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NEW QUESTION # 90
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: B
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. References: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5.2 Given a scenario, implement backup and restoration of database management systems.
NEW QUESTION # 91
Which of the following are ORM tools? (Choose two.)
Answer: A,E
NEW QUESTION # 92
Which of the following statements contains an error?
Answer: B
Explanation:
The statement that contains an error is option B. This statement is missing the FROM clause, which specifies the table or tables from which to retrieve data. The FROM clause is a mandatory clause in a SELECT statement, unless the statement uses a subquery or a set operator. The correct syntax for option B would be:
SELECT EmpId FROM employee WHERE EmpId=90030 AND DeptId=34
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The other options are either correct or valid SQL statements. For example, option A selects the employee ID from the employee table where the employee ID is equal to 90030; option C selects all columns from the employee table where the employee ID is equal to 90030; option D selects the employee ID from the employee table without any filter condition. References: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.2 Given a scenario, execute database tasks using scripting and programming languages.
NEW QUESTION # 93
(Five minutes after a power failure occurred in a data center, a CO# system was automatically triggered.
Which of the following caused the CO# system to start?)
Answer: B
Explanation:
The correct answer is A. High temperatures activated the fire suppression system. According to CompTIA DataSys+ objectives, physical infrastructure protections are a critical component of database and data center reliability. CO# fire suppression systems are specifically designed to respond to fire-related conditions, not recovery metrics or cooling system logic. These systems are typically triggered by smoke detectors, heat sensors, or rapid temperature increases that indicate a fire or imminent fire risk following an event such as a power failure.
When a power outage occurs, backup systems such as generators and uninterruptible power supplies may activate. If these systems malfunction or generate excessive heat, temperature thresholds can be exceeded within minutes. DataSys+ materials emphasize that automated environmental controls are designed to protect equipment and data by suppressing fires quickly, often before flames are visible. CO# systems work by displacing oxygen, thereby extinguishing fire without damaging sensitive electronic equipment with water or chemical residue.
Options B and D are incorrect because RPO (Recovery Point Objective) and RTO (Recovery Time Objective) are disaster recovery planning metrics. RPO defines acceptable data loss measured in time, while RTO defines acceptable downtime. Neither setting directly triggers physical fire suppression systems. They are planning and policy metrics, not automated environmental controls.
Option C is also incorrect because cooling systems do not activate CO# fire suppression. Cooling failures may indirectly contribute to rising temperatures, but the CO# system itself is triggered by fire detection mechanisms, not by cooling system logic.
CompTIA DataSys+ clearly distinguishes between environmental controls (fire suppression, HVAC, power) and disaster recovery metrics (RPO, RTO). Therefore, option A best aligns with documented data center operational behavior and exam objectives.
NEW QUESTION # 94
A database analyst notices a query statement is running slowly. Which of the following should the analyst review first?
Answer: C
Explanation:
Missing indexes are a common cause of slow queries, as indexes improve data retrieval speed by allowing efficient searching within tables.
NEW QUESTION # 95
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