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 111–120 of 186
You are configuring data distribution in Greenplum. What happens if you use ROUND ROBIN distribution?
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A
Data is evenly distributed across segments.
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B
All data goes to one segment.
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C
Data distribution is based on hash.
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D
Only one segment processes all queries.
Explanation
ROUND ROBIN ensures even distribution; the other options either concentrate or incorrectly define the distribution method.
Which service in Greenplum helps to facilitate parallel processing across distributed systems?
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A
Parallel Query Execution
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B
Database Migration Service
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C
Load Balancing Service
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D
Security Audit Service
Explanation
Parallel Query Execution allows simultaneous data processing, while the others do not facilitate parallelism directly.
A company needs to improve SQL performance in Greenplum. What optimization tactic should they consider?
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A
Increase replication factor
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B
Create partitioned tables
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C
Reduce disk storage
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D
Decrease number of segments
Explanation
Creating partitioned tables optimizes query performance, unlike the other options.
You are configuring a Greenplum cluster to handle high data throughput. What happens when you over-allocate resources?
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A
Slower query response time
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B
Improved overall performance
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C
Resource contention issues
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D
Increased data redundancy
Explanation
Over-allocating resources can lead to contention, degrading performance, while the others would be consequences of mismanagement.
Which service is primarily responsible for managing data in Greenplum?
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A
Master server
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B
Segment server
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C
Data distribution service
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D
Backup service
Explanation
Segment servers store and process the actual data, while the master server orchestrates the overall system.
A company needs to ensure their Greenplum database is highly available. Which configuration should they implement?
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A
Single Node Setup
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B
Master-only mode
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C
High Availability configuration
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D
Single Point of Failure strategy
Explanation
Implementing High Availability configuration ensures redundant components, increasing fault tolerance.
What happens when data distribution is uneven in a Greenplum cluster?
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A
Faster query performance
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B
Optimal resource utilization
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C
Increased workload complexity
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D
No impact on performance
Explanation
Uneven data distribution leads to certain segments being overworked, causing performance degradation.
Which service in Greenplum handles parallel processing of queries?
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A
Query Optimizer
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B
Data Distribution
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C
Postgres Backend
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D
Master Coordinator
Explanation
The Master Coordinator manages query parallelism and execution, while the others handle different functions or aspects of data management.
A company needs to optimize data loading. Which Greenplum feature should they use?
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A
Segment Replication
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B
gpfdist
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C
Greenplum Manager
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D
Background Writer
Explanation
gpfdist is a load balancer specifically designed for optimized data ingestion into Greenplum, unlike the other options.
What happens when you create a Greenplum table without specifying distribution keys?
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A
Uniform distribution across segments
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B
Exclusive distribution in a single segment
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C
Random distribution leading to inefficiencies
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D
Row count optimization occurs automatically
Explanation
Without distribution keys, data may be randomly assigned, leading to potential performance issues due to inefficient data management.