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| Section | Weight | Objectives |
|---|---|---|
| Database Fundamentals | 24% | - SQL development, modification, and execution - Impact of programming on database operations - Scripting methods and environments - Database structure types and characteristics |
| Data and Database Security | 23% | - Authentication, authorization, and access control - Governance, risk, and compliance - Attack types and defense measures - Infrastructure security and threat mitigation - Data security concepts and techniques |
| Database Deployment | 16% | - Database planning and design considerations - Implementation, testing, and deployment phases - Migration and integration strategies |
| Database Management and Maintenance | 25% | - Data lifecycle management - Documentation and configuration management - Performance monitoring and reporting - Routine maintenance processes and tasks |
| Business Continuity | 12% | - Backup and restoration methods - RTO and RPO definitions and application - High availability and fault tolerance - Disaster recovery planning and strategies |
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NEW QUESTION # 97
Which of the following is a result of an on-path attack on a system?
Answer: B
Explanation:
A result of an on-path attack on a system is a Wi-Fi network that redirects to clones of legitimate websites. An on-path attack is a type of attack that intercepts and modifies the traffic between two parties without their knowledge or consent. An attacker can use an on-path attack to create a rogue Wi-Fi network that mimics a legitimate one, and then redirect the users to fake websites that look like the ones they intended to visit. The attacker can then steal the users' personal or financial information, such as usernames, passwords, credit card numbers, or bank account details. The other options are either results of different types of attacks or not related to attacks at all. For example, a website that has crashed and is no longer accessible may be a result of a denial-of-service attack, an email from an unknown source requesting bank account details may be a result of a phishing attack, and a web application that returns the addresses of its customers may be a result of a poor design or a data breach. Reference: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.4 Given a scenario, identify common types of attacks against databases.
NEW QUESTION # 98
A database administrator needs to provide access to data from two different tables to multiple group users in order to facilitate ongoing reporting. However, some columns in each table are restricted, and users should not be able to see the values in these columns.
Which of the following is the best action for the administrator to take?
Answer: C
Explanation:
The best action for the administrator to take is to create a view. A view is a virtual table that shows a subset of data from one or more tables. The administrator can use a view to provide access to data from two different tables to multiple group users without exposing the restricted columns. The view can also simplify the queries and improve the performance of the reporting process. The other options are either not suitable for this scenario or do not address the requirement of hiding some columns from users. For example, creating a stored procedure would require additional coding and execution, creating a csv export would create a static file that may not reflect the latest data changes, and creating a trigger would perform an action in response to an event rather than provide access to data. Reference: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.2 Given a scenario, create database objects using scripting and programming languages.
NEW QUESTION # 99
A database administrator would like to create a table named XYZ. Which of the following queries should the database administrator use to create the table?
Answer: C
Explanation:
The query that the administrator should use to create the table is option B. This query uses the CREATE TABLE statement to define a new table named XYZ with three columns: ID, Name, and Age. Each column has a data type and a constraint, such as NOT NULL, PRIMARY KEY, or CHECK. The other options either have syntax errors, use incorrect keywords, or do not specify the table name or columns correctly. Reference: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.1 Given a scenario, identify and apply database structure types.
NEW QUESTION # 100
Which of the following database instances are created by default when SQL Server is installed? (Choose two.)
Answer: C,D
Explanation:
The two database instances that are created by default when SQL Server is installed are master and model.
Master is a system database that contains the information and settings of the SQL Server instance, such as the configuration, logins, endpoints, databases, etc. Master is essential for the operation and management of the SQL Server instance, and it should be backed up regularly. Model is a system database that serves as a template for creating new user databases. Model contains the default settings and objects, such as tables, views, procedures, etc., that will be inherited by the new user databases. Model can be modified to customize the new user databases according to specific needs or preferences. The other options are either not database instances or not created by default when SQL Server is installed. For example, root is not a database instance, but a term that refers to the highest level of access or privilege in a system; log is not a database instance, but a file that records the changes made by transactions on a database; view is not a database instance, but an object that represents a subset or a combination of data from one or more tables; index is not a database instance, but a data structure that stores the values of one or more columns of a table in a sorted order. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.3 Given a scenario, update database systems.
NEW QUESTION # 101
(Which of the following is the purpose of including a COLLATE clause in a column definition?)
Answer: B
Explanation:
The correct answer is B. To specify how data is sorted in a database. CompTIA DataSys+ explains that the COLLATE clause defines the collation rules applied to character-based data in a column. Collation determines how string data is compared, sorted, and evaluated, including rules for alphabetical order, case sensitivity, accent sensitivity, and character encoding. These rules directly affect query results, indexing behavior, and comparison operations involving textual data.
When a COLLATE clause is included in a column definition, it overrides the database or server default collation for that specific column. This is especially important in environments that support multiple languages or regional settings, where sorting and comparison rules may differ. For example, case-insensitive collations treat uppercase and lowercase letters as equivalent, while case-sensitive collations do not. DataSys+ highlights that incorrect collation settings can lead to unexpected query results, inefficient indexing, or inconsistent application behavior.
Option A is incorrect because computed columns and indexing behavior are defined through expressions and index definitions, not collation rules. Option C, functional dependency, relates to normalization theory and the relationship between attributes in a relational schema; collation has no impact on dependency enforcement.
Option D describes data validation, which is handled through constraints such as CHECK, NOT NULL, or data types-not collation.
CompTIA DataSys+ emphasizes that DBAs must understand how collation affects sorting, grouping, and comparison operations, especially for reporting and internationalized applications. Proper use of the COLLATE clause ensures consistent behavior across queries and prevents subtle bugs related to string comparisons.
Therefore, the primary purpose of including a COLLATE clause in a column definition is to control how textual data is sorted and compared, making option B the correct and verified answer.
NEW QUESTION # 102
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