WAN knowledge is an important part of networking fundamentals. This guide covers the concepts commonly used to compare connection types, choose links for remote locations, and troubleshoot wide-area connectivity.
Core WAN Concepts
- Dedicated and carrier-managed connections
- Broadband, cellular, and internet-based access
- VPN tunnels and encryption for secure remote connectivity
- MPLS and label-based forwarding concepts
- SD-WAN policies, path selection, and redundancy
Practice Areas
Be able to explain the difference between private and public transport, identify which option fits a business requirement, and recognise common symptoms such as high latency, packet loss, or an unavailable backup path.
Study Tip
Use simple network diagrams and lab exercises to compare primary and backup links. Relate each technology to availability, security, cost, and application performance.