Neo4j Practice Test 2026 | Exam Prep

In the context of Neo4j's ACID properties, which of the following best describes the "Isolation" aspect when multiple concurrent transactions modify the same nodes or relationships?

When designing a graph model for a social network in Neo4j, what is the primary consideration when deciding whether to represent a "friendship" as a relationship or as a node with multiple outgoing relationships?

Consider a scenario where you are building a recommendation engine using Neo4j. You have `(:User)` nodes and `(:Product)` nodes, with `(:User)-[:PURCHASED]->(:Product)` relationships. Which Cypher clause is most efficient for finding products that users who purchased product X also purchased, excluding product X itself?