1.
When creating a new cluster in the Azure Databricks workspace, what happens behind the scenes?
2.
In Azure Databricks, High Concurrency clusters terminates automatically after 120 minutes, by default.
3.
Use ................. to return records from a Dataframe to the driver of the cluster
4.
What happens to Databricks activities (notebook, JAR, Python) in Azure Data Factory if the target cluster in Azure Databricks isn't running when the cluster is called by Data Factory?
5.
Azure Databricks is a ................... platform.
6.
You are designing an Azure Databricks table. The table will ingest an average of 20 million streaming events per day. You need to persist the events in the table for use in incremental load pipeline jobs in Azure Databricks. The solution must minimize storage costs and incremental load times. What should you include in the solution?
7.
How do you list files in DBFS within a notebook?
8.
You are a data engineer implementing a lambda architecture on Microsoft Azure. You use an open-source big data solution to collect, process, and maintain data. The analytical data store performs poorly. You must implement a solution Provide data warehousing, Reduce ongoing management activities and Deliver SQL query responses in less than one second, Which type of cluster should you create?
9.
In Azure Databricks platform architecture, the web app and cluster manager is part of the ...................
10.
You can create a cluster without creating a Databricks workspace
11.
In Azure Databricks platform architecture, the ................hosts Databricks jobs, notebooks with query results, the cluster manager, web application, Hive metastore, and security access control lists (ACLs) and user sessions.
12.
In Azure Databricks, the default cluster mode is ...............
13.
..................... allows Azure to terminate the cluster after a specified number of minutes of inactivity.
14.
What happens if the command option("checkpointLocation", pointer-to-checkpoint directory) is not specified?
15.
Which of the following statements describes a wide transformations?
16.
Which DataFrame method do you use to create a temporary view?
17.
In Azure Databricks, A .................. is recommended for a single user, it can run workloads developed in any language: Python, SQL, R, and Scala.
18.
A Serverless Pool is self-managed pool of cloud resources that is auto-configured for interactive Spark workloads.
19.
In Delta Lake architecture, Which tables contain raw data ingested from various sources (JSON files, RDBMS data, IoT data, etc.)?
20.
You are creating a new notebook in Azure Databricks that will support R as the primary language but will also support Scala and SQL. Which switch should you use to switch between languages?
21.
You have an Azure Databricks workspace named workspace1 in the Standard pricing tier. You need to configure workspace1 to support autoscaling all-purpose clusters. The solution must automatically scale down workers when the cluster is underutilized for three minutes, minimize the time it takes to scale to the maximum number of workers, and minimize costs. What should you do first?
22.
What is the Python syntax for defining a DataFrame in Spark from an existing Parquet file in DBFS?
23.
Scaling vertically means .................
24.
In Azure Databricks, High Concurrency clusters can run workloads developed in Scala.
25.
.................. is a unified processing engine that can analyze big data using SQL, machine learning, graph processing, or real-time stream analysis
26.
A pipeline is a logical grouping of activities that together perform a task
27.
...................... is a transactional storage layer designed specifically to work with Apache Spark and Databricks File System (DBFS).
28.
In Azure Databricks, only ............. supports table access control.
29.
The driver and the executors are
30.
You can only run up to ................. concurrent jobs in Databricks workspace
31.
Use ........... and .............. to remove duplicate data in a DataFrame
32.
When doing a write stream command, what does the outputMode("append") option do?
33.
................. is a scalable real-time data ingestion service that processes millions of data in a matter of seconds.
34.
VNet peering is only required if using the standard deployment without VNet injection.
35.
What is an Azure Key Vault-backed secret scope?
36.
The ............... is a big data processing architecture that combine both batch- and real-time processing methods.
37.
You can deploy Azure Databricks using ....................
38.
In which modes does Azure Databricks provide data encryption?
39.
In the cluster, the second level of parallelization is the .....................
40.
You need to find the average of sales transactions by storefront. Which of the following aggregates would you use?
41.
What's the primary supported language in Apache Spark?
42.
Databricks was founded by the creators of ..........................
43.
How do you create a DataFrame object?
44.
To parallelize work, the unit of distribution is a Spark Cluster. Every Cluster has a Driver and one or more executors. Work submitted to the Cluster is split into what type of object?
45.
Which statement about the Azure Databricks Data Plane is true?
46.
You plan to build a structured streaming solution in Azure Databricks. The solution will count new events in five-minute intervals and report only events that arrive during the interval. The output will be sent to a Delta Lake table. Which output mode should you use?
47.
The maximum number of jobs that a Databricks workspace can create in an hour is ..............
48.
Delta Lake integrates tightly with Apache Spark, and uses an open format that is based on ....................
49.
In Spark Structured Streaming, what method should be used to read streaming data into a DataFrame?
50.
What steps are required to authorize Azure DevOps to connect to and deploy notebooks to a staging or production Azure Databricks workspace?
51.
Apache Spark Structured Streaming is a fast, scalable, and fault-tolerant stream processing API
52.
In Azure Databricks, A .................. provide fine-grained sharing for maximum resource utilization and minimum query latencies, it can an run workloads developed in SQL, Python, and R.
53.
In cluster, each parallelized action is referred to as ................
54.
In Azure Databricks, You can change the cluster mode after a cluster is created.
55.
Each Driver has a number of Slots to which parallelized Tasks can be assigned to it by the Executor.
56.
You can read and write data that's stored in Delta Lake by using ............
57.
A ............ is a collection of cells to execute code, to render formatted text, or to display graphical visualizations.
58.
How do you perform UPSERT in a Delta dataset?
59.
In Databricks, maximum of number of Azure Databricks API calls/hour is ........
60.
............... is a fully-managed version of the open-source Apache Spark analytics and data processing engine.
61.
Which method for renaming a DataFrame's column is incorrect?
62.
In Databricks, the first user to login and initialize the workspace is the .............
63.
What command should be issued to view the list of active streams?
64.
............... is a data ingestion and transformation service that allows you to load raw data from over 70 different on-premises or cloud sources.
65.
You create an Azure Databricks cluster and specify an additional library to install. When you attempt to load the library to a notebook, the library in not found. You need to identify the cause of the issue. What should you review?
66.
You plan to perform batch processing in Azure Databricks once daily. Which type of Databricks cluster should you use?
67.
You can only attach a notebook for a running cluster.
68.
Use the ............... function to display a small set of rows from a larger DataFrame
69.
Use the .................... function to display a DataFrame in the Notebook
70.
........................ is the authorization system you use to manage access to Azure resources.
71.
How can parameters be passed into an Azure Databricks notebook from Azure Data Factory?
72.
The Delta Lake Architecture is a vast improvement upon the traditional Lambda architecture.
73.
Every Cluster has a one executor and one or more drivers.
74.
The first level of parallelization is the ........................ that is a JVM running on a node, typically, one executor instance per node.
75.
As Azure Limit, Virtual Machines (VMs) per subscription per region is ..............
76.
................ is an open-source format, supported by many data platforms, including Azure Synapse Analytics.
77.
Which feature of Spark determines how your code is executed?
78.
You have an Azure Databricks resource. You need to log actions that relate to compute changes triggered by the Databricks resources. Which Databricks services should you log?
79.
What is required to specify the location of a checkpoint directory when defining a Delta Lake streaming query?
80.
In cluster, each Job is broken down into ..............
81.
What're the characteristics of the "3 Vs of Big Data"?
82.
................ is the number of which is determined by the number of cores and CPUs of each node.
83.
Scaling horizontally means .................
84.
In Azure Databricks, ............................. requires at least one Spark worker node in addition to the driver node to execute Spark jobs.
85.
Which cluster modes are supported in Azure Databricks?
86.
It is possible to put an Azure Databricks Notebook under Version Control in an Azure Devops repo
87.
Which command orders by a column in descending order?
88.
The supported Databricks notebook format is the ................ file type.
89.
Which is the correct syntax for overwriting data in Azure Synapse Analytics from a Databricks notebook?
90.
How many drivers does a Cluster have?
91.
................ automates your release process up to the point where human intervention is needed, by clicking a button.
92.
In Spark Application, the ................ is the JVM in which our application runs.
93.
In Databricks, each workspace is identified by a globally unique 53-bit number, called .................
94.
What is a lambda architecture and what does it try to solve?
95.
In Azure Databricks, ............................. has no workers and runs Spark jobs on the driver node.
96.
In Delta Lake architecture, Which tables provide a more refined view of our data?
97.
As Azure Limit, Resource groups per subscription is ..............
98.
What's the purpose of linked services in Azure Data Factory?
99.
In Azure Databricks platform architecture, the ................ contains all the Databricks runtime clusters hosted within the workspace.
100.
The first step to using Azure Databricks is to create and deploy a .........................
101.
Use ............... to remove columns from a DataFrame
102.
..................... enables you to capture the audit logs and make then centrally available and fully searchable.
103.
Driver programs access Apache Spark through a .................... object regardless of deployment location.
104.
You can use your notebook to run a code without attaching it to a cluster
105.
As Azure Limit, the Storage accounts per region per subscription is .............
106.
What are the two prerequisites for connecting Azure Databricks with Azure Synapse Analytics that apply to the Azure Synapse Analytics instance?
107.
When using the Column Class, which command filters based on the end of a column value? For example, a column named verb and filtered by words ending with "ing".
108.
Spark has optimized sharing data from one worker to another operation by using a format called ............
109.
................. is a fundamental isolation unit in Databricks.
110.
To use your notebook with another cluster, what should you do?
111.
What is the Databricks Delta command to display metadata?
112.
In Azure Databricks, You can use both Python 2 and Python 3 notebooks on the same cluster.
113.
In Databricks, the notebook interface is the .............. program
114.
How do you infer the data types and column names when you read a JSON file?
115.
A Cluster can have drivers running in parallel.
116.
.................. is the blade that you use to assign roles to grant access to Azure resources.
117.
................... are groups of computers that are treated as a single computer and handle the execution of commands issued from notebooks.
118.
Which languages are supported in Apache Spark?
119.
...................... takes a step further by removing the human intervention and relying on automated tests to automatically determine whether the build should be deployed into production.
120.
....................... is the in-memory storage format for Spark SQL, DataFrames & Datasets.
121.
............. is currently the most secure way to access Azure data services from Azure Databricks.
122.
In cluster, the results of each Job (parallelized/distributed action) is returned to the ...............
123.
How do you cache data into the memory of the local executor for instant access?
124.
What sort of pipeline is required in Azure DevOps for creating artifacts used in releases?
125.
To set a Spark configuration property called password to the value of the secret stored in secrets/apps/acme-app/password, Which syntax is correct?
126.
Which command specifies a column value in a DataFrame's filter? Specifically, filter by a productType column where the value is equal to book?
127.
In Databricks, The maximum number of notebooks or execution contexts attached to a cluster is ............
128.
What does Azure Data Lake Storage (ADLS) Passthrough enable?
129.
Use ............ to select a subset of columns from a DataFrame
130.
In Delta Lake architecture, Which tables provide business level aggregates often used for reporting and dashboarding?
131.
If you create a DataFrame that will read some data from Azure Blob Storage, and then you create another DataFrame by filtering the initial DataFrame. What feature of Spark causes these transformation to be analyzed?
132.
In Cluster, the first level of parallelization is the .....................
Are you sure, you would like to submit your responses on Azure Databricks Questions and Answers and view your results?
