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Free CompTIA DS0-001 Practice Questions & Answers 2026 Part1 | CompTIA DataSys+

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Question #1
A company's backup plan includes only running full backups for its small database. Which of the following frequencies would be most appropriate in this situation?
A. Daily
B. Monthly
C. Weekly
D. Quarterly
View answer
Correct Answer: A
Question #2
Over the weekend, a company’s transaction database was moved to an upgraded server. All validations performed after the migration indicated that the database was functioning as expected. However, on Monday morning, multiple users reported that the corporate reporting application was not working.Which of the following are the most likely causes? (Choose two.)
A. The access permissions for the service account used by the reporting application were not changed
B. The new database server has its own reporting system, so the old one is not needed
C. The reporting jobs that could not process during the database migration have locked the application
D. The reporting application’s mapping to the database location was not updated
E. The database server is not permitted to fulfill requests from a reporting application
F. The reporting application cannot keep up with the new, faster response from the database
View answer
Correct Answer: AD
Question #3
Which of the following is the correct order of the steps in the database deployment process?
A. 1
B. 1
C. 1
D. 1
View answer
Correct Answer: C
Question #4
A database administrator manages a database server that is running low on disk space. A lot of backup files are stored on the server's disks.Which of the following is the best action for the administrator to take?
A. elete all the backup files except for the most recent one
B. elete all the backup files containing data that is rated as classified
C. ove all the backup files to external disks
D. elete all the backup files that are not required by the backup retention policy
View answer
Correct Answer: D
Question #5
A database administrator needs to provide access to data from two different tables to multiple group users in order to facilitate ongoing reporting. However, some columns in each table are restricted, and users should not be able to see the values in these columns.Which of the following is the best action for the administrator to take?
A. Create a stored procedure
B. Create a view
C. Create a csv export
D. Create a trigger
View answer
Correct Answer: B
Question #6
A database administrator is concerned about transactions in case the system fails. Which of the following properties addresses this concern?
A. Durability
B. Isolation
C. Atomicity
D. Consistency
View answer
Correct Answer: A
Question #7
Which of the following scripts would set the database recovery model for sys.database?
A.
B.
C.
D.
View answer
Correct Answer: A
Question #8
A database administrator is creating a table, which will contain customer data, for an online business. Which of the following SQL syntaxes should the administrator use to create an object?
A.
B.
C.
D.
View answer
Correct Answer: D
Question #9
A database administrator needs to aggregate data from multiple tables in a way that does not impactthe original tables, and then provide this information to a department. Which of the following is thebest way for the administrator to accomplish this task?
A. reate a materialized view
B. reate indexes on those tables
C. reate a new database
D. reate a function
View answer
Correct Answer: A
Question #10
A database administrator wants to remove inactive customers from a database. Which of the following statements should the administrator use?
A.
B.
C.
D.
View answer
Correct Answer: D
Question #11
A database administrator is conducting a stress test and providing feedback to a team that is developing an application that uses the Entity Framework. Which of the following explains the approach the administrator should use when conducting the stress test?
A. Capture business logic, check the performance of codes, and report findings
B. Check the clustered and non-clustered indexes, and report findings
C. Review application tables and columns, and report findings
D. Write queries directly into the database and report findings
View answer
Correct Answer: A
Question #12
Which of the following is a reason to create a stored procedure?
A. To minimize storage space
B. To improve performance
C. To bypass case sensitivity requirements
D. To give control of the query logic to the user
View answer
Correct Answer: B
Question #13
A company is launching a proof-of-concept, cloud-based application. One of the requirements is to select a database engine that will allow administrators to perform quick and simple queries on unstructured data.Which of the following would bebestsuited for this task?
A. MonogoDB
B. MS SQL
C. Oracle
D. Graph database
View answer
Correct Answer: A
Question #14
Which of the following commands is part of DDL?
A. RANT
B. REATE
C. PDATE
D. NSERT
View answer
Correct Answer: B
Question #15
A group of developers needs access to a database in a development environment, but the databasecontains sensitive data. Which of the following should the database administrator do before giving the developers accessto the environment?
A. udit access to tables with sensitive data
B. emove sensitive data from tables
C. ask the sensitive data
D. ncrypt connections to the development environment
View answer
Correct Answer: C
Question #16
Which of the followingbestdescribes a collection of data that shares the same properties or attributes?
A. Relation set
B. ER model
C. Entity set
D. Tuples
View answer
Correct Answer: C
Question #17
A company wants to deploy a new application that will distribute the workload to five different database instances. The database administrator needs to ensure that, for each copy of the database, users are able to read and write data that will be synchronized across all of the instances.Which of the following should the administrator use to achieve this objective?
A. Peer-to-peer replication
B. Failover clustering
C. Log shipping
D. Availability groups
View answer
Correct Answer: A
Question #18
A company wants to deploy a new application that will distribute the workload to five different database instances. The database administrator needs to ensure that, for each copy of the database, users are able to read and write data that will be synchronized across all of the instances.Which of the following should the administrator use to achieve this objective?
A. [Peer-to-peer replication
B. Failover clustering
C. Log shipping
D. Availability groups
View answer
Correct Answer: A
Question #19
A database administrator is migrating the information in a legacy table to a newer table. Both tables contain the same columns, and some of the data may overlap.Which of the following SQL commands should the administrator use to ensure that records from the two tables are not duplicated?
A. UNION
B. JOIN
C. IINTERSECT
D. CROSS JOIN
View answer
Correct Answer: A
Question #20
Over the weekend, a company's transaction database was moved to an upgraded server. All validations performed after the migration indicated that the database was functioning as expected. However, on Monday morning, multiple users reported that the corporate reporting application was not working.Which of the following are the most likely causes? (Choose two.)
A. The access permissions for the service account used by the reporting application were not changed
B. The new database server has its own reporting system, so the old one is not needed
C. The reporting jobs that could not process during the database migration have locked the application
D. The reporting application's mapping to the database location was not updated
E. The database server is not permitted to fulfill requests from a reporting application
F. The reporting application cannot keep up with the new, faster response from the database
View answer
Correct Answer: AD
Question #21
Which of the following services is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network?
A. DNS
B. DHCP
C. LDAP
D. ISMTP
View answer
Correct Answer: B
Question #22
A database administrator needs to provide access to data from two different tables to multiple groupusers in order to facilitate ongoing reporting. However, some columns in each table are restricted,and users should not be able to see the values in these columns.Which of the following is the best action for the administrator to take?
A. reate a stored procedure
B. reate a view
C. reate a csv export
D. reate a trigger
View answer
Correct Answer: B
Question #23
A company wants to deploy a new application that will distribute the workload to five different database instances. The database administrator needs to ensure that, for each copy of the database, users are able to read and write data that will be synchronized across all of the instances.Which of the following should the administrator use to achieve this objective?
A. [Peer-to-peer replication
B. Failover clustering
C. Log shipping
D. Availability groups
View answer
Correct Answer: A
Question #24
A database administrator is concerned about transactions in case the system fails. Which of the following properties addresses this concern?
A. Durability
B. Isolation
C. Atomicity
D. Consistency
View answer
Correct Answer: A
Question #25
A database administrator needs to ensure that a newly installed corporate business intelligence application can access the company's transactional dat
A. Which of the following tasks should the administrator perform first?
B. Create a new service account exclusively for the business intelligence application
C. Build a separate data warehouse customized to the business intelligence application's specifications
D. Set up a nightly FTP data transfer from the database server to the business intelligence application server
E. Send the business intelligence administrator the approved TNS names file to configure the data mapping
F. Open a new port on the database server exclusively for the business intelligence application
View answer
Correct Answer: A
Question #26
Which of the following is used to hide data in a database so the data can only be read by a user who has a key?
A. Data security
B. Data masking
C. Data protection
D. Data encryption
View answer
Correct Answer: D
Question #27
A company needs to prepare a document that establishes the responsibilities, metrics, penalties, and other generalities that a provider would have to fulfill for customers to use its platforms.Which of the following documents meets these requirements?
A. DOU
B. SLA
C. MOU
D. SOW
E. Reveal Answer
View answer
Correct Answer: B
Question #28
A database administrator is conducting a stress test and providing feedback to a team that is developing an application that uses the Entity Framework.Which of the following explains the approach the administrator should use when conducting the stress test?
A. Capture business logic, check the performance of codes, and report findings
B. Check the clustered and non-clustered indexes, and report findings
C. Review application tables and columns, and report findings
D. Write queries directly into the database and report findings
View answer
Correct Answer: A
Question #29
A database administrator needs a tool to document and explain the relationships between data in an organization's database. Which of the following is the best tool to accomplish this task?
A. Text editor
B. UML editor
C. Word processor
D. SQL query
E. Reveal Answer
View answer
Correct Answer: B
Question #30
Which of the following should a company develop to ensure preparedness for a fire in a data center?
A. Deployment plan
B. Backup plan
C. Data retention policy
D. Disaster recovery plan
View answer
Correct Answer: D

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