Download CompTIA DataSys plus.DS0-001.ExamTopics.2025-10-03.20q.vcex

Vendor: CompTIA
Exam Code: DS0-001
Exam Name: CompTIA DataSys plus
Date: Oct 03, 2025
File Size: 12 KB
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Demo Questions

Question 1
A database administrator set up a connection for a SQL Server instance for a new user, but the administrator is unable to connect using the user's workstation. Which of the following is the most likely cause of the issue?
  1. The SQL Server codes are performing badly.
  2. The SQL Server has not been tested properly.
  3. The SQL Server ports to the main machine are closed.
  4. The SQL Server has many concurrent users.
Correct answer: C
Explanation:
C: 1 - Mosted
C: 1 - Mosted
Question 2
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?
  1. UNION
  2. JOIN
  3. INTERSECT
  4. CROSS JOIN
Correct answer: A
Explanation:
A: 2 - Mosted
A: 2 - Mosted
Question 3
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?
  1. DOU
  2. SLA
  3. MOU
  4. SOW
Correct answer: B
Explanation:
B: 1 - Mosted
B: 1 - Mosted
Question 4
A database is configured to use undo management with temporary undo enabled. An UPDATE is run on the table.
Which of the following describes where the undo is stored?
  1. In the system global area
  2. In the undo tablespace
  3. In the SYSAUX tablespace
  4. In the temporary tablespace
Correct answer: B
Explanation:
B: 4 - Mosted
B: 4 - Mosted
Question 5
Which of the following is the deployment phase in which a DBA ensures the most recent patches are applied to the new database?
  1. Importing
  2. Upgrading
  3. Provisioning
  4. Modifying
Correct answer: C
Explanation:
C: 2 - Mosted
C: 2 - Mosted
Question 6
Which of the following types of RAID, if configured with the same number and type of disks, would provide the best write performance?
  1. RAID 3
  2. RAID 5
  3. RAID 6
  4. RAID 10
Correct answer: D
Explanation:
D: 2 - Mosted
D: 2 - Mosted
Question 7
Which of the following is part of logical database infrastructure security?
  1. Surveillance
  2. Biometric access
  3. Perimeter network
  4. Cooling system
Correct answer: A
Explanation:
C: 1
C: 1
Question 8
A database administrator would like to extract a sales performance report from more than one database instance. Which of the following keywords should the database administrator use?
  1. UNION ON
  2. UNION AND
  3. JOIN ON
  4. WITH
Correct answer: C
Explanation:
A: 1
A: 1
Question 9
A business analyst is using a client table and an invoice table to create a database view that shows clients who have not made purchases yet. Which of the following joins is most appropriate for the analyst to use to create this database view?
  1. INNER JOIN ON Client.Key = Invoice.Key
  2. RIGHT JOIN ON Client.Key = Invoice.Key WHERE BY Client.Key IS NULL
  3. LEFT JOIN ON Client.Key = Invoice.Key
  4. LEFT JOIN ON Client.Key = Invoice.Key WHERE BY Invoice.Key IS NULL
Correct answer: D
Explanation:
D: 1 - Mosted
D: 1 - Mosted
Question 10
Which of the following firewall types allows an administrator to control traffic and make decisions based on factors such as connection information and data flow communications?
  1. Circuit-level
  2. Stateful
  3. Proxy
  4. Packet
Correct answer: B
Explanation:
B: 1 - Mosted
B: 1 - Mosted
Question 11
Which of the following statements contains an error?
  1. Select EmpId from employee where EmpId=90030
  2. Select EmpId where EmpId=90030 and DeptId=34
  3. Select* from employee where EmpId=90030
  4. Select EmpId from employee
Correct answer: B
Explanation:
B: 1 - Mosted
B: 1 - Mosted
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