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数万人の顧客は私たちのDS0-001問題集を利用したら、DS0-001試験に合格しました。もちろん、私たちのDS0-001問題集を利用したら、唯一の収穫は試験に合格することではなく、自分の仕事またライフスタイルを変えることもできます。DS0-001問題集のメリットはなんですか？いろいろありますよ。例えば、覚えやすい、便利、時間を節約するということなどです。
質問 # 51
Which of the following is recommended in order to provide encrypted data communication pathways for information as it is transmitted over a network?
正解：B
解説：
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.
質問 # 52
(A business analyst queries the same few tables every quarter and does not want to write new SQL code every time. Which of the following would best support the business analyst's needs and allow the database administrator to optimize disk space?)
正解：C
解説：
The correct answer is B. View. CompTIA DataSys+ documentation explains that views are virtual tables created from stored SQL queries that present data from one or more underlying tables without physically storing the data themselves. This makes views an ideal solution when users repeatedly query the same datasets and want consistent results without rewriting SQL statements.
In this scenario, the business analyst runs the same queries every quarter. By using a view, the analyst can simply query the view as if it were a table, eliminating the need to re-create complex SQL joins, filters, or aggregations each time. From a usability standpoint, views simplify access to data and reduce the likelihood of query errors, which aligns with DataSys+ objectives related to usability and abstraction.
From the database administrator's perspective, views also help optimize disk space. Because views do not store data physically (unlike tables), they consume minimal storage while still providing a reusable query structure. This is especially important in environments where storage efficiency and performance tuning are key responsibilities of the DBA.
Option A, a table, would require duplicating data, increasing disk usage and maintenance overhead. Option C, a function, is typically used to return a calculated value and is not designed to represent reusable multi-row query results for reporting purposes. Option D, a stored procedure, can encapsulate logic and queries, but it is generally used for executing operations rather than providing a simple, queryable dataset for analysts. Stored procedures may also introduce additional complexity and are less intuitive for ad-hoc querying.
CompTIA DataSys+ emphasizes views as a best practice for abstraction, security, and efficiency. They support repeated reporting needs while preserving storage resources and simplifying database management.
Therefore, B. View is the most accurate and fully aligned answer.
Guage
質問 # 53
Which of the following best describes the policy/and or procedure that ensures records are kept in a database for a period of time and not deleted?
正解：A
質問 # 54
Which of the following indexes stores records in a tabular format?
正解：A
解説：
The index that stores records in a tabular format is columnstore. A columnstore index is a type of index that stores and compresses data by columns rather than by rows. A columnstore index can improve the performance and efficiency of queries that perform aggregations, calculations, or analysis on large amounts of data, such as data warehouse or business intelligence applications. A columnstore index can also reduce the storage space required for data by applying various compression techniques, such as dictionary encoding, run- length encoding, bit packing, etc. The other options are either different types of indexes or not related to indexes at all. For example, a non-clustered index is a type of index that stores the values of one or more columns in a sorted order along with pointers to the corresponding rows in the table; a unique index is a type of index that enforces uniqueness on one or more columns in a table; a secondary index is an alternative term for a non-clustered index. References: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.1 Given a scenario, perform common database maintenance tasks.
質問 # 55
An IT department needs to validate who signs in and has permissions to use the company's cloud resources. Which of the following can be used to accomplish this task?
正解：D
解説：
Identity and Access Management (IAM) systems authenticate users and authorize permissions, ensuring that only validated individuals can access cloud resources.
質問 # 56
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