D-DS-OP-23 Dumps PDF 2024 Program Your Preparation EXAM SUCCESS [Q15-Q38]

QUESTION 15
What is a characteristic of the Kerberos role in a Hadoop ecosystem?

Bind-based authentication

Secure user identification over insecure network

Designed to access directory services

Used for authentication and authorization

QUESTION 16
Which of the following are data ingestion tools commonly used in the Hadoop ecosystem? (Select all that apply)

Apache Flume

Apache Kafka

Apache Sqoop

Apache Flink

Apache Beam

QUESTION 17
What ordered set of terms refers to the process in which data is sourced from a relational database, enriched and merged with other datasets, then stored in a data lake?

Atomicity, Consistency, and Isolation

Isolation, Atomicity, and Consistency

Extract, Transform, and Load

Extract, Load, and Transform

QUESTION 18
What ethical principle emphasizes that collected data should be used for its original intended purpose?

Data minimization

Purpose limitation

Transparency

Accountability

QUESTION 19
Which skill is crucial for a data engineer to effectively manage and optimize large-scale data processing systems?

Data analysis

Front-end development

Cloud computing

Graphic design

QUESTION 20
What is a data pipeline best practice related to Extract-Transform-Load (ETL) jobs?

ETL jobs should be flexible to source data changes such as new variables or attributes.

A failed ETL job should always be marked as completed so that any other scheduled jobs can execute.

ETL jobs should be manually executed and monitored to ensure the highest quality.

A failed ETL job should be re-run immediately without taking any corrective actions.

QUESTION 21
How is replication implemented in Redis?

Client-server communication protocol is used, whereby every client replicates data from the server

Data is shared among many computers to enable fault tolerance and data accessibility

Meta information is generated based on the client-server communication protocol

The developer copies and pastes the data in multiple databases

QUESTION 22
Which IoT data processing tool enables businesses to make real-time decisions to capitalize on the Analytics of Things (AoT)?

Pravega

Apache NiFi

Nautilus

Apache Kafka

QUESTION 23
Which of the following describes Apache Flink?

A distributed file storage system

A graph processing framework

A stream processing framework

A batch processing engine

QUESTION 24
What is the purpose of memory management in Apache Flink?

Convert all of the data into Java objects

Control how much memory the runtime operations use

Eliminate the need for serialization of the data

Ensure no disk space is ever required

QUESTION 25
What is a characteristic of Pig?

Performs real-time reads and writes in HDFS

Uses HiveQL to translate SQL queries into MapReduce jobs

Data warehouse infrastructure that manages jobs in the cluster

Alternative language to Java programming for MapReduce

QUESTION 26
What is metadata in the context of data governance?

Data encryption keys

Data quality metrics

Data access logs

Data about data

QUESTION 27
What is the data governance role that leverages the data for business purposes, such as increasing sales or reducing manufacturing costs?

Data steward

Data custodian

Security specialist

End user

QUESTION 28
Which of the following are components of the ETL process? (Select all that apply)

Extraction

Transmission

Loading

Transformation

Visualization

QUESTION 29
In Python, which primitive data type covers real rational and irrational numbers?

String

Integer

Float

Boolean

QUESTION 30
An organization has implemented an IoT solution in their environment to gain competitive advantage.
This solution generates huge volumes of streaming data from different sources.
The organization wants to leverage this data to provide predictive, actionable results. They need a real- time data processing tool that can process the data using a fault-tolerant, horizontally scalable method.
Which tool should the organization use?

Apache Ranger

Apache Oozie

Apache Storm

Apache Ambari

QUESTION 31
Which Cassandra data type represents a collection of key-value pairs, and is represented in curly brackets ({, }) and colon (:)?

List

Map

Set

UUID

QUESTION 32
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?

Star

Columnar

Highly Normalized

Graph

QUESTION 33
What is a primary task of a data engineer during a data analytics project?

Installing, configuring, testing, and maintaining operating systems, application software, and system management tools

Ensuring the successful initiation, planning, design, execution, monitoring, controlling, and closure of the project

Designing and integrating infrastructure, analyzing algorithms, modifying source code, and writing system instructions

Preparing the Big Data environment to be utilized by data scientists and other business stakeholders

QUESTION 34
In Python, which data type is one dimensional and immutable?

List

Array