A is incorrect: Relying on a single, unfiltered knowledge source can inundate the search with extraneous information, decreasing precision and negatively impacting the agent's experience.
B is correct: Role-based access controls ensure adherence to policies and relevance by limiting agents' visibility to only the knowledge content authorized and relevant to their specific roles.
C is correct: Activating semantic search employs AI to understand user intent and context, thereby significantly improving the relevance of results from external knowledge sources.
D is incorrect: Deactivating synonyms and stemming typically reduces search versatility and can adversely affect recall, leading to less effective search outcomes.
E is incorrect: Daily full reindexing can be resource-intensive and is often unnecessary; incremental updates are generally more efficient unless significant changes require a complete reindex.
F is correct: Incremental data refreshing minimizes latency and resource usage by updating only modified content, which guarantees efficient and current knowledge updates.