IBM A1000-051 Practice Exam 2025: Latest Questions

In an IBM BigInsights cluster, which component is primarily responsible for distributing storage across multiple nodes and providing data locality for processing frameworks?

A team wants to run multiple data processing engines (for example, MapReduce and Spark) on the same Hadoop cluster while sharing resources fairly across departments. Which Hadoop service provides this shared resource management capability?

A data scientist wants to explore and analyze large datasets in Hadoop using SQL-like queries without writing Java MapReduce. Which tool is the best fit?

An administrator needs to enforce fine-grained authorization (who can access which HDFS directories, Hive tables, and HBase resources) across the cluster with centralized policy management. Which capability is most appropriate?

A batch ETL job is taking significantly longer after new data sources were added. The job reads many small files from HDFS and then runs aggregations. Which approach is a best practice to improve performance?

A company needs to regularly import customer reference data from an on-premises relational database into HDFS for analytics. The import must preserve table structure and support incremental loads. Which tool is typically used for this integration?

Users report that some submitted YARN applications remain in the ACCEPTED state for a long time even though the cluster appears healthy. Which is the most likely cause?

An architect wants to ensure high availability for the Hadoop filesystem namespace so that a NameNode failure does not cause a long outage. Which design is recommended?

A regulated enterprise must demonstrate who accessed sensitive Hive tables and when, and it must retain auditable logs centrally. Which solution best meets this requirement?

A Spark job reading a partitioned dataset stored in Hive is returning correct results but is much slower than expected. The dataset is partitioned by date, and the job filters on a specific date range. Which issue is most likely preventing partition pruning?

A team wants to run an interactive SQL query against data stored in HDFS without writing MapReduce code. Which component is most appropriate?

An administrator wants to ensure that only users in the 'analysts' group can read a sensitive HDFS directory, while others are denied. Which approach best enforces this requirement?

While monitoring a cluster, you notice that HDFS reports several blocks as under-replicated. What is the most likely purpose of increasing the replication factor for affected files?

A daily ETL pipeline must ingest raw logs into HDFS, transform them with a Hive job, and then run a final aggregation. The team wants these steps to execute in order with retries and alerting on failure. Which tool best fits this requirement?

A Spark job running on YARN frequently fails with container memory errors, even though the node has available RAM. Which configuration change is the best first step to address this?

A security review requires centralized authentication so that users log in with enterprise credentials and group membership can be managed outside the cluster. Which solution is most appropriate?

A data science team needs to run iterative machine learning algorithms efficiently on a large dataset stored in HDFS. Which processing approach is typically best suited?

A team is designing a storage layer for user profile lookups that require low-latency random reads and writes by key. Which BigInsights/Hadoop component best meets this requirement?

After a planned restart, several services fail to come up because they cannot establish leadership/coordination, and logs show repeated session expiration and quorum-related messages. Which underlying component issue is most likely?

A company must enforce fine-grained authorization: different groups should have different permissions on specific Hive databases, tables, and columns, with auditing of access. Which approach best meets these requirements in a Hadoop environment?

A team wants to let data scientists run ad-hoc SQL queries on data stored in HDFS without writing MapReduce or Spark code. Which component is the best fit?

A cluster is configured with Kerberos, but several users report they can authenticate and still receive "Permission denied" when reading files in HDFS. What is the MOST likely cause?

In a BigInsights cluster design, which role is primarily responsible for tracking HDFS metadata such as the namespace and block mappings?

A Hive query that performs a large join is running slowly and generates excessive network traffic. The tables are stored in HDFS. Which change is MOST likely to improve performance with minimal changes to the SQL logic?

After a planned restart, users report that jobs are accepted but remain in a waiting state indefinitely. The cluster nodes are reachable, and HDFS reads work. Which component issue is the MOST likely cause?