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NEW QUESTION # 17
(A database administrator realizes that certain data was not captured correctly when it was imported. Which of the following commands should the administrator use to fix the issue?)
Answer: B
Explanation:
The correct answer is A. UPDATE. CompTIA DataSys+ classifies the UPDATE command as a Data Manipulation Language (DML) statement used to modify existing data within a table. When data is imported incorrectly-such as having wrong values, missing fields, or improperly formatted entries-the appropriate corrective action is to update the affected records rather than removing data structures or deleting records outright.
The UPDATE command allows a database administrator to correct specific columns or rows by setting them to the proper values while preserving the rest of the dataset. This aligns with DataSys+ best practices, which emphasize data integrity, minimal disruption, and precision when fixing data-related issues. By using a WHERE clause, the administrator can target only the incorrect records, reducing risk and avoiding unnecessary data loss.
Option B, DROP TABLE, is a DDL command that completely removes a table and all its data and structure.
This is an extreme action and would not be appropriate when only certain data values are incorrect. Option C, DELETE, removes rows from a table, which may result in loss of valid data rather than correcting it. Deletion is only appropriate when data should no longer exist, not when it needs correction. Option D, ALTER TABLE, is also a DDL command used to modify table structure (such as adding or changing columns), not to fix incorrect row-level data.
CompTIA DataSys+ stresses the importance of choosing the least destructive and most targeted command when resolving data issues. Correcting imported data typically involves adjusting values rather than altering schema or removing data entirely.
Therefore, to fix incorrectly captured imported data while maintaining database integrity and availability, the administrator should use the UPDATE command, making option A the correct and fully verified answer.
NEW QUESTION # 18
Which of the following is recommended in order to provide encrypted data communication pathways for information as it is transmitted over a network?
Answer: A
Explanation:
The option that is recommended in order to provide encrypted data communication pathways for information as it is transmitted over a network is TLS. TLS, or Transport Layer Security, is a protocol that provides secure communication over the internet by encrypting the data using cryptographic algorithms and keys. TLS also provides authentication and integrity by verifying the identity of the parties involved and ensuring that the data has not been altered or tampered with. TLS can be used to protect various types of data, such as web traffic, email, instant messaging, voice over IP, etc. The other options are either not related or not sufficient for this purpose. For example, TCP/IP, or Transmission Control Protocol/Internet Protocol, is a set of protocols that defines how data is transmitted and routed over the internet, but does not provide encryption or security; NFS, or Network File System, is a protocol that allows users to access and share files over a network, but does not provide encryption or security; SMB, or Server Message Block, is a protocol that allows users to access and share files, printers, and other resources over a network, but does not provide encryption or security. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.2 Given a scenario, implement security controls for databases.
NEW QUESTION # 19
Which of the following best describes the category of SQL commands required to revoke access to database objects?
Answer: B
Explanation:
The category of SQL commands that is required to revoke access to database objects is DCL.
DCL, or Data Control Language, is a subset of SQL commands that are used to control or manage the access or permissions of users or roles on a database. DCL includes commands such as GRANT and REVOKE.
GRANT is a DCL command that is used to grant privileges or roles to users or roles on specific objects in a database, such as tables, views, procedures, etc. REVOKE is a DCL command that is used to revoke privileges or roles from users or roles on specific objects in a database. For example, the following statement uses the REVOKE command to revoke the SELECT privilege from user Alice on table employee:
REVOKE SELECT ON employee FROM Alice
NEW QUESTION # 20
A programmer wants to configure a database to only allow read or write access when requests are coming from specific IP addresses. Which of the following can be used to configure IP addresses to allow access to the database?
Answer: B
Explanation:
The best option to configure IP addresses to allow access to the database is a firewall. A firewall is a network device or software that controls the incoming and outgoing traffic based on a set of rules or policies. A firewall can be used to filter the traffic by IP addresses, ports, protocols, or other criteria, and allow or deny access to the database accordingly. The other options are either not relevant or not sufficient for this task. For example, a static IP address is an IP address that does not change over time, but it does not determine the access to the database; a dynamic IP address is an IP address that changes periodically, but it does not control the traffic to the database; an IDNS is an Internet Domain Name System, which translates domain names into IP addresses, but it does not regulate the access to the database.
NEW QUESTION # 21
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?
Answer: D
Explanation:
The document that meets these requirements is an SLA. An SLA, or Service Level Agreement, is a contract between a service provider and a customer that defines the scope, quality, and terms of the service delivery. An SLA typically includes the responsibilities, metrics, penalties, and other generalities that a provider would have to fulfill for customers to use its platforms. An SLA also establishes the expectations and obligations of both parties, as well as the methods for measuring and monitoring the service performance. The other options are either different types of documents or not related to service delivery. For example, a DOU, or Data Use Agreement, is a document that governs the sharing and use of data between parties; an MOU, or Memorandum of Understanding, is a document that expresses a mutual agreement or intention between parties; a SOW, or Statement of Work, is a document that describes the specific tasks and deliverables of a project or contract. Reference: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.4 Given a scenario, implement service level agreements.
NEW QUESTION # 22
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