50 IBM A1000-051 Practice Questions: Question Bank 2025

A team wants to run Hive queries and Spark applications on a Hadoop cluster while sharing the same data in HDFS. Which IBM BigInsights component is primarily responsible for providing these shared data services to compute engines?

A data engineer needs to ingest a continuous stream of web click events into Hadoop with near real-time landing for downstream analytics. Which approach best fits this requirement?

A security administrator must ensure that only members of the 'Finance' group can read a specific Hive table stored in HDFS, while other users can still query different tables. Which control is the most appropriate to enforce this requirement?

After deploying a new node, the cluster shows the node as healthy, but no YARN containers are being scheduled on it. Which configuration area should an administrator check first?

A business analyst needs interactive SQL on data stored in HDFS with acceptable performance on large datasets. Which design choice is most appropriate?

A team is designing a BigInsights cluster for multiple departments. They want to prevent one department’s heavy workloads from starving others while still sharing the same physical cluster. What is the best-practice approach?

A data governance requirement states that sensitive columns (for example, SSN) must be masked for most users but visible to a small set of auditors, without duplicating datasets. Which solution best meets this requirement?

A Spark job that previously ran successfully now fails during shuffle with out-of-disk-space errors on executor nodes. What is the most appropriate first remediation step?

A cluster must meet strict availability requirements. The NameNode is a single point of failure in the current design. Which architecture change best addresses this risk while keeping HDFS semantics intact?

A company needs to securely enable analysts to query external tables in Hive while ensuring that access is audited and restricted based on LDAP groups. Which combined approach is most appropriate?

A team wants to let analysts run SQL queries against data stored in HDFS without writing MapReduce jobs. Which BigInsights component best fits this requirement?

An administrator needs to copy relational database tables into HDFS on a scheduled basis for downstream Hadoop processing. Which tool is the best fit?

A developer needs to run a recurring workflow that first ingests data, then runs a Hive query, and finally triggers a notification step. Which capability should be used to coordinate these dependent steps in BigInsights?

A security team requires that Hadoop users authenticate with their corporate directory and that group membership be used for authorization decisions. Which approach best meets this requirement?

A cluster runs both long-running ETL jobs and ad-hoc interactive queries. Users complain that ETL jobs monopolize resources, causing interactive queries to wait. What is the best practice to address this on a YARN-based BigInsights cluster?

A compliance requirement states that sensitive data must be protected from disk theft and that access should be controllable at the file/directory level. Which combination best satisfies this requirement in Hadoop?

An application needs fast random reads/writes of individual records by key and must serve near real-time queries. Which storage component is most appropriate?

A Hive query suddenly fails with an error indicating a missing HDFS permission for the warehouse directory. The query previously worked for the same user. Which is the most likely cause?

A regulated environment requires that administrators be able to trace who accessed specific datasets and what actions were performed (read, write, delete), and to keep an immutable audit trail. What is the best approach?

A BigInsights cluster experiences intermittent application failures. Logs show that some YARN containers are killed shortly after start due to memory limits, even though nodes have sufficient physical RAM available. Which change is most likely to resolve the issue?

An analyst wants to explore a large HDFS dataset interactively and run SQL-like queries without writing MapReduce code. Which BigInsights component best fits this requirement?

A team needs to keep a copy of customer data in HDFS with access restricted to only a small group. They want permissions enforced at the file and directory level. Which approach best meets the requirement?

A cluster administrator is planning maintenance on a DataNode and wants to avoid job failures by ensuring blocks are moved off the node before it is taken down. What is the recommended action?

A data engineering team runs nightly ETL that includes a sequence of dependent steps: ingest raw files, run a transformation job, then load results into curated directories. They want retries, dependency management, and time-based scheduling. Which BigInsights/Hadoop service should they use?

A BigInsights cluster uses YARN. Several long-running Spark jobs are starving smaller interactive queries. The administrator wants to allocate predictable resources for interactive workloads while still supporting batch processing. What is the best approach?

A security team requires that users authenticate with enterprise credentials and that HDFS access be controlled based on centralized policies rather than only local UNIX permissions. Which design best addresses this?

A user reports that a Hive query is extremely slow. The data is stored in a single large file, and the query filters on a date column. The team can reorganize the dataset. What change most directly improves performance for date-based filtering at scale?

An organization wants to ingest application logs continuously into Hadoop with minimal loss, and they must handle bursts during peak hours. Which ingestion pattern is most appropriate?

A cluster has intermittent failures where YARN containers are killed due to exceeding memory limits, even though nodes have free memory overall. The administrator suspects misconfiguration at the YARN resource management layer. What is the best first diagnostic step?

A data governance requirement states that only authorized analysts can see certain columns (for example, SSN) in Hive tables, while still allowing broader access to non-sensitive columns in the same tables. What is the most appropriate solution approach?

A new data engineer wants to run an exploratory query that looks like SQL against data stored in HDFS without writing MapReduce code. Which BigInsights component best fits this requirement?

A team needs to run a recurring sequence of Hadoop jobs every night: ingest data, transform it, and then publish results. They want dependencies and retries managed automatically. Which approach is most appropriate in BigInsights?

An administrator wants to ensure that only a specific group can read a sensitive directory in HDFS. What is the most direct control to configure?

A user reports that their Hadoop job is waiting indefinitely in the queue and never starts. The cluster is otherwise healthy. What is the most likely initial area to check?

A retail company wants to combine clickstream logs in HDFS with customer profile data stored in an RDBMS to produce daily analytics. Which pattern is most appropriate?

A data science team needs to iteratively build a machine learning feature set that requires reusing intermediate results across multiple computations. Which processing framework is typically better suited than classic MapReduce for this use case?

A security audit requires that data access in Hadoop be controlled at a fine-grained level (for example, restricting specific Hive tables/columns to certain roles) and centrally managed. Which solution best addresses this requirement?

After a configuration change, several services fail to start, but the node is reachable and disk space is sufficient. What is the best next troubleshooting step?

A cluster must meet a requirement for high availability of the HDFS namespace so that a NameNode outage does not stop the cluster. Which architecture best satisfies this requirement?

A user can authenticate successfully but receives authorization errors when accessing Hive tables through a BI tool, even though HDFS permissions appear correct. Which is the most likely cause?

In an IBM BigInsights cluster, which component is primarily responsible for providing a web-based interface to browse HDFS files, submit jobs, and view job status for Hadoop services?

A data engineer wants to run an interactive SQL query against data stored in HDFS with low latency for exploration. Which BigInsights technology is best suited for this requirement?

An administrator needs to ensure only authorized users can access specific HDFS directories and Hive/Big SQL objects, using centralized policies and audit trails. Which approach best meets this requirement in BigInsights?

A team wants to standardize ingestion of daily relational data into HDFS and ensure the import can be re-run safely without creating duplicates. Which design is the best practice?

Users report that Big SQL queries to HDFS tables are slow after a recent data load. You suspect the optimizer has stale statistics. What is the most appropriate corrective action?

A security audit requires encryption of sensitive data at rest in HDFS and secure key storage with access controls. Which solution best satisfies this requirement in a BigInsights environment?

A workflow must run a daily sequence: ingest data, run a Hive/Big SQL transformation, then publish a success marker for downstream systems. Which BigInsights-aligned tool is most appropriate to orchestrate these dependent steps with retries and scheduling?

A BigInsights cluster uses YARN. Several applications remain in ACCEPTED state for an extended period, even though nodes appear healthy. Which is the most likely cause?

You need to expose multiple Hadoop UIs (NameNode, ResourceManager, Big SQL console) to users outside the cluster network while avoiding direct access to internal nodes. Which architecture best meets this requirement?

A BigInsights environment must enforce strong user authentication for all Hadoop services and enable user-to-user delegation in secure data access (e.g., service principals, ticket-based authentication). Which configuration best addresses this requirement?