: Understand Domain Controllers , Global Catalog Servers , and Sites .
: Practice performing an Authoritative vs. Non-Authoritative restore of the AD database (NTDS.dit). Phase 5: Security & Modern Identity Secure your infrastructure against common attack vectors. Active Directory Infrastructure Self-Study Trai...
: Study how AD relies on DNS for service location (SRV records) and name resolution. Phase 2: Building Your Lab : Understand Domain Controllers , Global Catalog Servers
: Follow "Active Directory" tags on Stack Overflow or Reddit’s r/sysadmin. : Understand Domain Controllers
Before touching a server, you must understand the "why" behind the structure.