{
  "context": "This criteria evaluates how well an engineer uses the azure-batch package to create a pool configuration with multiple VM types. The focus is on proper usage of pool configuration classes, virtual machine configuration setup, and image references for different node types.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Pool configuration class",
      "description": "Uses PoolAddParameter or similar pool configuration class from azure.batch.models to create the pool configuration object",
      "max_score": 25
    },
    {
      "name": "VirtualMachineConfiguration usage",
      "description": "Creates and uses VirtualMachineConfiguration class to specify VM settings including image reference and node agent SKU",
      "max_score": 25
    },
    {
      "name": "ImageReference configuration",
      "description": "Uses ImageReference class to specify Ubuntu 20.04 LTS image with appropriate publisher, offer, SKU, and version parameters",
      "max_score": 20
    },
    {
      "name": "Node agent SKU",
      "description": "Specifies appropriate node_agent_sku_id for Ubuntu in the VirtualMachineConfiguration (e.g., 'batch.node.ubuntu 20.04')",
      "max_score": 15
    },
    {
      "name": "Dedicated nodes configuration",
      "description": "Correctly sets target_dedicated_nodes parameter in the pool configuration",
      "max_score": 5
    },
    {
      "name": "Low-priority nodes configuration",
      "description": "Correctly sets target_low_priority_nodes parameter in the pool configuration to support cost optimization",
      "max_score": 10
    }
  ]
}