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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data and Database Security | 23% | - Governance, risk, and compliance - Infrastructure security and threat mitigation - Authentication, authorization, and access control - Attack types and defense measures - Data security concepts and techniques |
| Topic 2: Database Deployment | 16% | - Implementation, testing, and deployment phases - Migration and integration strategies - Database planning and design considerations |
| Topic 3: Business Continuity | 12% | - Disaster recovery planning and strategies - High availability and fault tolerance - RTO and RPO definitions and application - Backup and restoration methods |
| Topic 4: Database Management and Maintenance | 25% | - Performance monitoring and reporting - Documentation and configuration management - Routine maintenance processes and tasks - Data lifecycle management |
| Topic 5: Database Fundamentals | 24% | - Database structure types and characteristics - Impact of programming on database operations - SQL development, modification, and execution - Scripting methods and environments |
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質問 # 36
A database administrator is assisting developers with finding the best tables and columns to include in an application. Which of the following resources is the most relevant for this task?
正解：D
解説：
A data dictionary provides detailed information about database tables, columns, and their attributes, helping developers understand the structure and relationships to select the best tables and columns for the application.
質問 # 37
Which of the following statements best classifies a rollback in a database?
正解：B
解説：
A rollback is a Transaction Control Language (TCL) command used to undo changes made during a transaction, ensuring database integrity by reverting to a previous stable state.
質問 # 38
Which of the following is the correct order of the steps in the database deployment process?
A)
1. Connect
2. Install
3. Configure
4. Confirm prerequisites
5. Validate
6. Test
7. Release
B)
1. Configure
2. Install
3. Connect
4. Test
5. Confirm prerequisites
6. Validate
7. Release
C)
1. Confirm prerequisites
2. Install
3. Configure
4. Connect
5. Test
6. Validate
7. Release
D)
1. Install
2. Configure
3. Confirm prerequisites
4. Connect
5. Test
6. Validate
7. Release
正解：D
解説：
The correct order of the steps in the database deployment process is option C. This order follows the best practices for deploying a database system, which are:
Confirm prerequisites: Check the system requirements and compatibility of the database software and tools before installation.
Install: Install the database software and tools on the target server or platform.
Configure: Configure the database settings and parameters according to the specifications and needs of the application or organization.
Connect: Connect the database to the network and other systems or applications that will access it.
Test: Test the functionality and performance of the database system and verify that it meets the expectations and requirements.
Validate: Validate the data quality and integrity of the database system and ensure that it complies with the standards and regulations.
Release: Release the database system to production and make it available for use by end-users or customers. The other options do not follow this order and may result in errors, inefficiencies, or security issues. Reference: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.1 Given a scenario, install and configure database software and tools.
質問 # 39
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.
質問 # 40
Which of the following DR techniques uses a disk to update content in parallel with the main disk so a real-time backup is available?
正解：B
解説：
Mirroring maintains a real-time copy of data by writing simultaneously to a secondary disk, ensuring an up-to-date backup is always available.
質問 # 41
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