In Confluent Schema Registry, which topic stores the Avro schemas?

• A. Keyspace
• B. Topics
• C. Schema Registry Topic
• D. _schemas Kafka Topic

Answer: (D)

Schemas are kept in a dedicated Kafka topic managed by the Schema Registry. This internal topic provides durable, versioned storage so the registry can serve the right Avro schema to clients and keep multiple registry instances in sync. The topic is named __schemas (commonly referenced as the internal schema topic in docs). When a new schema is registered, its metadata and data are written to this topic, establishing a single source of truth for subject-version mappings. Clients retrieve schemas through the Registry, which reads from this topic to supply the requested version of the Avro schema.

Other options don’t fit because a keyspace belongs to Cassandra, not Kafka; a general “topics” label refers to ordinary data topics rather than the specialized storage the registry uses; and there isn’t a generic “Schema Registry Topic” name—its actual internal topic is __schemas.