究極のガイド準備D-DS-OP-23認証試験Dell Data Scienceは2025年更新
リアルD-DS-OP-23問題集でEMC正確なアンサーは最新問題は2025年更新
質問 # 28
What is the default replication factor for HDFS?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
質問 # 29
Why is it important to control the capabilities of a workload during runtime in Kubernetes?
- A. Apply API authorization on a cluster
- B. Enable management of application secrets
- C. Support data exfiltration from a pod
- D. Limit resource usage on a cluster
正解：D
質問 # 30
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. Streams API
- B. Spark Core
- C. Receiver
- D. StreamingContext
正解：D
質問 # 31
Refer to the exhibit.
Which shows a table named Student.
What changes must be made to the table in order to achieve 1NF?
- A. Split table into two tables named Student and Zip
- B. Split table into two tables named Student and DoB
- C. Make Zip the primary key in the table
- D. Remove duplicate rows in the table
正解：D
質問 # 32
In Python, which data type is one dimensional and immutable?
- A. Tuple
- B. List
- C. Array
- D. Set
正解：A
質問 # 33
What step in a query plan determines the best execution path for the provided query?
- A. Execution
- B. Algebrizer
- C. Optimizer
- D. Parser
正解：C
質問 # 34
What is a significant advantage of using a columnar store NoSQL database for analytical workloads?
- A. High-speed transaction processing
- B. Efficient storage of hierarchical data
- C. Optimized query performance on large datasets
- D. Real-time data synchronization
正解：C
質問 # 35
What is a metadata management challenge?
- A. Data corruption over time
- B. Ensuring availability of source systems
- C. Leveraging the information from distributed sources
- D. Information sources are limited
正解：C
質問 # 36
Which of the following best describes the purpose of database normalization in a relational database schema?
- A. Improving query performance
- B. Enforcing referential integrity
- C. Reducing data redundancy
- D. Increasing data security
正解：C
質問 # 37
What is the main programming language supported by Apache Spark?
- A. Python
- B. Ruby
- C. Java
- D. C++
正解：A
質問 # 38
What is characteristic of HBase?
- A. Tool that performs real-time write operations on large datasets using Key/Value pairs
- B. High-level language platform for analyzing and querying large data sets stored in HDFS
- C. Tool that combines SQL, streaming, and complex analytics
- D. Data warehouse infrastructure that can compile SQL queries and run the jobs in cluster
正解：A
質問 # 39
What is a common application of IoT tools?
- A. Processing large-scale batch data
- B. Monitoring real-time sensor data
- C. Managing relational databases
- D. Analyzing static datasets
正解：B
質問 # 40
A company needs to fill an opening for a key tactical data governance position. The new hire is to be a subject matter expert on customer data and ensure the data policies and standards are adhered to on a daily basis. This role bridges the gap between a data governance program and its execution.
What is a suitable job title for this role?
- A. Data engineer
- B. Data steward
- C. Data scientist
- D. Data miner
正解：B
質問 # 41
In Python, which type of non-linear list always has a common root?
- A. Queues
- B. Stacks
- C. Graphs
- D. Trees
正解：D
質問 # 42
What is the primary use of sets in Python?
- A. Storing ordered sequences
- B. Storing key-value pairs
- C. Storing unique elements
- D. Storing hierarchical data
正解：C
質問 # 43
What enables Pravega to rapidly ingest streaming data into durable storage?
- A. MongoDB
- B. Append-only logs
- C. Apache Spark
- D. Relational database schema
正解：B
質問 # 44
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. Highly Normalized
- B. Graph
- C. Star
- D. Columnar
正解：C
質問 # 45
An organization wants to simplify the data ingestion configuration process through simple click, drag, and drop type actions.
Which tool provides an easy to use graphical user interface for building data pipeline data flows?
- A. Apache Airflow
- B. Apache Pig
- C. Apache Hadoop
- D. Apache Spark
正解：A
質問 # 46
In a data analytics project, what is the primary responsibility of a data engineer?
- A. Designing machine learning models
- B. Creating data visualizations
- C. Conducting statistical analysis
- D. Building data pipelines and ETL processes
正解：D
質問 # 47
An organization plans to establish a data governance process for a data lake.
What is the correct sequence of steps required to implement the process?
- A. 1. Define the roles and responsibilities of actors within the data governance process
2. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
3. Operationalize the data governance process and assist the deployment team
4. Understand the current and future states of data governance and identify remaining gaps - B. 1. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
2. Define the roles and responsibilities of actors within the data governance process
3. Operationalize the data governance process and assist the deployment team
4. Understand the current and future states of data governance and identify remaining gaps - C. 1. Define the roles and responsibilities of actors within the data governance process
2. Operationalize the data governance process and assist the deployment team
3. Understand the current and future states of data governance and identify remaining gaps
4. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment - D. 1. Define the roles and responsibilities of actors within the data governance process
2. Operationalize the data governance process and assist the deployment team
3. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
4. Understand the current and future states of data governance and identify remaining gaps
正解：C
質問 # 48
The penalty that the EU supervisory authority levies on an organization that fails to comply with the General Data Protection Regulation (GDPR) is the greater of 4% of total global annual turnover or revenue, or a fixed fine amount.
What is the fixed fine amount, in millions of Euros?
- A. 0
- B. 1
- C. 2
- D. 3
正解：A
質問 # 49
Which of the following data structures in Python is immutable?
- A. Tuple
- B. List
- C. Set
- D. Dictionary
正解：A
質問 # 50
Which NoSQL database type is most suitable for applications requiring high-speed, low-latency data retrieval based on simple lookups?
- A. Key-value store
- B. Column-family store
- C. Time-series database
- D. Document store
正解：A
質問 # 51
What is a characteristic of the Kerberos role in a Hadoop ecosystem?
- A. Used for authentication and authorization
- B. Bind-based authentication
- C. Designed to access directory services
- D. Secure user identification over insecure network
正解：D
質問 # 52
What is the purpose of memory management in Apache Flink?
- A. Ensure no disk space is ever required
- B. Eliminate the need for serialization of the data
- C. Convert all of the data into Java objects
- D. Control how much memory the runtime operations use
正解：D
質問 # 53
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