Final answer:
Active Directory (AD) going down in one system does not cause another system's AD to go down. The impact of such a failure varies based on system configuration, backup systems, and redundancy measures. Other domain controllers might mitigate the impact in a multi-DC environment.
Step-by-step explanation:
When you ask 'What happens if my AD goes down? Does your AD go down too?', it seems like you are referring to Active Directory (AD), which is a directory service created by Microsoft for Windows domain networks. If your Active Directory goes down, it does not necessarily mean that another system's AD will also go down, as these are typically independent systems. The effect of an AD failure can range from users being unable to log in, to interruption in services that rely on AD for authentication and directory services.
A domain controller (DC) failure in a multi-DC environment would mean other DCs can continue to provide directory services until the failed DC is recovered or replaced. However, the scope and impact of an AD downfall can depend on the configuration of the network, the presence of backup systems, failover mechanisms and the design of the system's redundancy.