Amazon
Avaya
Cisco
CompTIA
CrowdStrike
EC-Council
EXIN
Fortinet
Google
ISC
ISC2
ITIL
Juniper
Microsoft
NVIDIA
Okta
Palo Alto Networks
Salesforce
SAP
ServiceNow
All Vendors
  1. Home
  2. Microsoft
  3. DP-420

Microsoft DP-420 Exam (page: 1)
Microsoft Designing and Implementing Cloud-Native Applications Using Azure Cosmos DB
Updated on: 31-Mar-2026

Viewing Page 1 of 13
DP-420 PDF 188 Questions

HOTSPOT (Drag and Drop is not supported).
You have an Azure Cosmos DB Core (SQL) API account named account1 that has the disableKeyBasedMetadataWriteAccess property enabled. You are developing an app named App1 that will be used by a user named DevUser1 to create containers in account1. DevUser1 has a non- privileged user account in the Azure Active Directory (Azure AD) tenant.
You need to ensure that DevUser1 can use App1 to create containers in account1. What should you do? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: Resource tokens
Resource tokens provide access to the application resources within a database. Resource tokens:
Provide access to speci c containers, partition keys, documents, attachments, stored procedures, triggers, and UDFs.
Box 2: Azure Resource Manager API
You can use Azure Resource Manager to help deploy and manage your Azure Cosmos DB accounts, databases, and containers.
Incorrect Answers:
The Microsoft Graph API is a RESTful web API that enables you to access Microsoft Cloud service resources.


Reference:

https://docs.microsoft.com/en-us/azure/cosmos-db/secure-access-to-data https://docs.microsoft.com/en-us/rest/api/resources/



HOTSPOT (Drag and Drop is not supported).
You have an Azure Cosmos DB Core (SQL) account that has a single write region in West Europe.
You run the following Azure CLI script.



For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: Yes
The Automatic failover option allows Azure Cosmos DB to failover to the region with the highest failover priority with no user action should a region become unavailable.

Box 2: No
West Europe is used for failover. Only North Europe is writable.
To Con gure multi-region set UseMultipleWriteLocations to true.

Box 3: Yes
Provisioned throughput with single write region costs $0.008/hour per 100 RU/s and provisioned throughput with multiple writable regions costs $0.016/per hour per 100 RU/s.


Reference:

https://docs.microsoft.com/en-us/azure/cosmos-db/sql/how-to-multi-master https://docs.microsoft.com/en-us/azure/cosmos-db/optimize- cost-regions



You are developing an application that will use an Azure Cosmos DB Core (SQL) API account as a data source. You need to create a report that displays the top ve most ordered fruits as shown in the following table.



A collection that contains aggregated data already exists. The following is a sample document:



Which two queries can you use to retrieve data for the report? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.





Answer(s): B,D

Explanation:

ARRAY_CONTAINS returns a Boolean indicating whether the array contains the speci ed value. You can check for a partial or full match of an object by using a boolean expression within the command.
Incorrect Answers:
A: Default sorting ordering is Ascending. Must use Descending order.
C: Order on Orders not on Type.


Reference:

https://docs.microsoft.com/en-us/azure/cosmos-db/sql/sql-query-array-contains



HOTSPOT (Drag and Drop is not supported).
You have a database in an Azure Cosmos DB Core (SQL) API account.
You plan to create a container that will store employee data for 5,000 small businesses. Each business will have up to 25 employees. Each employee item will have an emailAddress value.
You need to ensure that the emailAddress value for each employee within the same company is unique. To what should you set the partition key and the unique key? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: CompanyID
After you create a container with a unique key policy, the creation of a new or an update of an existing item resulting in a duplicate within a logical partition is prevented, as speci ed by the unique key constraint. The partition key combined with the unique key guarantees the uniqueness of an item within the scope of the container.
For example, consider an Azure Cosmos container with Email address as the unique key constraint and CompanyID as the partition key. When you con gure the user's email address with a unique key, each item has a unique email address within a given CompanyID. Two items can't be created with duplicate email addresses and with the same partition key value.

Box 2: emailAddress


Reference:

https://docs.microsoft.com/en-us/azure/cosmos-db/unique-keys



HOTSPOT (Drag and Drop is not supported).
You have a container named container1 in an Azure Cosmos DB Core (SQL) API account. The container1 container has 120 GB of data.
The following is a sample of a document in container1.



The orderId property is used as the partition key.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: Yes
Records with different OrderIDs will match.

Box 2: Yes
Records with different OrderIDs will match.

Box 3: No
Only records with one speci c OrderId will match



You are designing an Azure Cosmos DB Core (SQL) API solution to store data from IoT devices. Writes from the devices will be occur every second.
The following is a sample of the data.



You need to select a partition key that meets the following requirements for writes:
Minimizes the partition skew
Avoids capacity limits
Avoids hot partitions
What should you do?

  1. Use timestamp as the partition key.
  2. Create a new synthetic key that contains deviceId and sensor1Value.
  3. Create a new synthetic key that contains deviceId and deviceManufacturer.
  4. Create a new synthetic key that contains deviceId and a random number.

Answer(s): D

Explanation:

Use a partition key with a random su x. Distribute the workload more evenly is to append a random number at the end of the partition key value. When you distribute items in this way, you can perform parallel write operations across partitions.
Incorrect Answers:
A: You will also not like to partition the data on DateTime , because this will create a hot partition. Imagine you have partitioned the data on time, then for a given minute, all the calls will hit one partition. If you need to retrieve the data for a customer, then it will be a fan-out query because data may be distributed on all the partitions.
B: Senser1Value has only two values.
C: All the devices could have the same manufacturer.


Reference:

https://docs.microsoft.com/en-us/azure/cosmos-db/sql/synthetic-partition-keys
D (78%) C (22%)



You maintain a relational database for a book publisher. The database contains the following tables.



The most common query lists the books for a given authorId.
You need to develop a non-relational data model for Azure Cosmos DB Core (SQL) API that will replace the relational database. The solution must minimize latency and read operation costs.
What should you include in the solution?

  1. Create a container for Author and a container for Book. In each Author document, embed bookId for each book by the author. In each Book document embed authorId of each author.
  2. Create Author, Book, and Bookauthorlnk documents in the same container.
  3. Create a container that contains a document for each Author and a document for each Book. In each Book document, embed authorId.
  4. Create a container for Author and a container for Book. In each Author document and Book document embed the data from Bookauthorlnk.

Answer(s): A

Explanation:

Store multiple entity types in the same container.



You have an Azure Cosmos DB Core (SQL) API account.
You run the following query against a container in the account.



What is the output of the query?

  1. [{"A": false, "B": true, "C": false}]
  2. [{"A": true, "B": false, "C": true}]
  3. [{"A": true, "B": true, "C": false}]
  4. [{"A": true, "B": true, "C": true}]

Answer(s): A

Explanation:

IS_NUMBER returns a Boolean value indicating if the type of the speci ed expression is a number.
"1234" is a string, not a number.


Reference:

https://docs.microsoft.com/en-us/azure/cosmos-db/sql/sql-query-is-number



Viewing Page 1 of 13



Share your comments for Microsoft DP-420 exam with other users:

Limbo 10/9/2023 3:08:00 AM

this is way too informative
BOTSWANA


Tejasree 8/26/2023 1:46:00 AM

very helpfull
UNITED STATES


Yolostar Again 10/12/2023 3:02:00 PM

q.189 - answers are incorrect.
Anonymous


Shikha Bakra 9/10/2023 5:16:00 PM

awesome job in getting these questions
AUSTRALIA


Kevin 10/20/2023 2:01:00 AM

i cant find aws certified practitioner clf-c01 exam in aws website but i found aws certified practitioner clf-c02 exam. can everyone please verify the difference between the two clf-c01 and clf-c02? thank you
UNITED STATES


D Mario 6/19/2023 10:38:00 PM

grazie mille. i got a satisfactory mark in my exam test today because of this exam dumps. sorry for my english.
ITALY


Bharat Kumar Saraf 10/31/2023 4:36:00 AM

some of the answers are incorrect. need to be reviewed.
HONG KONG


JP 7/13/2023 12:21:00 PM

so far so good
Anonymous


Kiky V 8/8/2023 6:32:00 PM

i am really liking it
Anonymous


trying 7/28/2023 12:37:00 PM

thanks good stuff
UNITED STATES


exampei 10/4/2023 2:40:00 PM

need dump c_tadm_23
Anonymous


Eman Sawalha 6/10/2023 6:18:00 AM

next time i will write a full review
GREECE


johnpaul 11/15/2023 7:55:00 AM

first time using this site
ROMANIA


omiornil@gmail.com 7/25/2023 9:36:00 AM

please sent me oracle 1z0-1105-22 pdf
BANGLADESH


John 8/29/2023 8:59:00 PM

very helpful
Anonymous


Kvana 9/28/2023 12:08:00 PM

good info about oml
UNITED STATES


Checo Lee 7/3/2023 5:45:00 PM

very useful to practice
UNITED STATES


dixitdnoh@gmail.com 8/27/2023 2:58:00 PM

this website is very helpful.
UNITED STATES


Sanjay 8/14/2023 8:07:00 AM

good content
INDIA


Blessious Phiri 8/12/2023 2:19:00 PM

so challenging
Anonymous


PAYAL 10/17/2023 7:14:00 AM

17 should be d ,for morequery its scale out
Anonymous


Karthik 10/12/2023 10:51:00 AM

nice question
Anonymous


Godmode 5/7/2023 10:52:00 AM

yes.
NETHERLANDS


Bhuddhiman 7/30/2023 1:18:00 AM

good mateial
Anonymous


KJ 11/17/2023 3:50:00 PM

good practice exam
Anonymous


sowm 10/29/2023 2:44:00 PM

impressivre qustion
Anonymous


CW 7/6/2023 7:06:00 PM

questions seem helpful
Anonymous


luke 9/26/2023 10:52:00 AM

good content
Anonymous


zazza 6/16/2023 9:08:00 AM

question 21 answer is alerts
ITALY


Abwoch Peter 7/4/2023 3:08:00 AM

am preparing for exam
Anonymous


mohamed 9/12/2023 5:26:00 AM

good one thanks
EGYPT


Mfc 10/23/2023 3:35:00 PM

only got thru 5 questions, need more to evaluate
Anonymous


Whizzle 7/24/2023 6:19:00 AM

q26 should be b
Anonymous


sarra 1/17/2024 3:44:00 AM

the aaa triad in information security is authentication, accounting and authorisation so the answer should be d 1, 3 and 5.
UNITED KINGDOM