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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data and Database Security | 23% | - Security controls
|
| Topic 2: Database Deployment | 16% | - Implementation and testing
|
| Topic 3: Database Management and Maintenance | 25% | - Maintenance tasks
|
| Topic 4: Business Continuity | 12% | - Continuity planning
|
| Topic 5: Database Fundamentals | 24% | - Database structure types
|
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NEW QUESTION # 76
Which of the following scripts would set the database recovery model for sys.database?
Answer: D
Explanation:
The script that would set the database recovery model for sys.database is option A. This script uses the ALTER DATABASE statement to modify the recovery model of the sys.database to full with no wait. The other options either have syntax errors, use incorrect keywords, or do not specify the recovery model correctly. Reference: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.1 Given a scenario, perform common database maintenance tasks.
NEW QUESTION # 77
Which of the following scripts would set the database recovery model for sys.database?
Answer: D
Explanation:
The script that would set the database recovery model for sys.database is option A. This script uses the ALTER DATABASE statement to modify the recovery model of the sys.database to full with no wait.
The other options either have syntax errors, use incorrect keywords, or do not specify the recovery model correctly. References: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.1 Given a scenario, perform common database maintenance tasks.
NEW QUESTION # 78
Which of the following describes the purpose of a snapshot?
Answer: B
Explanation:
The purpose of a snapshot is to create an image of a database. A snapshot is a copy of the state and content of a database at a specific point in time. A snapshot can be used for various purposes, such as backup and recovery, testing and development, reporting and analysis, etc. A snapshot can be created using various techniques, such as full copy, incremental copy, differential copy, etc. A snapshot can also be created using various tools or commands provided by the database system or software.
NEW QUESTION # 79
(Which of the following is a CPU-intensive operation that improves database performance and information retrieval?)
Answer: A
Explanation:
The correct answer is C. Index optimization. CompTIA DataSys+ identifies index management and optimization as a critical database maintenance activity that can be CPU-intensive but significantly improves query performance and information retrieval. Index optimization involves reorganizing, rebuilding, or analyzing database indexes to ensure they are structured efficiently and aligned with query usage patterns.
Indexes act as data access paths that allow the database engine to locate rows quickly without scanning entire tables. Over time, as data is inserted, updated, or deleted, indexes can become fragmented, inefficient, or poorly aligned with current workloads. Index optimization processes use CPU resources to analyze index statistics, rebalance tree structures, and rebuild index pages. While these operations temporarily consume CPU cycles, they result in faster query execution, reduced I/O operations, and improved overall system performance.
Option A, database compression, can reduce storage usage and I/O, but it primarily trades CPU for disk savings and does not directly optimize query access paths. Option B, patch management, involves applying software updates and security fixes and does not improve data retrieval performance. Option D, data corruption checks, are integrity and validation operations designed to detect or prevent data loss, not to enhance query performance.
CompTIA DataSys+ emphasizes that performance tuning often involves deliberate resource trade-offs. Index optimization is a prime example: it consumes CPU during maintenance windows to deliver long-term performance benefits during normal database operations. Well-optimized indexes reduce query latency, improve response times, and enhance user experience, especially in read-heavy or reporting environments.
DataSys+ also highlights best practices such as scheduling index maintenance during low-usage periods and monitoring CPU impact to avoid service disruptions. When implemented correctly, index optimization is one of the most effective ways to improve database performance and information retrieval.
Therefore, the CPU-intensive operation that improves database performance and information retrieval is index optimization, making option C the correct and fully verified answer.
NEW QUESTION # 80
Which of the following would a database administrator monitor to gauge server health? (Choose two.)
Answer: B,E
Explanation:
The two factors that the database administrator should monitor to gauge server health are CPU usage and memory usage. CPU usage is the percentage of time that the processor (CPU) of the server is busy executing instructions or processes. CPU usage indicates how much workload the server can handle and how fast it can process requests. High CPU usage may affect the performance or availability of the server and cause delays or errors. Memory usage is the amount of physical memory (RAM) or virtual memory (swap space) that the server uses to store data or run applications. Memory usage indicates how much space the server has to store temporary or intermediate data or results. High memory usage may affect the performance or availability of the server and cause swapping or paging. The other options are either not relevant or not direct indicators of server health. For example, transaction logs are files that record the changes made by transactions on the database; network sniffer is a tool that captures and analyzes network traffic; domain controllers are servers that manage user authentication and authorization in a network; firewall traffic is the amount of data that passes through a firewall device or software. Reference: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.2 Given a scenario, monitor database performance.
NEW QUESTION # 81
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