Training Program in Troubleshooting and Network Administration

Network Fundamentals and Architecture

• Components of network infrastructure: switches, routers, firewalls.

• Differences between LAN, WAN, and other network types.

• OSI model and data transmission flow in networking.

Common Network Issues and Root Causes

• Identifying physical, logical, and configuration-related failures.

• Recognizing latency, bottlenecks, and connectivity loss.

• Tools for basic network diagnostics and verification.

IP Addressing and Subnetting

• Understanding IP addressing and subnet mask configuration.

• Troubleshooting IP conflicts and DHCP-related issues.

• Implementing static vs. dynamic IP configurations.

Routing and Switching Troubleshooting

• Diagnosing routing loops and unreachable networks.

• Troubleshooting VLAN misconfigurations and port issues.

• Ensuring proper gateway and routing table functionality.

Network Device Administration

• Managing configurations on switches and routers.

• Backing up and restoring device settings securely.

• Updating firmware and managing hardware lifecycle.

Monitoring Network Performance

• Using SNMP, NetFlow, and other monitoring protocols.

• Analyzing bandwidth usage and traffic patterns.

• Identifying performance degradation through metrics.

Wireless Network Troubleshooting

• Addressing interference, coverage gaps, and signal loss.

• Securing wireless networks through proper configuration.

• Managing authentication and client connectivity issues.

Server and Service Administration

• Managing DNS, DHCP, and file-sharing services.

• Troubleshooting service availability and response issues.

• Logging and analyzing system events for fault isolation.

Security and Access Control

• Managing firewalls, NAT, and port forwarding rules.

• Identifying unauthorized access and network scanning attempts.

• Implementing secure access through VPNs and ACLs.

Best Practices in Troubleshooting and Administration

• Documenting issues and maintaining troubleshooting logs.

• Creating maintenance schedules and update plans.

• Building resilient networks through preventive practices.