Learning Objectives
5 objectives- Understand the fundamental concepts and components of data networks and their architecture.
- Explain key network protocols and how they enable communication between devices.
- Analyze IP addressing schemes and perform subnetting for efficient network design.
- Evaluate network security principles and apply best practices to protect data communication.
- Demonstrate knowledge of network management, monitoring, and quality of service mechanisms.
Content Outline
PreviewUnit 4606: Data Networks Fundamentals
1. Introduction to Data Networks
1.1 Purpose of Networks
- Definition and importance of data networks
- Benefits of networking
1.2 Types of Networks
- Local Area Networks (LAN)
- Wide Area Networks (WAN)
- Metropolitan Area Networks (MAN)
1.3 Network Components
- Routers: Function and role
- Switches: Operation and types
- Hubs: Characteristics and limitations
1.4 The OSI Model
- Overview of the 7 layers
- Functions of each layer
- How the OSI model facilitates communication
2. Network Protocols
2.1 Role of Protocols in Networks
- Definition and importance
- Protocol suites vs individual protocols
2.2 Key Protocols
- TCP/IP: Structure and usage
- HTTP: Web communication
- FTP: File transfer
- Additional protocols: SMTP, DNS, DHCP
2.3 Protocol Operation
- Connection-oriented vs connectionless protocols
- Protocol stacks and encapsulation
3. Ethernet and Wireless Networks
3.1 Ethernet Networks
- Ethernet standards (e.g., 10BASE-T, 100BASE-TX, Gigabit Ethernet)
- Cable types (twisted pair, fiber optic, coaxial)
- Network configurations and topologies
3.2 Wireless Networks
- Wi-Fi standards (802.11a/b/g/n/ac/ax)
- Wireless access points and devices
- Security considerations (WEP, WPA, WPA2, WPA3)
3.3 Comparison: Ethernet vs Wireless
- Advantages and disadvantages
- Performance and reliability differences
4. IP Addressing and Subnetting
4.1 IP Address Structure
- IPv4 addressing format
- IPv6 addressing format and benefits
4.2 Subnet Masks
- Purpose and usage
- Default subnet masks by class (A, B, C)
4.3 Subnetting
- Concepts and calculation techniques
- CIDR notation
- Subnetting examples and exercises
4.4 Role of IP Addressing in Routing
- Address resolution
- Routing decisions using IP addresses
5. Routing and Switching
5.1 Routing Concepts
- Purpose of routing
- Routing algorithms (distance vector, link state)
5.2 Routing Protocols
- RIP (Routing Information Protocol)
- OSPF (Open Shortest Path First)
- BGP (Border Gateway Protocol) overview
5.3 Switching Concepts
- Role of switches in LANs
- MAC address tables
- Frame forwarding methods
6. Network Security
6.1 Network Threats and Vulnerabilities
- Types of attacks (DoS, phishing, man-in-the-middle)
- Common vulnerabilities
6.2 Security Countermeasures
- Encryption basics
- Firewalls and their types
- Intrusion Detection Systems (IDS)
6.3 Best Practices
- Network segmentation
- Access control
- Security policies and user education
7. Quality of Service (QoS) in Networks
7.1 Understanding QoS
- Definition and importance
- Impact on data transmission
7.2 QoS Mechanisms
- Traffic classification and prioritization
- Bandwidth management
- Latency, jitter, and packet loss considerations
7.3 Implementing QoS
- Examples in Ethernet and wireless networks
- QoS protocols and standards
8. Network Management and Monitoring
8.1 Network Management Overview
- Objectives and challenges
- Network management models
8.2 Network Management Protocols
- SNMP (Simple Network Management Protocol)
- Other protocols and tools
8.3 Monitoring Tools
- Performance monitoring
- Troubleshooting strategies
- Alerts and reporting
8.4 Performance Optimization
- Network tuning
- Capacity planning
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