DS0-001試験勉強書、DS0-001日本語版復習指南

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CompTIA DS0-001 認定試験の出題範囲：

トピック出題範囲
トピック 1
  • Data and Database Security: This topic focuses on data security concepts, governance and regulatory compliance purposes, implementing authentication and authorization policies and best practices. Additionally, the topic discusses database infrastructure security, and understanding types of attacks and their effects on data systems.
トピック 2
  • Database Fundamentals: This topic covers database structure types, SQL code development and modification based on scenarios, comparison of scripting methods and environments, and the impact of programming on database operations.
トピック 3
  • Business Continuity: Finally, this topic covers the importance of disaster recovery techniques. Moreover, the topic explains backup and restore best practices and processes.
トピック 4
  • Database Deployment: In this topic, you'll find discussions on database planning and design aspects. It also focuses on the implementation, testing, and deployment phases of databases.
トピック 5
  • Database Management and Maintenance: Here, you'll learn about monitoring and reporting for database management and performance, common database maintenance processes, documentation production, and relevant tools usage. Lastly, the topic focuses on implementing data management tasks.

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CompTIA DataSys+ Certification Exam 認定 DS0-001 試験問題 (Q21-Q26):

質問 # 21
Which of the following concepts applies to situations that require court files to be scanned for permanent reference and original documents be stored for ten years before they can be discarded?

正解：B

解説：
The concept that applies to situations that require court files to be scanned for permanent reference and original documents be stored for ten years before they can be discarded is data retention policies. Data retention policies are rules or guidelines that specify how long data should be kept and when it should be deleted or archived. Data retention policies are often based on legal, regulatory, or business requirements, and help organizations manage their data lifecycle, storage, and compliance. The other options are either not related or not specific to this situation. For example, data loss prevention is a process that aims to prevent data from being leaked, stolen, or corrupted; data classification is a process that assigns labels or categories to data based on its sensitivity, value, or risk; global regulations are laws or standards that apply to data across different countries or regions. Reference: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.1 Given a scenario, apply security principles and best practices for databases.


質問 # 22
(Which of the following are logical infrastructure security measures? Select two.)

正解：B、D

解説：
The correct answers are A. Firewall and B. Strong passwords. CompTIA DataSys+ differentiates security controls into logical (technical) and physical infrastructure security measures. Logical security measures are implemented through software, configuration, and system controls to protect data, systems, and network resources from unauthorized access or misuse.
A firewall is a core logical infrastructure security control. It enforces security rules that regulate incoming and outgoing network traffic based on predefined policies. In database environments, firewalls are used to restrict access to database servers, limit exposed ports, and allow connections only from trusted IP addresses or networks. DataSys+ emphasizes firewalls as a first line of defense in protecting databases from unauthorized access and network-based attacks.
Strong passwords are another essential logical security measure. They are part of authentication controls that ensure only authorized users can access systems and databases. Strong password requirements-such as minimum length, complexity, expiration, and reuse restrictions-help mitigate attacks like brute-force attempts, credential stuffing, and unauthorized privilege escalation. DataSys+ highlights strong authentication controls as foundational to protecting database environments.
Option D, port security, can be ambiguous, but in CompTIA context it is often associated with network switch configurations and is more infrastructure-specific; however, the exam most clearly classifies firewall and authentication mechanisms as logical controls. Options C, E, and F-key cards, camera systems, and time locks-are all physical security controls. These protect the physical facility or hardware but do not directly enforce access through software or system logic.
CompTIA DataSys+ stresses a layered security approach, where logical controls protect data and systems, while physical controls protect facilities. In this question, the focus is explicitly on logical infrastructure security, making Firewall and Strong passwords the most accurate and clearly aligned answers.
Therefore, the correct selections are A and B.


質問 # 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?

正解：C

解説：
The administrator should use peer-to-peer replication to achieve this objective. Peer-to-peer replication is a type of replication that allows data to be distributed across multiple database instances that are equal partners, or peers. Each peer can read and write data that will be synchronized across all peers. This provides high availability, scalability, and load balancing for the application. The other options are either not suitable for this scenario or do not support bidirectional data synchronization. For example, failover clustering provides high availability but does not distribute the workload across multiple instances; log shipping provides disaster recovery but does not allow writing data to secondary instances; availability groups provide high availability and read-only access to secondary replicas but do not support peer-to-peer replication. References: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5.3 Given a scenario, implement replication of database management systems.


質問 # 24
A database administrator is creating a table, which will contain customer data, for an online business. Which of the following SQL syntaxes should the administrator use to create an object?

正解：C

解説：
The SQL syntax that the administrator should use to create an object is option B. This syntax uses the CREATE TABLE statement to define a new table named customer with four columns: customer_id, name, email, and phone. Each column has a data type and a constraint, such as NOT NULL or PRIMARY KEY. The other options either have syntax errors, use incorrect keywords, or do not specify the table name or columns correctly. References: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.1 Given a scenario, identify and apply database structure types.


質問 # 25
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?

正解：C

解説：
The administrator should use peer-to-peer replication to achieve this objective. Peer-to-peer replication is a type of replication that allows data to be distributed across multiple database instances that are equal partners, or peers. Each peer can read and write data that will be synchronized across all peers. This provides high availability, scalability, and load balancing for the application. The other options are either not suitable for this scenario or do not support bidirectional data synchronization. For example, failover clustering provides high availability but does not distribute the workload across multiple instances; log shipping provides disaster recovery but does not allow writing data to secondary instances; availability groups provide high availability and read-only access to secondary replicas but do not support peer-to-peer replication. Reference: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5.3 Given a scenario, implement replication of database management systems.


質問 # 26
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