Your network contains an Active Directory Domain Services (AD DS) forest. The forest contains three domains. Each domain contains 10 domain controllers. You plan to store a DNS zone in a custom…

`ntdsutil.exe` is the command-line utility used to create custom application directory partitions (also known as application partitions) in Active Directory. These custom partitions are ideal for hosting DNS zones, and `ntdsutil.exe` provides the functionality to define their replication scope, targeting specific domain controllers for data synchronization.

Active Directory Sites and Services is primarily used for managing the physical topology of Active Directory and replication between sites, not for creating custom application partitions.

Set-DnsServer is a PowerShell cmdlet used for configuring settings on a DNS server (like forwarding or root hints), but not for creating Active Directory partitions.

DNS Manager is a graphical tool for managing DNS zones and records, but it does not provide functionality to create or manage custom Active Directory application partitions directly.