Correct Answer : All of the above
Explanation : Hazelcast’s distributed messaging system can improve performance by reducing the need for network traffic, improve scalability by allowing messages to be distributed across multiple nodes, and improve fault tolerance by providing redundancy and failover capabilities.
Correct Answer : IMap
Explanation : IMap is a distributed key-value store in Hazelcast that can be used for distributed caching.
Correct Answer : They are fully ACID-compliant
Explanation : Hazelcast’s distributed transactions are fully ACID-compliant, meaning they provide Atomicity, Consistency, Isolation, and Durability guarantees.
Correct Answer : Serialised
Explanation : Hazelcast saves queue entries in serialised form by default.