Zai Yi, (US) MacDonald, (US) Rufe, translated by Cisco Systems. Cisco Network Technology Academy Tutorial CCNA Exploration: Network Basics. ISBN: 9787115190628. Beijing: People's Posts and Telecommunications Press ,2009.1, first edition.
[4] (US) Graziani (Graziani, R.), (US) Johnson (Jihnson, A.), translated by Cisco Systems, Inc. Cisco Networking Academy Tutorial CCNA Exploration:
Routing Protocols and Concepts. ISBN: 9787115190642. Beijing: People’s Posts and Telecommunications Press, 2009.1, First Edition.
5 Andrew S. Tanenbaum, translated by Pan Aimin. Computer Networks (Chinese Edition). ISBN: 7302089779. Beijing: Tsinghua University Press, 2010.8, the fourth edition.