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CompTIA Updated DS0-001 Exam Questions and Answers by maksymilian

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CompTIA DS0-001 Exam Overview :

Exam Name: CompTIA DataSys+ Certification Exam
Exam Code: DS0-001 Dumps
Vendor: CompTIA Certification: CompTIA Data+
Questions: 80 Q&A's Shared By: maksymilian
Question 20

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 thebestaction for the administrator to take?

Options:

A.

Move all the backup files to external disks.

B.

Delete all the backup files containing data that is rated as classified.

C.

Delete all the backup files that are not required by the backup retention policy.

D.

Delete all the backup files except for the most recent one.

Discussion
Question 21

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?

Options:

A.

Unique

B.

Single column

C.

Implicit

D.

Composite

Discussion
Question 22

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 ismostappropriate for the analyst to use to create this database view?

Options:

A.

INNER JOIN ON Client.Key = Invoice.Key

B.

RIGHT JOIN ON Client.Key = Invoice.Key WHERE BY Client.Key ISNOLL

C.

LEFT JOIN ON Client.Key = Invoice.Key

D.

LEFT JOIN ON Client.Key = Invoice.Key WHEREBY Invoice.Key ISNOLL

Discussion
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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?

Options:

A.

[Peer-to-peer replication

B.

Failover clustering

C.

Log shipping

D.

Availability groups

Discussion
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