First 100 Flashcards by Wouter van der Valk

Descriptive Analytics tells you

What is most likely to occur in the future
What occurred in the past
Which actions you can perform to affect outcomes
Why something occurred in the past

What occured in the past

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Normalization Involves Eliminating relationships between database tables

Normalizing a database reduces data redundancy

Normalization improves data integrity

Yes

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An extract, transform, load (ETL) process requires

a matching schema in the data source and the data target
a target data store powerful enough to transform data
data that is fully processed before being loaded to the target data store
that the data target be a relational database

Data that is fully processed before being loaded to the target data store

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In batching processing

data is always inserted one row at a time
data is processed in real-time
latency in delivering data processing results is acceptable
processing can only execute serially

Latency in delivering data processing results is acceptable

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Transcribing audio files is an example of … analytics

cognitive
descriptive
predictive
prescriptive

cognitive

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Choose: Cognitive, Diagnostic, Descriptive, Predictive, Prescriptive

Why did sales increase last month

How do I allocate my budget to buy different inventory items?

Which people are mentioned in a company’s business documents

Diagnostic

Predictive

Descriptive

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The massively parallel processing (MPP) engine of Azure Synapse Analytics

distributes processing across compute nodes
distributes processing across control nodes
redirects client connections across compute nodes
redirects client connections across control nodes

distributes processing across compute nodes

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… is an object associated with a table that sorts and stores the data rows in the table based on their key values

A clustered index
A FileTable
A foreign key
A stored procedure

A clustered index

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A relational database is appropriate for scenarios that invlove a high volume of

changes to relationships between entities
geographically distributed wires
transactional wires
writes that have varying data structures

transactional writes

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Batch processing can output data to a file store

Batch processing can output data to a relational database

Batch processing can output data to a NoSQL database

Yes

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Your company plans to load data from a customer relationship management (CRM) system to a data warehouse by using an extract, load, and transform (ELT) process.
Where does data processing occur for each stage of the ELT process? To answer, drag the appropriate locations to the correct stages. Each location may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

Choose between An in-memory data integration tool, the CRM system, the data warehouse

Extract: The CRM system

Load: The data warehouse

Transform: An in-memory data integration tool

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A visualization that shows a university’s current student enrollment versus the maximum capacity is an example of … analytics

cognitive
descriptive
predictive
prescriptive

Descriptive

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Choose between Treemap, Key influencer, Scatter:

A chart of colored, nested rectangles that displays individual data points represented by the size and color of a relative rectangle

A chart that displays the major contributors of a selected result or value

A chart that shows the relationship between two numerical values

Treemap

Key influencer

Scatter

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You need to create an Azure Storage account.
Data in the account must replicate outside the Azure region automatically.
Which two types of replication can you use for the storage account?

A. zone-redundant storage (ZRS)
B. read-access geo-redundant storage (RA-GRS)
C. locally-redundant storage (LRS)
D. geo-redundant storage (GRS)

B. read-access geo-redundant storage (RA-GRS)

geo-redundant storage (GRS)

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PaaS database offerings in Azure require less setup and configuration effort than IaaS

PaaS in Azure provide end users with the ability to control and update the operating system version

All relation and non-relational PaaS offerings in Azure can be paused to reduce costs

Yes

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Which statement is an example of Data Manipulation Language (DML)?

A. REVOKE
B. DISABLE
C. INSERT
D. GRANT

INSERT

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You have a SQL query that combines customer data and order data. The query includes calculated columns.
You need to create a database object that would allow other users to rerun the same SQL query.
What should you create?

A. an index
B. a view
C. a scalar function
D. a table

B. A View

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A key/value data store is optimized for

enforcing constraints
simple lookups
table joins
transactions

simple lookups

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Which data type storage for the following. choose between image files, key/value pair and relationships between employees:

Azure Blob Storage

Azure Cosmos DB Gremlin API

Azure Table Storage

Image files

Key/value pairs

Relationships between employees

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What is the correct order

Azure Resource Group –> … –> … –> Folders –> Files

Choose: Azure Storage account, File share, Container

Azure storage account –> File Share

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What are two characteristics of real-time data processing? Each correct answer presents a complete solution.

A. Data is processed periodically
B. Low latency is expected
C. High latency is acceptable
D. Data is processed as it is created

B. Low Latency is expected
D. Data is processed as it is created

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Match the Azure Data Factory components to the appropriate descriptions. Choose between Dataset, Linked service, Mapping data flow, Pipeline

A representation of data structures within data stores

The information used to connect to external resources

A logical grouping of activities that performs a unit of work and can be scheduled

Dataset

Linked service

Pipeline

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Match the types of workloads to the appropriate scenarios. Choose between Batch and Streaming:

Data for a product catalog will be loaded every 12 hrs to a data wh

Thousands of data sets per second for online purchases will be loaded to a dwh in real-time

Updates to inventory data will be loaded to a dwh every 1 million transactions

Batch

Streaming

Batch

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Choose a standalone data analysis tool, the crm system, the dwh

Extract: The CRM system

Load: The dwh

Transform: A standalone data analysis tool

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Which statement is an example of Data Manipulation Language (DML)? A. REVOKE B. DISABLE C. CREATE D. UPDATE

Update

Creating closed caption text for audio files is an example of ... analytics cognitive descriptive predictive prescriptive

Descriptive

A visualization that illustrates a university's current student enrollment per department is an example of ... analytics cognitive descriptive predictive prescriptive

Descriptive

You need to create an Azure resource to store data in Azure Table storage. Which command should you run? A. az storage share create B. az storage account create C. az cosmosdb create D. az storage container create

D. az storage container create

The Azure Cosmos DB ... API enables the use of the SELECT statements to retrieve documents from Azure Cosmos DB Core (SQL) Gremlin MongoDB Table

Core (SQL)

You need to modify a view in a relational database by adding a new column. Which statement should you use? A. MERGE B. ALTER C. INSERT D. UPDATE

B. ALTER

ETL can reduce the transfer of sensitive data to destination systems ETL transforms data by using a compute resource independent of the source system and destination system ETL minimizes the time it takes to copy large volumes of data to destination systems

No Yes No

PostGreSQL on Azure VMs IaaS PaaS SaaS Azure Database for PostgreSQL IaaS PaaS SaaS

SaaS PaaS

Which Azure storage solution provides native support for POSIX-compliant access control lists (ACLs)? A. Azure Table storage B. Azure Data Lake Storage C. Azure Queue storage D. Azure Files

B. Azure Data Lake Storage

Reiational data is stored in a file system as unstructured data a hierarchical folder structure a tabular form of rows and columns comma-separated value (CSV) files

a tabular form of rows and columns

A block of code that runs in a database is called a stored procedure a table a view an index

a stored procedure

Choose: Cognitive, Diagnostic, Descriptive, Predictive, Prescriptive Why did sales increase last month? Provide specific guidance on how to allocate current budget to buy different inventory items Detect images of the company's logo included in PDF documents

Diagnostic Prescriptive Cognitive

Which type of database is Azure Database for PostgreSQL? A. Platform as a service (PaaS) B. Infrastructure as a service (IaaS) C. Microsoft SQL Server D. on-premises

A. Platform as a service (PaaS)

Which storage solution supports access control lists (ACLs) at the file and folder level? A. Azure Data Lake Storage B. Azure Queue storage C. Azure Blob storage D. Azure Cosmos DB

A. Azure Data Lake Storage

A ... is a chart of colored rectangles. THe size of the rectangles represent the relative value of each item Line chart matrix scatter treemap

Treemap

What is a characteristic of batch processing? A. The data ingested during batch processing must be processed as soon as the data is received. B. Large datasets must be split into batches of less than 1 GB before the data can be processed. C. There is a noticeable time delay between ingesting data and obtaining the data processing results. D. Batch processing can only process data that is structured.

C. There is a noticeable time delay between ingesting data and obtaining the data processing results

In a SQL Statement, ... are examples of aggregate functions FROM and WHERE GROUP BY and ORDER BY JOIN and MERGE MAX and MIN

MAX and MIN

A job that processes sales data once daily is an example of a batch workload A job that calculates a rolling average temperature reading is an example of a streaming workload A job that calculates average revenue per product for the last month is an example of a streaming workload

Yes Yes No

In a relational database, each row in a table has a different set of columns a key-value pair the same set of columns unstructured data

the same set of columns

Normalizing a database increases the throughput of writing transactions Analytics systems are more normalized than transactional systems Normalizing a database results in queries that require more joins

No No Yes

... natively support the analysis of relationships between entities Column family databases Document databases Graph databases Key-value stores

Graph databases

In an IaaS instance of Microsoft SQL Server on Azure, you manage the ... that hosts SQL server elastic pool MySQL server PostreSQL server virtual machine

Virtual Machine

Varying fields for each entity in a JSON document is an example of relational data semi-structured data structured data unstructured data

semi-structured data

Which property of a transactional workload guarantees that each transaction is treated as a single unit that either succeeds completely or fails completely? A. atomicity B. isolation C. durability D. consistency

A. atomicity

Which type of database contains nodes and edges? A. graph B. key/value C. columnar D. time series

A. graph

... is responsible for identifying which business rules must be applied to the data of a company A data analyst A data engineer A data scientist

A data analyst

Your company needs to implement a relational database in Azure. The solution must minimize ongoing maintenance. Which Azure service should you use? A. Azure HDInsight B. Azure SQL Database C. Azure Cosmos DB D. SQL Server on Azure Virtual Machines

B. Azure SQL Database

You are writing a set of SQL queries that administrators will use to troubleshoot an Azure SQL database. You need to embed documents and query results into a SQL notebook. What should you use? A. Microsoft SQL Server Management Studio (SSMS) B. Azure Data Studio C. Azure CLI D. Azure PowerShell

B. Azure Data Studio

Choose between Index, View, Table A database object that holds data A database object whose content is efined by a query A database object that helps improve the speed of data retrieval

Table View Index

You have an e-commerce application that reads and writes data to an Azure SQL database. Which type of processing does the application use? A. stream processing B. batch processing C. Online Analytical Processing (OLAP) D. Online Transaction Processing (OLTP)

D. Online Transaction Processing (OLTP)

When can you use an Azure Resource Manager template? A. to automate the creation of an interdependent group of Azure resources in a repeatable way B. to apply Azure policies for multi-tenant deployments C. to provision Azure subscriptions D. to control which services and feature administrators and developers can deploy from the Azure portal

A. to automate the creation of an interdependent group of Azure resources in a repeatable way

You have an Azure SQL database that you access directly from the Internet. You recently changed the public IP address of your computer. After changing the IP address, you can no longer access the database. You can connect to other resources in Azure. What is a possible cause of the issue? A. role-based access control (RBAC) B. Dynamic Host Configuration Protocol (DHCP) C. Domain Name Service (DNS) D. a database-level firewall

D. a database-level firewall

choose between: Azure Data Studio, Microsoft SQL Server Data Tools (SSDT), SSMS A graphical tool for managing SQL Server or Azure SQL databases that supports access, configuration, management and administration tasks A lightweight editor that can run on-demand SQL queries and view and save results as text, JSON, or Microsoft Excel files A development tool for building Azure SQL databases, Microsft SQL Server relational DBs, SQL Server Analysis Services (SSAS) data models, SSIS packages, and SSRS reports

SSMS, Azure Data Studio SSDT

Relational database tables contain columns and rows Indexes in a relational database describe the data types in a table A database view is a virtual table whose content is defined by a query

Yes No Yes

Which command-line tool can you use to query Azure SQL databases? A. sqlcmd B. bcp C. azdata D. Azure CLI

A. sqlcmd

Azure SQL Database includes a managed backup service Azure SQL Database has built-in high availability Azure SQL Database can use Azure Defender

Yes Yes Yes

You can use Azure Data Studio to query a Microsoft SQL Server big data cluster You can use SSMS to query an Azure Synapse Analytics data warehouse You can use MySQL Workbench to query Azure Database for MariaDB databases

Yes Yes Yes

PaaS database offerings in Azure provide built-in high availability PaaS in Azure provide configurable scaling options PaaS in Azure reduce the administrative overhead for managing hardware

Yes Yes Yes

You must apply operating system updates to Azure SQL databases regularly You need Microsoft 365 subscription to create an Azure SQL database You can use existing Microsoft SQL Server licenses to reduce the cost of Azure SQL databases

No No Yes

Which statement is an example of Data Definition Language (DDL)? A. SELECT B. JOIN C. UPDATE D. CREATE

D. CREATE

Azure Data Studio ca be used to query an Azure SQL database from a device that runs macOS SMSS enables users to create and use SQL notebooks Azure Data Studio can be used to restore a database

Yes No Yes

You are deploying a software as a service (SaaS) application that requires a relational database for Online Transaction Processing (OLTP). Which Azure service should you use to support the application? A. Azure Cosmos DB B. Azure HDInsight C. Azure SQL Database D. Azure Synapse Analytics

C. Azure SQL Database

What are two benefits of platform as a service (PaaS) relational database offerings in Azure, such as Azure SQL Database? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point. A. access to the latest features B. complete control over backup and restore processes C. in-database machine learning services D. reduced administrative effort for managing the server infrastructure

A. access to the latest features D. reduced administrative effort for managing the server infrastructure

If you have a PaaS database in Azure, you are responsible for applying operating system updates If you have a PaaS db in Azure, backups are performed automatically If you have a PaaS in Azure, you are responsible for installation of the db enginge

No Yes No

When you create an Azure SQL database, which account can always connect to the database? A. the Azure Active Directory (Azure AD) account that created the database B. the server admin login account of the logical server C. the Azure Active Directory (Azure AD) administrator account D. the sa account

B. the server admin login account of the logical server

Which statement is an example of Data Definition Language (DDL)? A. SELECT B. INSERT C. DELETE D. DROP

D. DROP

A team of developers has computers that run Windows 10 and Ubuntu Desktop. The developers need to connect to and query an Azure SQL database from each of their computers. The developers require code assistance features such as IntelliSense. What should the developers use? A. sqlcmd B. Microsoft SQL Server Management Studio (SSMS) C. Azure Data Studio D. Azure Data Explorer

C. Azure Data Studio

Transaprent Data Encryption (TDE) encrypts a column to protect data at rest and in transit queries and their results in order to protect data in transit the database to protect data at rest the server to protect data at rest

the database to protect data at rest

You need to ensure that users use multi-factor authentication (MFA) when connecting to an Azure SQL database. Which type of authentication should you use? A. service principal authentication B. Azure Active Directory (Azure AD) authentication C. SQL authentication D. certificate authentication

B. Azure Active Directory (Azure AD) authentication

What is a benefit of hosting a database on Azure SQL managed instance as compared to an Azure SQL database? A. built-in high availability B. native support for cross-database queries and transactions C. system-initiated automatic backups D. support for encryption at rest

B. native support for cross-database queries and transactions

By default, each Azure SQL database is protected by a network security group (NSG) a server-level firewall Azure Firewall Azure Front Door

a server-level firewall

You need to design and model a database by using a graphical tool that supports project-oriented offline database development. What should you use? A. Microsoft SQL Server Data Tools (SSDT) B. Microsoft SQL Server Management Studio (SSMS) C. Azure Databricks D. Azure Data Studio

A. Microsoft SQL Server Data Tools (SSDT)

Choose between: Authentication, Firewall, Encryption Prevent access to an Azure SQL database from another network Support Azure Active Directory sign-ins to an Azure SQL db Ensure that sensitive data never appears as plain text in an Azure SQL database

Firewall Authentication Encryption

You have a transactional application that stores data in an Azure SQL managed instance. When should you implement a read-only database replica? A. You need to generate reports without affecting the transactional workload. B. You need to audit the transactional application. C. You need to implement high availability in the event of a regional outage. D. You need to improve the recovery point objective (RPO).

A. You need to generate reports without affecting the transactional workload.

A relational database must be used when a dynamic schema is required data will be stored as key/value pairs storing large images and videos strong consistency guarantees are required

strong consistency guarantees are required

Relational data uses ... to enforce relationships between different tables Collections columns keys partitions

keys

You need to query a table named Products in an Azure SQL database. Which three requirements must be met to query the table from the internet? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point. A. You must be assigned the Reader role for the resource group that contains the database. B. You must have SELECT access to the Products table. C. You must have a user in the database. D. You must be assigned the Contributor role for the resource group that contains the database. E. Your IP address must be allowed to connect to the database.

B. You must have SELECT access to the Products table. C. You must have a user in the database. E. Your IP address must be allowed to connect to the database.

Which clause should you use in a SELECT statement to combine rows in one table with rows in another table? A. SET B. VALUES C. KEY D. JOIN

D. JOIN

Your company needs to ensure that an Azure virtual machine can connect to Azure SQL databases without exposing the databases to the internet. What should you use? A. Azure Application Gateway B. Azure Traffic Manager C. Azure DNS D. Azure Private Link

D. Azure Private Link

Choose: Azure SQL Database elastic pool, Azure SQL Database single database, Azure SQL Managed instance A serverless configuration A database that has the highest compatibility with on-premises Microsoft SQL Server A low-cost, low-maintenance database

Azure SQL Database single database, Azure SQL Managed instance Azure SQL Database elastic pool,

Which T-SQL statement should be used to instruct a database management system to use an index instead of performing a full table scan? A. SELECT B. WHERE C. JOIN

A. SELECT

... is a PaaS relational data service that uses massively parallel processing (MPP) Azure SQL Database Azure Synapse Analytics Azure Database for MariaDB SQL Server on Azure VM

Azure Synapse Analytics

... physically sorts the data in a table based on the values in a specified column a view a clustered index a stored procedure a nonclustered index

a clustered index

In a relational db, the ... uniquely identifies each row in a table foreign key primary key WHERE clause nonclustered index

primary key

Which Azure service provides the highest compatibility for databases migrated from Microsoft SQL Server 2019 Enterprise edition? A. Azure SQL Database B. Azure Database for MySQL C. Azure SQL Managed Instance D. an Azure SQL Database elastic pool

C. Azure SQL Managed Instance

Which setting can only be configured during the creation of an Azure Cosmos DB account? A. geo-redundancy B. multi-region writes C. production or non-production account type D. API

D. API

You have an Azure Cosmos DB account that uses the Core (SQL) API. Which two settings can you configure at the container level? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point. A. the throughput B. the read region C. the partition key D. the API

A. the throughput C. the partition key

Which storage solution supports role-based access control (RBAC) at the file and folder level? A. Azure Disk Storage B. Azure Data Lake Storage C. Azure Blob storage D. Azure Queue storage

B. Azure Data Lake Storage

You need to store data in Azure Blob storage for seven years to meet your company's compliance requirements. The retrieval time of the data is unimportant. The solution must minimize storage costs. Which storage tier should you use? A. Archive B. Hot C. Cool

A. Archive

Which type of non-relational data store supports a flexible schema, stores data as JSON files, and stores the all the data for an entity in the same document? A. document B. columnar C. graph D. time series

A. document

Choose: Cassandra API, Gremlin API, MongoDB API, Table API Graph data JSON documents Key/Value data

Gremlin API MongoDB API Table API

To configure an Azure Storage account to support both security at the folder level and atomic directory manipulation, enable the hierarchical namespace set Account kind to BlobStorage set Performance to Premium set Replication to Read-access geo-redundant storage (RA-GRS)

enable the hierarchical namespace

You can query a graph database in Azure Cosmos DB as a JSON document by using a SQL-like language as a partitioned row store by using Cassandra Query Language (CQL) as a partitioned row store by using Language-Integrated Query (LINQ) as nodes and edges by using the Gremlin language

as a JSON document by using a SQL-like language

When provisioning an Azure Cosmos DB account, which feature provides redundancy within an Azure region? A. multi-master replication B. Availability Zones C. the strong consistency level D. automatic failover

B. Availability Zones

What is a benefit of the Azure Cosmos DB Table API as compared to Azure Table storage? A. provides resiliency if an Azure region fails B. supports partitioning C. provides a higher storage capacity D. supports a multi-master model

D. supports a multi-master model

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