VMware
Tanzu Greenplum v7 Technical Specialist
250-608
Prepare for the 250-608 exam to validate your skills in Tanzu Greenplum v7.
186 questions
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Questions 31–40 of 186
Which service in Greenplum is responsible for query planning and optimization?
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A
Query Optimizer
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B
Data Transfer Service
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C
Storage Manager
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D
Scheduler
Explanation
The Query Optimizer prepares efficient execution plans, while others serve different functions.
A company needs to handle data ingestion from multiple sources. Which feature of Greenplum should they leverage?
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A
Federated Query
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B
Data Wrangler
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C
External Tables
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D
Indexing
Explanation
External Tables allow querying data without loading it; others don't directly support multi-source ingestion.
What happens when a Greenplum segment is down during a query execution?
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A
Query fails immediately
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B
Data is retrieved from backup
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C
Query continues on available segments
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D
System goes into read-only mode
Explanation
Greenplum distributes queries across segments; available segments continue processing while the down segment remains inactive.
Which service does Greenplum use for data processing?
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A
PostgreSQL-based query execution
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B
MapReduce job management
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C
In-memory data caching
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D
Container orchestration
Explanation
Greenplum is built on PostgreSQL for query execution, while others are not core features.
A company needs to ingest streaming data for analytics in Greenplum. Which option should they consider?
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A
Using gpfdist for file ingestion
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B
Implementing Apache Kafka integration
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C
Using only manual data inserts
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D
Relying on batch processing only
Explanation
Apache Kafka integration enables real-time streaming ingestion; other options are not suitable for streaming.
What happens when a Greenplum segment goes down?
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A
Data loss in the entire cluster
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B
Query automatically rerouted to remaining segments
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C
Cluster performance significantly improves
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D
Segment database becomes unreachable
Explanation
Queries are rerouted to available segments; other options are inaccurate regarding segment behavior.
Which service handles data queries in Greenplum?
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A
Greenplum Database
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B
Data Warehouse
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C
Hadoop Cluster
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D
Tableau Server
Explanation
Greenplum Database manages and processes data queries, while others serve different purposes.
A company needs to scale its Greenplum database quickly. What should they consider first?
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A
Increasing disk space
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B
Cluster configuration adjustments
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C
Backup frequency
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D
Data compression settings
Explanation
Adjusting cluster configuration allows for immediate scaling, while other options address different challenges.
What happens when a Greenplum segment fails?
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A
Database crashes immediately
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B
Query execution continues on other segments
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C
Data is lost permanently
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D
Cluster performance is unaffected
Explanation
Greenplum is designed for redundancy, allowing queries on other segments to continue despite failures.
Which service does Greenplum use for query optimization?
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A
Postgres Query Planner
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B
Greenplum Optimizer
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C
Data Distribution Service
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D
Indexing Service
Explanation
Greenplum uses its own optimizer to enhance query performance, while the Postgres Query Planner is not specific to Greenplum.