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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA DataSys+ Certification Exam |
| Exam Number: | DS0-001 |
| Exam Format: | Multiple-choice, Performance-based |
| Certificate Validity Period: | 3 years |
| Exam Price: | $246 USD |
| Related Certifications: | CompTIA Security+ CompTIA Data+ |
| Real Exam Qty: | Up to 90 |
| Exam Duration: | 90 minutes |
| Available Languages: | English, Japanese |
| Passing Score: | 700 (scale 100โ900) |
| Recommended Training: | CompTIA DataSys+ Learning Path CompTIA Official Study Guide |
| Exam Registration: | Pearson VUE Testing Center CompTIA Official Registration |
| Sample Questions: | CompTIA DS0-001 Sample Questions |
| Exam Way: | Online proctored or in-person at authorized test centers |
| Pre Condition: | No mandatory prerequisites; recommended 2โ3 years of experience in database administration or related roles |
| Official Syllabus URL: | https://www.comptia.org/en/certifications/datasys/ |
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NEW QUESTION # 66
A database administrator needs to ensure database backups are occurring on a daily basis and at scheduled times. Which of the following actions should the administrator take?
Answer: A
Explanation:
The action that the administrator should take is to review the server logs for entries. Server logs are files that record the events and activities that occur on a server, such as database backups, errors, warnings, or failures. By reviewing the server logs, the administrator can verify that the database backups are occurring on a daily basis and at scheduled times, and also identify any issues or anomalies that may affect the backup process or the backup quality. The other options are either not relevant or not sufficient for this task. For example, querying the database to observe entries may not show the backup status or frequency, checking the database schema may not reflect the backup schedule or policy, and reviewing the backup media may not indicate the backup time or duration.
NEW QUESTION # 67
A group of developers needs access to a database in a development environment, but the database contains sensitive data. Which of the following should the database administrator do before giving the developers access to the environment?
Answer: C
Explanation:
The database administrator should mask the sensitive data before giving the developers access to the environment. Data masking is a technique that replaces sensitive data with fictitious but realistic data, such as random numbers or characters, to protect it from unauthorized access or exposure. Data masking preserves the format and structure of the original data, but does not reveal its actual value. This allows developers to work with realistic data without compromising its confidentiality or compliance. The other options are either insufficient or excessive for this scenario. For example, auditing access to tables with sensitive data may help monitor and track who accesses the data, but does not prevent it from being seen; removing sensitive data from tables may compromise the quality or completeness of the data, and may not be feasible if there is a large amount of data; encrypting connections to the development environment may protect the data in transit, but not at rest or in use. 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 # 68
A database administrator is concerned about transactions in case the system fails. Which of the following properties addresses this concern?
Answer: B
Explanation:
The property that addresses this concern is durability. Durability is one of the four properties (ACID) that ensure reliable transactions in a database system. Durability means that once a transaction has been committed, its effects are permanent and will not be lost in case of system failure, power outage, crash, etc.
Durability can be achieved by using techniques such as write-ahead logging, checkpoints, backup and recovery, etc. The other options are either not related or not specific to this concern. For example, isolation means that concurrent transactions do not interfere with each other and produce consistent results; atomicity means that a transaction is either executed as a whole or not at all; consistency means that a transaction preserves the validity and integrity of the data. References: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.3 Given a scenario, identify common database issues.
NEW QUESTION # 69
(Which of the following would a database administrator monitor to gauge server health? Select two.)
Answer: D,E
Explanation:
The correct answers are A. CPU usage and B. Memory usage. According to CompTIA DataSys+ objectives, monitoring server health is a foundational responsibility of a database administrator (DBA), and it primarily focuses on core system resources that directly impact database performance, stability, and availability. CPU and memory are the two most critical indicators of overall server health in database environments.
CPU usage reflects how much processing power is being consumed by database queries, background jobs, indexing operations, and concurrent user activity. High or sustained CPU utilization can indicate inefficient queries, missing indexes, blocking processes, or workload spikes. DataSys+ emphasizes CPU monitoring as essential for identifying performance bottlenecks and ensuring the database server can handle current and future workloads.
Memory usage is equally important because databases rely heavily on memory for caching data, query execution plans, and buffering disk I/O. Insufficient available memory can cause excessive disk reads, slower query performance, and system thrashing. DataSys+ materials highlight memory monitoring as a key metric for tuning database configurations and maintaining consistent performance.
Option C, transaction logs, are important for recovery, auditing, and troubleshooting but do not directly indicate overall server health; they reflect database activity rather than system resource status. Option D, network sniffers, are security and diagnostics tools used by network administrators, not standard DBA health metrics. Option E, domain controllers, relate to authentication infrastructure and fall outside the scope of database server health monitoring. Option F, firewall traffic, is relevant to network security monitoring, not internal server performance.
CompTIA DataSys+ clearly differentiates system health metrics (CPU, memory, disk I/O) from security and infrastructure components. For gauging server health effectively, CPU and memory usage provide the most direct, actionable insight. Therefore, A and B are the verified and correct answers.
NEW QUESTION # 70
Which of the following have data manipulation and procedural scripting power? (Choose two.)
Answer: C,E
Explanation:
The two options that have data manipulation and procedural scripting power are PL/SQL and T- SQL. PL/SQL, or Procedural Language/Structured Query Language, is an extension of SQL that adds procedural features to SQL for Oracle databases. PL/SQL allows users to create and execute stored procedures, functions, triggers, packages, etc., using variables, loops, conditions, exceptions, etc., in addition to SQL commands. PL/SQL helps improve the performance, functionality, modularity, and security of SQL queries and applications. T-SQL, or Transact-SQL, is an extension of SQL that adds procedural features to SQL for Microsoft SQL Server databases.
T-SQL allows users to create and execute stored procedures, functions, triggers, etc., using variables, loops, conditions, exceptions, etc., in addition to SQL commands. T-SQL helps improve the performance, functionality, modularity, and security of SQL queries and applications. The other options are either not related or not having both data manipulation and procedural scripting power. For example, PQL, or Power Query Language, is a data analysis and transformation language for Microsoft Power BI and Excel; Advanced SQL is a term that refers to the advanced features or techniques of SQL, such as subqueries, joins, aggregations, etc.; SQL, or Structured Query Language, is a standard language for manipulating and querying data in relational databases, but it does not have procedural features.
NEW QUESTION # 71
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