Free CompTIA DS0-001 Practice Questions & Answers 2026 Part3 | CompTIA DataSys+

Which of the following describes the purpose of a snapshot?

Which of the following is the correct order of the steps in the database deployment process?

Which of the following is a result of an on-path attack on a system?

A database administrator would like to create a table named XYZ. Which of the following queriesshould the database administrator use to create the table?A)B)C)D)

A business analyst is using a client table and an invoice table to create a database view that showsclients who have not made purchases yet. Which of the following joins is most appropriate for theanalyst to use to create this database view?

Howard is a database designer for an e-commerce website working on creating a table to store customer information. He wants to ensure that each customer can be uniquely identified within the table. Which database concept should Jack use to accomplish this goal?

Which of the following database structures is a type of NoSQL database?

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 be best suited for this task?

A database administrator is migrating the information in a legacy table to a newer table. Both tablescontain 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 thetwo tables are not duplicated?

A DBA left the company, and the DBA's account was removed from the system. Soon after, scheduled jobs began failing. Which of the following would have most likely prevented this issue? The most likely way to prevent this issue is to use service accounts. Service accounts are special accounts that are used by applications or services to perform tasks or run jobs on behalf of users. Service accounts have limited permissions and access rights that are tailored to their specific functions. By using service accounts, the DBA can ensure that scheduled jobs can run independently of individual user accounts, and avoid failures due to account removal or changes. The other options are either not related or not effective for this issue. For example, load balancing is a technique that distributes the workload across multiple servers or resources to improve performance and availability; business continuity plan is a plan that outlines how an organization will continue its operations in the event of a disaster or disruption; assigning a data steward is a process that designates a person who is responsible for ensuring the quality and governance of data.Reference:CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.3 Given a scenario, migrate data between databases.

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?

What combination of backup strategies provides the fastest backup restoration time?

A database is configured to use undo management with temporary undo enabled.

A developer is designing a table that does not have repeated values. Which of the following indexes should the developer use to prevent duplicate values from being inserted?

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 server administrator wants to analyze a database server's disk throughput. Which of the following should the administrator measure?

A database administrator manages a database server that is running low on disk space. A lot ofbackup files are stored on the server's disks.Which of the following is the best action for the administrator to take?

Which of the following services is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network? The service that is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network is DHCP. DHCP, or Dynamic Host Configuration Protocol, is a service that automatically assigns IP addresses and other network configuration parameters, such as subnet mask, default gateway, DNS server, etc., to computers or devices on a network. DHCP helps simplify the administration and management of IP addresses on a network, as well as avoid conflicts or errors caused by manual or duplicate assignments. DHCP also allows computers or devices to release or renew their IP addresses when they join or leave the network. The other options are either different services or not related to IP addresses at all. For example, DNS, or Domain Name System, is a service that translates domain names into IP addresses and vice versa; LDAP, or Lightweight Directory Access Protocol, is a service that provides access to directory information such as users, groups, or devices on a network; ISMTP is not a valid acronym or service.Reference:CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.1 Given a scenario, select an appropriate database deployment method.

Which of the following would a database administrator monitor to gauge server health? (Choose two.)

Which of the following is the correct order of the steps in the database deployment process?

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? The approach that the administrator should use when conducting the stress test is to capture business logic, check the performance of codes, and report findings. This will help the administrator to evaluate how well the application handles high volumes of data and transactions, identify any bottlenecks or errors in the code, and provide feedback to the development team on how to improve the application's efficiency and reliability. The other options are either too narrow or too broad in scope, and do not address the specific needs of an application that uses the Entity Framework.Reference:CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.3 Given a scenario, monitor database performance and security.

A database administrator set up a connection for a SQL Server instance for a new user, but theadministrator is unable to connect using the user's workstation. Which of the following is the mostlikely cause of the issue?

Which of the following is the correct order of the steps in the database deployment process?

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 database administrator needs to ensure that a newly installed corporate business intelligence application can access the company’s transactional data. Which of the following tasks should the administrator perform first?

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 database's daily backup failed. Previous backups were completed successfully. Which of the following should the database administrator examinefirstto troubleshoot the issue?

A database administrator needs to ensure that a newly installed corporate business intelligence application can access the company’s transactional data. Which of the following tasks should the administrator perform first?

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 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 DBA is reviewing the following logs to determine the current data backup plan for a primary data server:Which of the following best describes this backup plan?

Several users received a message from the Chief Executive Officer asking them for their bank account details. Which of the following types of attacks is taking place?

Which of the following describes a scenario in which a database administrator would use a relational database rather than a non-relational database?

Which of the following scripts would set the database recovery model for sys.database?

Given the following customer table:Which of the following ORM snippets would return the ID, state, and country of all customers with the newest customers appearing first?

A DBA is reviewing the following logs to determine the current data backup plan for a primary data server:Which of the following best describes this backup plan?

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 company is launching a proof-of-concept, cloud-based application. One of the requirements is toselect a database engine that will allow administrators to perform quick and simple queries onunstructured data. Which of the following would be best suited for this task?

Which of the following can be used to protect physical database appliances from damage in a server room? (Choose two.)