nslookup in Windows: DNS troubleshooting from basic queries to AD diagnostics
Every DNS problem in a Windows environment starts the same way: something that should resolve doesn’t, and you need to know why.…
Networking and DNS
Network and DNS troubleshooting on Windows: ipconfig, netstat, route, tracert, nslookup and the PowerShell network cmdlets.
IP Subnetting Cheat Sheet
Complete IPv4 and IPv6 subnetting reference. Subnet masks, CIDR notation, binary breakdown, private ranges, VLSM examples, and key formulas.
Internet speed tests in Windows from CMD and PowerShell
Testing a connection through a browser means loading a page, waiting for ads and reading a gauge that rounds everything. On a…