Final answer:
ZooKeeper provides several services, with maintaining configuration information and providing distributed synchronization being two key offerings. It is not responsible for loading bulk data into a Hadoop cluster or directly handling user authentication and auditing.
Step-by-step explanation:
The two services provided by ZooKeeper mentioned in the options B and C are maintaining configuration information and providing distributed synchronization. Option A, loading bulk data into an Hadoop cluster, is not a ZooKeeper service; this is typically handled by tools designed specifically for Hadoop data ingestion like Apache Flume or Sqoop. Option D, authenticating and auditing user access, is not a direct service provided by ZooKeeper either; it is more related to security and may be handled by other components within a distributed system.
- ZooKeeper's main role in maintaining configuration information is to hold and manage the configuration data for all the nodes in a distributed system. It ensures that configuration across the system is consistent and up-to-date, which is crucial for the system's reliability and availability.
- For distributed synchronization, ZooKeeper helps in coordinating the processes across a distributed environment. It provides a shared namespace and synchronization primitives that can be used for locking, ordering tasks, and group services.