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EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:
1. In an Apache Spark Streaming environment, what acts as an entry point to the streaming system and provides methods to create and transform DStreams?
A) Receiver
B) Streams API
C) StreamingContext
D) Spark Core
2. What is the purpose of sensor operators in Apache Airflow?
A) Use a poke method to monitor external processes
B) Use triggers to report each successive retry
C) Perform validation checks in parallel
D) Move data sequentially from one system to another
3. What is a significant advantage of using a columnar store NoSQL database for analytical workloads?
A) Real-time data synchronization
B) High-speed transaction processing
C) Optimized query performance on large datasets
D) Efficient storage of hierarchical data
4. What is the default replication factor for HDFS?
A) 2
B) 3
C) 4
D) 6
5. Match each major support project of Hadoop with its definition.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: Only visible for members |
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