High-Availability & Redundancy for Directory Services

Front

What is the purpose of DHCP Fail-over?

Back

Ensure continuous DHCP service even if one server fails.

Front

How do two DHCP servers work in Fail-over mode?

Back

They share a single IP pool and synchronize lease data.

Front

What are the two modes of DHCP Fail-over?

Back

Load-balancing and Hot-standby.

Front

What is the challenge with DHCP in routed networks?

Back

DHCP broadcasts don’t cross routers by default.

Front

What is a DHCP Relay Agent?

Back

A component that forwards DHCP messages on a router or server.

Front

What is the purpose of Read-Only Domain Controllers (RODC)?

Back

Deployed in untrusted locations to host a read-only copy of Active Directory.

Front

What are the installation steps for RODC?

Back

1. Pre-stage in AD, 2. Delegate installation rights, 3. Configure Password Replication Policy, 4. Pre-cache credentials.

Front

What is Azure AD?

Back

Microsoft’s cloud identity service for apps like Office 365 and Intune.

Front

What is a limitation of Azure AD?

Back

Lacks Group Policy Objects (GPOs), LDAP binds, and on-prem features of AD DS.

Front

What is a Cloneable Domain Controller?

Back

A server added to the Cloneable Domain Controllers group for rapid deployment.