Computer Networks and Communication
- Sciences
- 400 level
- 3 credit units
- 162 pages
- 11 units
This course provides a comprehensive overview of computer networks and communication technologies. It covers network classifications, reference models, and various network topologies. Students will learn about network devices, protocols, and administration, including TCP/IP and OSI models. The course also explores data transmission methods, multiplexing techniques, and medium access control, preparing students for effective network management and troubleshooting.
About this course
- Difficulty
- Intermediate
- Study hours
- 60 hours
- Maths
- Basic
- Content
- Theoretical, practical
- Practical work
- No
- Assignments
- Tutor marked assignments
- Final examination
What you'll read
The real module and unit structure of CIT423, taken from the course material NOUN publishes.
One paragraph, so you can see how it reads
CIT423 · UNIT 1: NETWORK CLASSIFICATION AND REFERENCE MODELS
Solution to this problem is to connect each device to a communication network. Computer network means interconnected set of autonomous systems that permit distributed processing of information.
What you should be able to do
- Classify different types of networks
- Explain the OSI and TCP/IP reference models
- Describe various network topologies
- Identify and explain the functions of network devices
- Understand routing and congestion control algorithms
What it prepares you for
- Network Administrator
- Network Engineer
- System Administrator
- IT Support Specialist
- Network Analyst
- Telecommunications
- Information Technology
- Healthcare
- Finance
- Education
Where it gets hard
The units students slow down on, and what makes each one heavy.
- Module 2: Network Devices and Technology
Unit 4: Integrated Service Digital Network (ISDN)
Integrated Service Digital Network (ISDN) requires understanding of complex signaling protocols and circuit-switched network concepts.
- Module 2: Network Devices and Technology
Unit 5: Asynchronous Transfer Mode (ATM)
Asynchronous Transfer Mode (ATM) involves understanding cell-based switching and quality of service parameters, which can be challenging to grasp.
A suggested way through it
13 weeks, about 28 hours in total. Yours will differ.
- Week 1Module 1: Introduction to Computer Networks
Unit 1: Network Classification and Reference Models · 2 hours
Define network classifications (LAN, MAN, WAN). Understand OSI and TCP/IP reference models. Identify functions of each layer in the models.
- Week 2Module 1: Introduction to Computer Networks
Unit 2: Network Structures · 2 hours
Describe star, ring, bus, and mesh topologies. Analyze advantages and disadvantages of each topology. Evaluate criteria for effective network design.
- Week 3Module 2: Network Devices and Technology
Unit 1: Network Technology · 2 hours
Explain LAN and WAN technologies. Differentiate between circuit switching and packet switching. Describe frame relay and ATM.
- Week 4Module 2: Network Devices and Technology
Unit 2: Network Devices–I · 2 hours
Describe repeaters, bridges, switches, and hubs. Explain how each device operates at different OSI layers. Analyze the purpose and functionality of each device.
- Week 5Module 2: Network Devices and Technology
Unit 3: Network Devices–II · 2 hours
Describe routers, gateways, and modems. Explain how each device operates at different OSI layers. Analyze the purpose and functionality of each device.
- Week 6Module 2: Network Devices and Technology
Unit 4: Integrated Service Digital Network (ISDN) · 2 hours
Explain the concept of ISDN. Understand the architecture and protocols of ISDN. Identify the applications of ISDN.
- Week 7Module 2: Network Devices and Technology
Unit 5: Asynchronous Transfer Mode (ATM) · 2 hours
Explain the concept of ATM. Understand the architecture and protocols of ATM. Identify the applications of ATM.
- Week 8Module 2: Network Devices and Technology
Unit 6: Data Transmission and Multiplexing · 2 hours
Explain data transmission methods. Understand multiplexing techniques (FDM, TDM). Differentiate between analog and digital signals.
- Week 9Module 2: Network Devices and Technology
Unit 7: Medium Access Control and Data Link Layer · 2 hours
Understand error-handling methods. Explain flow control methods. Identify MAC sublayer protocols (CSMA/CD, Token Passing).
- Week 10Module 3: Network Administration
Unit 1: Network Administration: Scope, Goals, Philosophy and Standards · 2 hours
Define network administration. Understand the scope and goals of network administration. Identify challenges in network administration.
- Week 11Module 3: Network Administration
Unit 2: Network Protocols · 2 hours
Explain the function of packets. Understand the layered approach to computer communications. Discuss different protocols and their uses.
- Week 12Module 3: Network Administration
Unit 3: Network, Transport and Application Layers · 2 hours
Explain the differences between network, transport, and application layers. Understand routing and congestion algorithms. Explain transport control mechanisms.
- Week 13Module 3: Network Administration
Final Revision · 4 hours
Review key concepts from all modules. Work on assignments and TMAs. Prepare for final examination.
Preparing for the exam
- Create concept maps linking OSI layers and their functions (Units 1-2)
- Practice subnetting and IP addressing (Units 3-5)
- Review routing protocols and their characteristics (Unit 6)
- Focus on network security concepts and best practices (Module 3)
- Review all TMAs and assignments for key concepts
Questions students ask about this course
What is CIT423 about?
This course provides a comprehensive overview of computer networks and communication technologies. It covers network classifications, reference models, and various network topologies. Students will learn about network devices, protocols, and administration, including TCP/IP and OSI models. The course also explores data transmission methods, multiplexing techniques, and medium access control, preparing students for effective network management and troubleshooting.
How many units does CIT423 have?
CIT423, Computer Networks and Communication, has 11 units across 3 modules, over 162 pages of course material. You can read it one unit at a time.
How many credit units is CIT423?
CIT423 carries 3 credit units, at 400 level in Sciences.
Is CIT423 hard?
CIT423 is rated intermediate level, with basic mathematical content. It is mostly theoretical and practical work.
How long does CIT423 take to study?
About 60 hours of study, spread across its 11 units.
How is CIT423 assessed?
CIT423 is assessed by assignments, tutor marked assignments and final examination.
What can I do with CIT423?
Network Administrator, Network Engineer, System Administrator, IT Support Specialist and Network Analyst.