Drools Module 04 Quiz

What are some use-cases of stateless Knowledge Is Everything (KIE) sessions in Drools?

• To manage long-running business processes

• To perform calculations or data manipulations where prior states are irrelevant

• To continuously monitor and react to streaming data

• To retain memory of processed facts

What is the 'modify' keyword used for in Drools?

• To create cross-products between different fact types

• To add new facts to the working memory

• To remove facts from the working memory

• To inform the Drools engine that a fact has been altered

What is the advantage(s) of using inference in Drools (More than one)?

• Breaks down complex decision-making processes into simpler, manageable rules

• Enables the rule engine to make decisions dynamically based on the current state of the working memory

• Increased computing power when running rules

• Reduces the need to hardcode every possible scenario

What is the purpose of cross-products in Drools?

• To manage long-running business processes

• To perform calculations or data manipulations where prior states are irrelevant

• To compare or combine data from different fact types within the rule engine

• To continuously monitor and react to streaming data

Which statements are true about stateful vs stateless sessions in Drools?

• Stateless sessions do not retain any memory, while stateful sessions retain memory of processed facts

• Stateful sessions require more resources to maintain state and respond to changes, while stateless sessions are more resource-efficient

• Stateful sessions are used for lightweight, one-off rule processing scenarios, while stateless sessions are ideal for complex scenarios where outcomes depend on evolving data

• Stateful sessions are aware of state changes over time and adapt rule processing accordingly, while stateless sessions are not aware of state changes and treat each session independently

Cross-Products in Drools is similar to which operation?

• SQL join

• Python `map( )`

• Lambda Expressions

• RegEx