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Appian Architecture - high availability - software engine failover {Ans: 1. Requires min 1 cluster with 2 engine nodes, 3 Kafka nodes, and 3 zookeeper nodes 2. Appian recommends 3 engine nodes 3. Primary engine server replicates data to secondary and tertiary 4. Only supported in Linux}Integrations - why use a Connected System design object? {Ans: The connected system object uses the properties of the external system, such as base URL, and authentication. Once you create a connected system object, you can reuse it for different use cases that connect to an external system}Appian Health Check - process sizing tab {Ans: 1. Record process instance memory usage 2. Helps estimate future memory usage 3. Shows if process engine servers are properly sized}Expression - when is a list of dictionary typically created? {Ans: 1. returned from an integration 2. returned from a DB query}Appian Health Check availability {Ans: From 19.4 health included with Appian by default, no need to deploy separately}Database normalization benefits {Ans: Data redundancy is limited Data integrity is maintained}Relational databases - volume testing guidance {Ans: At the beginning, establish volume estimates for all the key entities in the system, load the