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| Section | Weight | Objectives |
|---|---|---|
| Business Continuity | 12% | - RTO and RPO definitions and application - Disaster recovery planning and strategies - High availability and fault tolerance - Backup and restoration methods |
| Database Fundamentals | 24% | - Scripting methods and environments - SQL development, modification, and execution - Impact of programming on database operations - Database structure types and characteristics |
| Database Management and Maintenance | 25% | - Documentation and configuration management - Performance monitoring and reporting - Routine maintenance processes and tasks - Data lifecycle management |
| Database Deployment | 16% | - Database planning and design considerations - Migration and integration strategies - Implementation, testing, and deployment phases |
| Data and Database Security | 23% | - Data security concepts and techniques - Authentication, authorization, and access control - Infrastructure security and threat mitigation - Attack types and defense measures - Governance, risk, and compliance |
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NEW QUESTION # 17
A database administrator wants to remove inactive customers from a database. Which of the following statements should the administrator use?
Answer: D
Explanation:
The statement that the administrator should use to remove inactive customers from a database is option A.
This statement uses the DELETE command to delete all the rows from the customer table where the status column is equal to 'inactive'. The other options either have syntax errors, use incorrect commands, or do not specify the condition correctly. 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 # 18
A DBA left the company, and the DBA's account was removed from the system. Soon after, scheduled jobs began failing.
Which of the following would have most likely prevented this issue?
Answer: C
Explanation:
The most likely way to prevent this issue is to use service accounts. Service accounts are special accounts that are used by applications or services to perform tasks or run jobs on behalf of users.
Service accounts have limited permissions and access rights that are tailored to their specific functions. By using service accounts, the DBA can ensure that scheduled jobs can run independently of individual user accounts, and avoid failures due to account removal or changes.
The other options are either not related or not effective for this issue. For example, load balancing is a technique that distributes the workload across multiple servers or resources to improve performance and availability; business continuity plan is a plan that outlines how an organization will continue its operations in the event of a disaster or disruption; assigning a data steward is a process that designates a person who is responsible for ensuring the quality and governance of data.
NEW QUESTION # 19
A database administrator needs to remove a redundant customer table from a database in order to streamline periodic reports. Which of the following commands is best for this task?
Answer: A
Explanation:
The DROP TABLE command permanently removes the entire customer table and its data from the database, streamlining reports and eliminating redundancy.
NEW QUESTION # 20
(A healthcare company relies on contact forms and surveys on its website to properly communicate with patients. To which of the following attacks is the company's data most vulnerable?)
Answer: B
Explanation:
The correct answer is C. SQL injection. According to CompTIA DataSys+ objectives, web-based input mechanisms such as contact forms and online surveys represent a significant attack surface for databases if they are not properly secured. These forms commonly accept user-supplied input that is later processed by backend database queries. If input validation and parameterized queries are not correctly implemented, attackers can exploit this by injecting malicious SQL code into form fields.
SQL injection attacks allow an attacker to manipulate database queries executed by the application. This can result in unauthorized access to sensitive data, data modification, data deletion, or even full database compromise. In a healthcare environment, this risk is especially critical because patient data is highly sensitive and often protected by regulatory requirements. DataSys+ highlights SQL injection as one of the most common and dangerous database-focused attacks due to its direct impact on data confidentiality, integrity, and availability.
Option A, Denial of Service (DoS), primarily affects system availability by overwhelming resources, but it does not directly target data stored within the database. Option B, ransomware, typically requires malware execution on servers or endpoints and is not specifically tied to web form input mechanisms. Option D, brute- force attacks, focus on repeatedly guessing authentication credentials and are more closely associated with login systems rather than data entry forms or surveys.
CompTIA DataSys+ materials emphasize that databases connected to web applications must use strong input validation, stored procedures, prepared statements, and least-privilege database accounts to mitigate SQL injection risks. Because contact forms and surveys directly interact with database queries and rely on untrusted user input, SQL injection represents the most direct and realistic threat in this scenario.
Therefore, SQL injection is the attack type to which the company's data is most vulnerable, making option C the verified and correct answer.
NEW QUESTION # 21
Which of the following is the best way to migrate a large data load from one table to another, considering total time and blocking?
Answer: A
Explanation:
The best way to migrate a large data load from one table to another, considering total time and blocking, is to batch into small loads and run in parallel. This means that the large data load is divided into smaller chunks that can be processed simultaneously by multiple threads or processes. This reduces the total time required for the migration and also minimizes the blocking of other operations on the tables involved. The other options are either less efficient or more prone to blocking. For example, splitting the load size into many transactions may increase the overhead and latency of each transaction; splitting the load size in half and running simultaneously may still cause blocking or contention; batching large loads into one transaction may take longer and lock the tables for longer periods.
NEW QUESTION # 22
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