D-DS-OP-23 Dell Data Engineering Optimize Dumps

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D-DS-OP-23 Dell Data Scientist and Data Engineering Optimize 2023 exam
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OP-23 exam.
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Dell Data Scientist and Data Engineering Optimize 2023 D-DS-OP-23 exam
free dumps questions are available below for you to study. 
Full version: D-DS-OP-23 Exam Dumps 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. Spark Core
C. Streams API
D. StreamingContext
Answer: D
2.What is a significant advantage of using a columnar store NoSQL database for analytical
workloads?
A. High-speed transaction processing
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B. Efficient storage of hierarchical data
C. Optimized query performance on large datasets
D. Real-time data synchronization
Answer: C
3.Which of the following are components of the Apache Spark Streaming architecture? (Select all that
apply)
A. Driver node
B. Worker node
C. Discretized streams (DStreams)
D. Kafka topics
E. HDFS storage
Answer: ABC
4.In Python, which type of non-linear list always has a common root?
A. Trees
B. Graphs
C. Queues
D. Stacks
Answer: A
5.What is a typical task of a data engineer during a data analytics project?
A. Transforming data into a format that can be easily analyzed
B. Planning and performing A/B testing
C. Exploring and examining data to find hidden patterns
D. Presenting financial benefits to executive stakeholders
Answer: A
6.Which IoT data processing tool enables businesses to make real-time decisions to capitalize on the
Analytics of Things (AoT)?
A. Pravega
B. Apache NiFi
C. Nautilus
D. Apache Kafka
Answer: C
7.You are designing a database for an e-commerce data warehouse. The data is normalized in 1NF
format and will be used to create data marts for different departments inside the organization.
Which schema type should be used for this requirement?
A. Star
B. Columnar
C. Highly Normalized
D. Graph
Answer: A
8.What are two Spark libraries?
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A. Spark SQL and GraphX
B. Spark NoSQL and RDD
C. Spark SQL and RDD
D. Spark NoSQL and GraphX
Answer: A
9.What is a primary task of a data engineer during a data analytics project?
A. Installing, configuring, testing, and maintaining operating systems, application software, and
system management tools
B. Ensuring the successful initiation, planning, design, execution, monitoring, controlling, and closure
of the project
C. Designing and integrating infrastructure, analyzing algorithms, modifying source code, and writing
system instructions
D. Preparing the Big Data environment to be utilized by data scientists and other business
stakeholders
Answer: D
10.In Python, which non-primitive data structure can only be a collection of primitive data types?
A. Array
B. Dictionary
C. Tuple
D. List
Answer: A
11.Match each major support project of Hadoop with its definition.
Answer:
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12.What is the data governance role that leverages the data for business purposes, such as
increasing sales or reducing manufacturing costs?
A. Data steward
B. Data custodian
C. Security specialist
D. End user
Answer: D
13.Which of the following best describes the purpose of database normalization in a relational
database schema?
A. Reducing data redundancy
B. Increasing data security
C. Improving query performance
D. Enforcing referential integrity
Answer: A
14.A manufacturing organization intents to minimize production costs by analyzing real-time data after
implementing IoT tools.
Which business driver would be affected if the organization follows this strategy?
A. Operational efficiency
B. Customer experience
C. New sources of revenue
D. Product choices
Answer: A
15.What step in a query plan determines the best execution path for the provided query?
A. Execution
B. Optimizer
C. Algebrizer
D. Parser
Answer: B
16.Match each data type with its corresponding Redis data structure.
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Answer:
17.Which of the following data structures in Python is immutable?
A. List
B. Dictionary
C. Tuple
D. Set
Answer: C
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