Skip to content

furkankorhan/it-troubleshooting-playbook

Repository files navigation

IT Troubleshooting Playbook

Network troubleshooting checklist preview

A practical troubleshooting playbook for common IT support situations.

The goal is simple: when something does not work, do not guess first. Check the basics, collect evidence, then decide the next step.

Playbooks

Focus

This repository starts with network troubleshooting because it is one of the most common support situations:

  • internet connection problems
  • wrong or missing IP configuration
  • DNS problems
  • DHCP problems
  • gateway/router problems
  • basic terminal checks

Short German Explanations

Begriff Kurze Erklärung
IP-Adresse Eine Adresse, mit der ein Gerät im Netzwerk erreichbar ist.
DNS Übersetzt Domainnamen wie google.com in IP-Adressen.
DHCP Verteilt automatisch IP-Adressen und Netzwerkeinstellungen.
Gateway Der Router, über den ein Gerät andere Netzwerke erreicht.
Ping Testet, ob ein Ziel erreichbar ist und wie lange die Antwort dauert.

What This Repository Shows

  • I can structure a technical problem step by step.
  • I know the basic difference between IP, DNS, DHCP and gateway.
  • I can use terminal commands to collect information.
  • I document technical topics in a simple and readable way.
  • I am building this repository as practical proof for IT system and support fundamentals.

Interview Practice Sentences

Ich prüfe zuerst, ob das Gerät eine gültige IP-Adresse hat.
Danach teste ich das Gateway und die DNS-Auflösung.
Ich ändere nicht sofort Einstellungen, sondern sammle zuerst Informationen.

Example Command Outputs

ping -c 3 192.168.1.1
64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=3.2 ms
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=2.8 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=3.0 ms
nslookup google.com
Server:  192.168.1.1
Address: 192.168.1.1#53

Non-authoritative answer:
Name: google.com
Address: 142.250.185.14

Next Improvements

  • Add screenshots or example command outputs
  • Add a printable checklist
  • Add a German-only version for interview practice
  • Add more scenarios: slow PC, full storage, printer problem, software installation issue

About

Practical IT troubleshooting playbook for network, DNS, DHCP, gateway and terminal checks.

Topics

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

 
 
 

Contributors