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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Implementation | 22% | - Triggers - Stored Procedures and Functions - Database Objects (Tables, Views, Indexes) - Data Import/Export - SQL DDL Statements - Data Types and Constraints |
| Topic 2: Database Deployment & Planning | 19% | - Disaster Recovery Planning - High Availability Architecture - Replication Strategies - Database Clustering - Database Server Requirements - Capacity Planning |
| Topic 3: Database Support, Maintenance & Optimization | 20% | - Performance Monitoring - Query Optimization - Index Management - Patch Management - Backup and Recovery Procedures - Database Security (Users, Roles, Permissions) |
| Topic 4: Data Analytics & Engineering | 19% | - Data Governance - Reporting Concepts - ETL Processes - Data Quality - Data Warehousing Concepts - Data Visualization Basics |
| Topic 5: Database Fundamentals | 20% | - ACID Properties - Database Design Principles - CAP Theorem - Data Normalization - Data Models (Relational, NoSQL, etc.) - Database Concepts and Architecture |
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NEW QUESTION # 28
A company is launching a proof-of-concept, cloud-based application. One of the requirements is to select a database engine that will allow administrators to perform quick and simple queries on unstructured data.
Which of the following would be best suited for this task?
Answer: D
Explanation:
The best suited database engine for this task is MongoDB. MongoDB is a type of non-relational database that stores data as documents in JSON-like format. MongoDB allows administrators to perform quick and simple queries on unstructured data, such as text, images, videos, or social media posts, without requiring a predefined schema or complex joins. MongoDB also supports cloud-based deployment, scalability, and high availability. The other options are either relational databases that require a fixed schema and structure for data, or specialized databases that are designed for specific purposes, such as graph databases for storing and analyzing network data.
NEW QUESTION # 29
A DBA is reviewing the following logs to determine the current data backup plan for a primary data server:
Which of the following best describes this backup plan?
Answer: C
Explanation:
The backup plan that best describes the logs is weekly full, daily incremental. This means that a full backup of the entire database is performed once a week, and then only the changes made since the last backup are backed up every day. This can be inferred from the logs by looking at the size and duration of the backups. The full backups are larger and take longer than the incremental backups, and they occur every seven days. The other backup plans do not match the pattern of the logs. Reference: 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 # 30
Which of the following statements contains an error?
Answer: D
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. Reference: 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 # 31
(A company's database was hacked. A security officer conducted an audit and discovered that an attacker used a rainbow table to break into one of the user accounts to access the database. Which of the following is the best immediate response to this attack?)
Answer: D
Explanation:
The correct answer is D. Password hash salting. According to CompTIA DataSys+ objectives, rainbow table attacks specifically target hashed passwords by using precomputed hash values to quickly reverse weak or unsalted hashes back into their original plaintext passwords. If an attacker successfully used a rainbow table, it strongly indicates that the database stored password hashes without proper salting or used weak hashing algorithms.
Password salting is a defensive technique where a unique random value (the salt) is added to each password before hashing. This ensures that even if two users have the same password, their resulting hashes are different. More importantly, salting renders rainbow tables ineffective because the attacker would need to generate a separate rainbow table for every possible salt value, which is computationally impractical.
DataSys+ highlights salting as a critical immediate control to protect stored credentials once a password compromise is identified.
Option C, strong passwords, is a preventative control but not the best immediate response. Even strong passwords can be compromised if hashes are unsalted and exposed. Option A, security and awareness training, addresses user behavior but does not mitigate the technical weakness exploited in this attack. Option B, implementing security policies and procedures, is important for long-term governance but does not directly stop rainbow table attacks against existing password hashes.
CompTIA DataSys+ emphasizes that when credential storage mechanisms are compromised, administrators must prioritize cryptographic protections at the database level. This includes salting, using strong hashing algorithms, and forcing credential resets. Among the options provided, password hash salting is the most direct and effective response to prevent the same attack vector from succeeding again.
Therefore, the best immediate response is D. Password hash salting, making it the verified and correct answer aligned with CompTIA DataSys+ guidance.
NEW QUESTION # 32
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
Answer: A
Explanation:
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.
NEW QUESTION # 33
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