The document database service supports multiple instance types and can meet different business scenarios. Which of the following instance types is not supported by the document database service?

Question

Options

• ASingle node architecture
• BActive/standby architecture
• CReplica Set Architecture
• DCluster Architecture

• A
  7% (4)
• B
  79% (45)
• C
  4% (2)
• D
  11% (6)

Explanation

Active/standby architecture is not supported by document database services because this model is characteristic of relational database systems, not document-oriented databases, which use different replication and high-availability mechanisms. Single node architecture (A) is supported as a basic, standalone deployment suited for development or low-demand scenarios. Replica set architecture (C) is a core feature of document databases like MongoDB, providing redundancy and automatic failover through primary and secondary nodes. Cluster architecture (D) is also supported, enabling horizontal scaling across multiple shards to handle large datasets and high throughput. For the exam, remember that document databases speak in "replica sets" and "clusters," not "active/standby" - that pairing belongs to the world of relational databases.

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