[Aug 19, 2026] New 250-608 Exam Dumps with High Passing Rate
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NEW QUESTION # 71
A geospatial analyst is building a query in Greenplum to identify all stores within a 5 km radius of each customer location. The coordinates are stored as geometry points.
Which PostGIS function should they use in the WHERE clause?
- A. ST_Area(store_geom) < 5000
- B. ST_DWithin(customer_geom, store_geom, 5000)
- C. ST_Contains(customer_geom, store_geom)
- D. ST_Buffer(store_geom, 5) = customer_geom
Answer: B
NEW QUESTION # 72
What does the gptext-create utility primarily configure?
- A. New Greenplum segment nodes
- B. Solr collections and schemas
- C. Query rewriting rules
- D. Network bandwidth usage
Answer: B
NEW QUESTION # 73
A data analyst wants to train a logistic regression model in Greenplum to predict customer churn. They've structured a dataset with is_churned as the target and several numeric features.
Which steps should they take to complete model training using MADlib?
- A. Export the data to a CSV file and train using scikit-learn
- B. Use gpload to load the model weights
- C. Create a writable external table to store model predictions
- D. Use a SELECT statement to call madlib.logregr_train() on the dataset
Answer: D
NEW QUESTION # 74
Which open-source framework is integrated into Greenplum to support in-database machine learning?
- A. TensorFlow
- B. Apache Spark
- C. MADlib
- D. PyTorch
Answer: C
NEW QUESTION # 75
The ___ utility is used to safely shut down the entire Greenplum Database cluster.
Response:
- A. gpdown
- B. gpkill
- C. gpstop
- D. gpclose
Answer: C
NEW QUESTION # 76
Which component in Greenplum handles query planning?
- A. Query Dispatcher
- B. Query Optimizer
- C. Query Executor
- D. Coordinator Host
Answer: B
NEW QUESTION # 77
When performing segment recovery using gprecoverseg, which two modes are available?
(Choose two)
- A. Online incremental recovery
- B. Logical standby recovery
- C. Offline full recovery
- D. Master-only recovery
Answer: A,C
NEW QUESTION # 78
Which two operations are supported by the Greenplum utility gpbackup?
(Choose two)
- A. Cluster mirroring
- B. Backup compression
- C. Segment failover
- D. Table-level selective backup
Answer: B,D
NEW QUESTION # 79
Your production Greenplum cluster has a failed primary segment, and the system has automatically promoted the mirror. What should be your next best action as a database administrator?
- A. Reinstall the entire database
- B. Use gprecoverseg to resync and restore the failed segment
- C. Remove the mirror permanently
- D. Restart the master host to trigger mirror demotion
Answer: B
NEW QUESTION # 80
Greenplum uses the ___ clause in external table definitions to specify how input data is formatted, such as CSV or TEXT.
- A. FORMAT
- B. ENCODING
- C. OPTIONS
- D. LANGUAGE
Answer: A
NEW QUESTION # 81
You are asked to load a 10GB CSV file into Greenplum in the shortest possible time. You want to leverage Greenplum's parallelism and avoid unnecessary file duplication. What should you do?
- A. Use psql with COPY and load the entire file on the master node
- B. Create an external readable table pointing to the CSV file and query it directly
- C. Transfer the file to all segments manually and use gpload in non-parallel mode
- D. Load the file into a replicated table using INSERT INTO
Answer: B
NEW QUESTION # 82
The SQL function ___ is used in Greenplum to perform text-based queries against GPText collections.
- A. gptext_search()
- B. solr_index()
- C. gptext_extract()
- D. madlib_predict()
Answer: A
NEW QUESTION # 83
What is the default behavior of Greenplum when a segment mirror is down but the primary is still available?
- A. The system continues running in a degraded mode
- B. The system automatically fails over to the standby
- C. The database shuts down to protect data integrity
- D. Queries are blocked until the mirror is recovered
Answer: A
NEW QUESTION # 84
Which Greenplum utility is typically used to add new segment hosts to an existing cluster?
- A. gpinit
- B. gpload
- C. gpupgrade
- D. gpexpand
Answer: D
NEW QUESTION # 85
Which two formats are valid output types for MADlib prediction functions?
(Choose two)
- A. Predicted labels
- B. Probability values
- C. PNG charts
- D. JSON-formatted model binaries
Answer: A,B
NEW QUESTION # 86
Which statement is true about using gpload for loading data into Greenplum?
- A. It must be run from the master host
- B. It requires the source files to be in a database-compatible binary format
- C. It uses a YAML configuration to define load parameters
- D. It loads data serially for each segment
Answer: C
NEW QUESTION # 87
Greenplum uses the ___ library to support scalable, in-database machine learning for structured datasets.
- A. pandas
- B. MADlib
- C. keras
- D. sklearn
Answer: B
NEW QUESTION # 88
Which two machine learning techniques are supported by MADlib in Greenplum?
(Choose two)
- A. k-Means Clustering
- B. Neural Style Transfer
- C. Decision Tree Classification
- D. Reinforcement Learning
Answer: A,C
NEW QUESTION # 89
What are two advantages of using hexagonal grids (H3) over square grids in spatial analysis?
(Choose two)
- A. More accurate rendering in PostGIS maps
- B. Equal distance to adjacent cells
- C. Automatic color scaling for layers
- D. Lower spatial distortion at poles
Answer: B,D
NEW QUESTION # 90
How does the gpcheckperf tool assist Greenplum administrators?
- A. By creating performance reports from query plans
- B. By validating SQL syntax in stored procedures
- C. By running performance tests on interconnect bandwidth and latency
- D. By exporting system logs to CSV
Answer: C
NEW QUESTION # 91
What is the impact of using indexes on frequently filtered columns in Greenplum?
- A. Unpredictable data distribution
- B. Increased chance of deadlocks
- C. Faster lookups and improved query performance
- D. Slower query performance due to overhead
Answer: C
NEW QUESTION # 92
Which two statements about Greenplum table partitioning are true?
(Choose two)
- A. Partitioning allows the database to prune unnecessary data during queries
- B. You can define subpartitions within a partition
- C. Partitioned tables cannot be analyzed using EXPLAIN
- D. Partitions are automatically replicated across all segments
Answer: A,B
NEW QUESTION # 93
How can GPCC assist in identifying problematic queries?
- A. By highlighting queries with high resource usage in real time
- B. By exporting query results to external CSV files
- C. By removing queries from system logs
- D. By automatically terminating all long-running queries
Answer: A
NEW QUESTION # 94
Which two steps help improve ML model accuracy when using MADlib?
(Choose two)
- A. Normalizing numeric input features
- B. Splitting data into training and test sets
- C. Repartitioning tables to a single segment
- D. Rewriting queries using hash joins
Answer: A,B
NEW QUESTION # 95
What Greenplum component supports spatial indexing using hexagonal grids?
- A. MADlib
- B. H3
- C. PL/Container
- D. GPText
Answer: B
NEW QUESTION # 96
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