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EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:

1. What is a common application of IoT tools?

A) Monitoring real-time sensor data
B) Managing relational databases
C) Analyzing static datasets
D) Processing large-scale batch data

2. With Apache Kafka, what is an advantage of implementing the Publish/Subscribe messaging system over Point-to-Point messaging system?

A) Any message published to a topic is immediately received by all the subscribers to that topic
B) Messages stored are deduplicated automatically to increase the overall storage capacity of a topic
C) Any message published to a topic is received only by a few subscribers to that topic
D) Messages can be dynamically moved between topics to improve the overall throughput of the system

3. Which tools are used for security considerations in the Hadoop ecosystem? (Select all that apply)

A) Apache Ranger
B) Apache Atlas
C) Apache Sentry
D) Apache Knox
E) Apache Flink

4. How is replication implemented in Redis?

A) Data is shared among many computers to enable fault tolerance and data accessibility
B) Client-server communication protocol is used, whereby every client replicates data from the server
C) Meta information is generated based on the client-server communication protocol
D) The developer copies and pastes the data in multiple databases

5. What is the primary storage system used by the Hadoop ecosystem?

A) Cassandra
B) MongoDB
C) HDFS
D) Amazon S3

Solutions: