Unit 3878: Network System Administration

1. Introduction to Network System Administration

• Roles and responsibilities of a network administrator
• Key concepts: network management, configuration, maintenance, and performance
• Importance of network security in system administration

2. Network Topologies and Infrastructure

• Overview of network topologies
  • Star topology
  • Bus topology
  • Ring topology
  • Mesh and hybrid topologies (brief overview)
• Network infrastructure components
  • Routers: function and types
  • Switches: managed vs unmanaged
  • Servers: roles and types
  • Other devices: hubs, access points, firewalls

3. IP Addressing and Subnetting

• Basics of IP addressing
  • IPv4 and IPv6 overview
  • Public vs private IP addresses
• Subnetting fundamentals
  • Purpose and benefits
  • Subnet masks explained
  • Calculating subnets and hosts
• CIDR (Classless Inter-Domain Routing) notation
  • Representation and use cases
  • Aggregation and route summarization

4. Network Protocols and Services

• TCP/IP protocol suite overview
  • TCP vs UDP
• DHCP (Dynamic Host Configuration Protocol)
  • Role in IP address assignment
• DNS (Domain Name System)
  • Name resolution process
• Other important protocols
  • HTTP/HTTPS, FTP, SMTP, SNMP (brief overview)

5. Network Security Fundamentals

• Authentication methods
  • Passwords, multi-factor authentication
• Encryption basics
  • Symmetric vs asymmetric encryption
• Firewalls
  • Types: hardware and software firewalls
  • Configuration basics
• Intrusion Detection Systems (IDS)
  • Purpose and types
• Best practices for securing networks
  • Regular updates, patch management, access control

6. Network Monitoring and Troubleshooting

• Network performance monitoring tools and techniques
  • SNMP monitoring, packet sniffers, performance metrics
• Identifying network issues
  • Common problems: connectivity, latency, packet loss
• Troubleshooting methodologies
  • Step-by-step problem identification and resolution
• Documentation of issues and solutions

7. Virtualization and Cloud Computing in Network Administration

• Virtualization technologies
  • Overview of VMWare, Hyper-V
  • Benefits in network administration
• Cloud computing platforms
  • IaaS, PaaS, SaaS concepts
  • Popular platforms: AWS, Azure, Google Cloud
• Network management in virtual and cloud environments

8. Backup and Disaster Recovery

• Importance of backups and disaster recovery planning
• Backup strategies
  • Full, incremental, differential backups
  • On-site vs off-site backups
• Disaster recovery plans
  • Business continuity considerations
  • Testing and updating plans

9. Compliance and Regulatory Requirements

• Overview of common standards and regulations
  • GDPR (General Data Protection Regulation)
  • HIPAA (Health Insurance Portability and Accountability Act)
• Legal and ethical considerations in network administration
• Implementing compliance in network policies and procedures

10. Network System Administration Best Practices

• Documentation best practices
  • Network diagrams, configuration records
• Change management processes
  • Planning, approval, implementation, review
• Network optimization techniques
  • Performance tuning, capacity planning
• Continuous improvement strategies
  • Training, audits, feedback loops