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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Implementation | 22% | - Data Import/Export - Database Objects (Tables, Views, Indexes) - SQL DDL Statements - Data Types and Constraints - Triggers - Stored Procedures and Functions |
| Topic 2: Data Analytics & Engineering | 19% | - Reporting Concepts - Data Governance - ETL Processes - Data Visualization Basics - Data Warehousing Concepts - Data Quality |
| Topic 3: Database Support, Maintenance & Optimization | 20% | - Backup and Recovery Procedures - Performance Monitoring - Query Optimization - Index Management - Database Security (Users, Roles, Permissions) - Patch Management |
| Topic 4: Database Deployment & Planning | 19% | - Disaster Recovery Planning - Database Clustering - Replication Strategies - Database Server Requirements - Capacity Planning - High Availability Architecture |
| Topic 5: Database Fundamentals | 20% | - Data Normalization - CAP Theorem - Database Concepts and Architecture - Data Models (Relational, NoSQL, etc.) - Database Design Principles - ACID Properties |
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NEW QUESTION # 11
A database administrator needs to ensure that a newly installed corporate business intelligence application can access the company's transactional data. Which of the following tasks should the administrator perform first?
Answer: A
Explanation:
The first task that the administrator should perform is to create a new service account exclusively for the business intelligence application. This will ensure that the application has the appropriate permissions and credentials to access the company's transactional data. The other options are either unnecessary, inefficient, or insecure. For example, building a separate data warehouse would require additional resources and time, setting up a nightly FTP data transfer would expose the data to potential breaches, sending the TNS names file would not guarantee that the application can connect to the database, and opening a new port on the database server would create a vulnerability for attackers.
NEW QUESTION # 12
Which of the following offers a DBA the ability to gather important performance metrics to help optimize SQL queries and parameters for a database instance?
Answer: A
Explanation:
Database monitoring provides performance metrics and insights that help a DBA identify bottlenecks and optimize SQL queries and parameters for better performance.
NEW QUESTION # 13
(Which of the following is a characteristic of a multizone region in a disaster recovery policy?)
Answer: D
Explanation:
The correct answer is C. Application high availability. CompTIA DataSys+ describes a multizone region as an architecture that deploys systems across multiple availability zones within the same geographic region to improve availability, fault tolerance, and resilience. Availability zones are physically separate data centers with independent power, cooling, and networking, but they are connected through low-latency links.
A key characteristic of a multizone disaster recovery (DR) design is high availability of applications. By distributing application components and databases across multiple zones, the system can continue operating even if one zone experiences a failure. DataSys+ emphasizes that multizone architectures are primarily designed to protect against localized infrastructure failures, such as power outages or hardware issues within a single zone, while maintaining service continuity.
Option A, three or more availability zones, is incorrect because a multizone region does not require a specific number of zones. Most implementations use two or more zones, and the exact count depends on the cloud provider and design requirements. Option B, a single geographic location, is misleading; while availability zones are within the same broader region, they are still separate physical locations and not a single data center. Option D, active/active deployment on secondary zones, more accurately describes a multi-region or advanced global DR strategy, not a basic multizone regional design. Secondary zones imply geographically separate regions used for regional disaster recovery.
CompTIA DataSys+ clearly distinguishes high availability from disaster recovery. Multizone deployments primarily focus on availability and fault tolerance within a region, while multi-region strategies address large- scale regional outages. In a multizone DR policy, applications are architected to remain available despite zone- level failures.
Therefore, the defining characteristic of a multizone region in a disaster recovery policy is application high availability, making option C the correct and fully verified answer.
NEW QUESTION # 14
Which of the following NoSQL database types best categorizes MongoDB?
Answer: B
Explanation:
The NoSQL database type that best categorizes MongoDB is document. Document databases are databases that store and manage data as documents, which are collections of fields and values in formats such as JSON (JavaScript Object Notation) or XML (Extensible Markup Language). Document databases do not use any schema or structure to organize data, but rather use identifiers or indexes to enable flexible and dynamic access to data based on fields or values. Document databases are suitable for storing large amounts of complex or unstructured data that have variable attributes or nested structures. MongoDB is an example of a document database that uses JSON-like documents to store and query data. The other options are either different types of NoSQL databases or not related to NoSQL databases at all. For example, column-oriented databases are databases that store and manage data as columns rather than rows; graph databases are databases that store and manage data as nodes and edges that represent entities and relationships; key-value stores are databases that store and manage data as pairs of keys and values. References: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.1 Given a scenario, identify common database types.
NEW QUESTION # 15
An account manager, who had employee ID number 0012, resigned from an organization. The account manager's view privileges need to be removed from the customer table. Which of the following commands would be the best option for the organization's database administrator to use to accomplish this task?
REVOKE SELECT
Answer: A
Explanation:
The REVOKE SELECT command removes the user's (employee ID 0012) privilege to view (SELECT) data in the customer table, ensuring appropriate access control.
NEW QUESTION # 16
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