Application Troubleshooting For DevOps/Network Engineers

Learn full stack troubleshooting skills, TCP, HTTP/3, DNS, TLS, automated diagnostic, troubleshooting home labs included

It is crucial for Network Engineers and DevOps to learn full stack troubleshooting to prevent downtime disasters.

Full stack troubleshooting skills are essential now with the convergence of on-premises, cloud, and network automation.

Learn how to quickly pinpoint if the problem is network, server, or application layer.

Learn end-to-end troubleshooting up to the application layer for network, server, TCP, and HTTP. Run diagnostic tools to accelerate problem resolution for cross-team collaboration between Network, DevOps, and Sysadmins.

Learn how your browser connects to a web server from DHCP request to GET request. There is also coverage of API authentication methods for automation. Full stack troubleshooting knowledge is essential for interviews and career promotion.

Why Network Engineers, DevOps, and Developers Should Take This Course?

• Your application is not working and you don't know where to start

• You want to verify the network is not the problem

• Web application is slower across the internet with timeouts

• There is no network connection when starting my computer

• There is no response from my internet or backend server

• DNS is not working and your application is currently unavailable

• Application is not working after deployment to production

• Firewall rule could be blocking network or application traffic

• SSL/TLS certificate errors have your application or device down

It is essential that developers know how DNS resolution works on the internet and SSL/TLS encrypts in-transit data across the internet. WebTransport is the newest real-time protocol that leverages all the performance advantages of HTTP/3 for real-time applications.

• Learn how to troubleshoot web applications and APIs with automated diagnostic tools

• Learn how to troubleshoot server connection errors (NGINX, Apache, LiteSpeed)

• Learn how to troubleshoot SSL/TLS certificate errors and prevent downtime

• Learn how to identify and troubleshoot network vs server issues (full stack)

• Learn how to troubleshoot common DNS problems and name resolution

• Learn how to troubleshoot API authentication (tokens and keys)

• Learn how to troubleshoot errors from firewall rule traffic filtering

This course takes you from the fundamentals of web architecture to real-world troubleshooting, security, and performance analysis. Learn modern web application architecture from the ground up. Learn how web systems work behind the scenes — from HTTP, DNS, and TLS to load balancing, caching, and performance.

• Understand HTTP request/response including headers, payloads, and response codes.

• Compare single-tier vs multi-tier web designs and learn how to select the right architecture for scalability.

• Master browser caching and service workers for optimizing offline performance.

• Learn API security fundamentals with Basic Auth, JWT, and OAuth2.

• Learn how reverse proxies and load balancers enhance performance and availability.

• Free Python automated diagnostics tools included for web applications and APIs.

• Learn how to analyze server requests, network latency, and performance.

Learn important topics not covered in other courses. You will learn how to troubleshoot web applications for desktop and mobile devices. Learn the skills required to become an expert.

CISCONET Training Solutions is a certification training provider with thousands of students worldwide. 25+ years of Fortune 100 experience with network performance analysis, optimization, and troubleshooting.