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PassTest提供した商品の品質はとても良くて、しかも更新のスピードももっともはやくて、もし君はCompTIAのDS0-001の認証試験に関する学習資料をしっかり勉強して、成功することも簡単になります。
質問 # 31
(A financial institution is running a database that contains PII. Database administrators need to provide table access to junior developers. Which of the following is the best option?)
正解：A
解説：
The correct answer is C. View creation. CompTIA DataSys+ places strong emphasis on protecting personally identifiable information (PII) while still enabling developers and analysts to perform their required tasks. In environments such as financial institutions, direct access to tables containing sensitive data presents a significant security and compliance risk, especially for junior developers who do not require full visibility of production data.
Creating views is a best-practice solution that allows database administrators to expose only the necessary columns and rows while hiding or excluding sensitive fields such as Social Security numbers, account numbers, or personal contact details. Views act as a controlled abstraction layer over the underlying tables, enabling developers to work with realistic data structures without direct access to raw PII. DataSys+ highlights views as an effective method for enforcing the principle of least privilege while maintaining usability and performance.
Option A, role assignment, is important for access control but is too broad on its own. Assigning a role may still allow access to sensitive columns unless combined with views or column-level permissions. Option B, data masking, is often used for non-production environments or dynamic data protection, but it may not be the best solution when developers need structured access to table data for development or testing purposes.
Option D, policy enforcement, refers to governance and administrative controls but does not directly provide a technical mechanism for safe table access.
CompTIA DataSys+ stresses that database security should balance protection with operational efficiency.
Views allow DBAs to centrally manage what data is exposed, simplify auditing, and reduce the risk of accidental data leakage. They are especially valuable in regulated industries where compliance and data minimization are critical.
Therefore, the best option for providing junior developers with access while protecting PII is view creation, making option C the correct and fully verified answer.
質問 # 32
A database administrator needs to ensure data that is being migrated from a company's system to a third-party vendor is secure. Which of the following is the best security measure for the administrator to implement?
正解：D
解説：
Server-side encryption protects data during migration by encrypting it, ensuring confidentiality and security when transferring to a third-party vendor.
質問 # 33
(Which of the following best describes the function of PowerShell in a database environment?)
正解：D
解説：
The correct answer is D. It allows connections to databases through scripts. CompTIA DataSys+ documentation describes PowerShell as a powerful automation and scripting language primarily used in Windows-based environments to manage systems, applications, and databases. In a database context, PowerShell enables administrators to automate repetitive tasks, execute administrative commands, and interact with databases programmatically through scripted workflows.
PowerShell is commonly used by database administrators to perform tasks such as running scheduled queries, managing database services, monitoring performance metrics, automating backups and restores, and handling user or permission management. Its strength lies in scripting and orchestration rather than providing a specific database connectivity protocol. Through scripts, PowerShell can leverage database providers, command-line utilities, or modules to connect to and manage database systems efficiently.
Option A is incorrect because Python database connectivity is handled through Python libraries and drivers, not PowerShell. Option B is also incorrect because PowerShell is not designed to enable Linux systems to connect to databases; while PowerShell Core is cross-platform, its function is still automation and scripting, not system-level database connectivity. Option C is misleading because ODBC is a database connectivity standard that can be used by many tools and languages, but PowerShell itself is not defined by its use of ODBC. While PowerShell scripts can invoke ODBC connections, that is not its primary or defining function.
CompTIA DataSys+ emphasizes the role of automation tools in database operations. PowerShell fits squarely into this category by enabling DBAs to create repeatable, auditable, and scalable scripts that interact with databases and supporting infrastructure. Its use improves operational efficiency, reduces manual errors, and supports consistent database administration practices.
Therefore, the best and most accurate description of PowerShell's function in a database environment is allowing connections and management operations through scripts, making D the correct answer.
質問 # 34
Which of the following best describes the category of SQL commands required to revoke access to database objects?
正解：D
解説：
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;
The other options are either different categories of SQL commands or not related to SQL commands at all.
For example, IDDL is not a valid acronym or category of SQL commands; IDML is not a valid acronym or category of SQL commands; TCL, or Transaction Control Language, is a subset of SQL commands that are used to control or manage transactions on a database, such as committing or rolling back changes. References:
CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.2 Given a scenario, implement security controls for databases.
質問 # 35
Gary is logging into a system and is providing his fingerprint to gain access. What step of the IAM process is he performing?
正解：D
質問 # 36
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