uNaming Contexts are the boundaries for replication
uExisting naming contexts (NCs):
lConfiguration (enterprise-wide context)
lSite definition,
service configuration, replication topology
lSchema (enterprise-wide context)
lClasses, attribute mapping to objects
lDomains in enterprise (domain-wide context)
lEnterprise-wide context for partial replication to Global
Catalogs
lUsers, computers, other domain objects