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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Deployment | 16% | - Planning and design
|
| Topic 2: Database Fundamentals | 24% | - SQL development
|
| Topic 3: Business Continuity | 12% | - Disaster recovery
|
| Topic 4: Database Management and Maintenance | 25% | - Maintenance tasks
|
| Topic 5: Data and Database Security | 23% | - Protection mechanisms
|
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NEW QUESTION # 75
Which of the following is most likely to prevent tampering with server hardware that houses data?
Answer: D
Explanation:
The option that is most likely to prevent tampering with server hardware that houses data is biometric locks. Biometric locks are devices that use biological characteristics, such as fingerprints, facial recognition, iris scan, etc., to control access to a physical location or resource. Biometric locks help prevent tampering with server hardware that houses data by restricting unauthorized entry or theft of the hardware by intruders or attackers. Biometric locks also provide higher security and convenience than other types of locks, such as keys or passwords, which can be lost, stolen, or forgotten. The other options are either not related or not effective for this purpose. For example, a strong password policy is a set of rules or standards for creating and managing passwords for user accounts or systems; a network firewall is a device or software that controls the incoming and outgoing traffic on a network based on a set of rules or policies; surveillance cameras are devices that capture and record video footage of a physical location or resource. Reference: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.2 Given a scenario, implement security controls for databases.
NEW QUESTION # 76
A database administrator is updating an organization's ERD. Which of the following is the best option for the database administrator to use?
Answer: C
Explanation:
The best option for the database administrator to use to update an organization's ERD is a UML tool. A UML tool is a software application that allows users to create, edit, and visualize diagrams using the Unified Modeling Language (UML). UML is a standard language for modeling software systems and their components, such as classes, objects, relationships, behaviors, etc. UML can also be used to create entity relationship diagrams (ERDs), which are graphical representations of the entities (tables), attributes (columns), and relationships (constraints) in a database. A UML tool can help the administrator to update an organization's ERD by providing features such as drag-and-drop, templates, symbols, validation, etc. The other options are either not suitable or not optimal for this task. For example, a word processor is a software application that allows users to create and edit text documents; a spreadsheet is a software application that allows users to organize and manipulate data in rows and columns; an HTML editor is a software application that allows users to create and edit web pages using HyperText Markup Language (HTML). 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 # 77
Which of the following computer services associates IP network addresses with text-based names in order to facilitate identification and connectivity?
Answer: C
Explanation:
The computer service that associates IP network addresses with text-based names in order to facilitate identification and connectivity is IDNS. IDNS, or Internet Domain Name System (DNS), is a service that translates domain names into IP addresses and vice versa. Domain names are human-readable names that identify websites or devices on the internet, such as www.comptia.org or www.google.com. IP addresses are numerical identifiers that locate websites or devices on the internet, such as 104.18.26.46 or 142.250.72.238.
IDNS helps users to access websites or devices using domain names instead of IP addresses, which are easier to remember and type. IDNS also helps administrators to manage websites or devices using domain names instead of IP addresses, which are more flexible and scalable. The other options are either different computer services or not related to IP network addresses or text-based names at all. For example, LDAP, or Lightweight Directory Access Protocol, is a service that provides access to directory information such as users, groups, or devices on a network; NTP, or Network Time Protocol, is a service that synchronizes the clocks of computers or devices on a network; DHCP, or Dynamic Host Configuration Protocol, is a service that assigns IP addresses and other network configuration parameters to computers or devices on a network. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.1 Given a scenario, select an appropriate database deployment method.
NEW QUESTION # 78
Which of the following should a company develop to ensure preparedness for a fire in a data center?
Answer: C
Explanation:
The document that a company should develop to ensure preparedness for a fire in a data center is a disaster recovery plan. A disaster recovery plan is a document that outlines how an organization will continue its operations in the event of a disaster or disruption, such as fire, flood, earthquake, cyberattack, etc. A disaster recovery plan typically includes the following elements: - The objectives and scope of the plan - The roles and responsibilities of the staff involved - The identification and assessment of the risks and impacts - The strategies and procedures for restoring the critical functions and data - The resources and tools required for the recovery process - The testing and maintenance schedule for the plan A disaster recovery plan helps an organization to minimize the damage and downtime caused by a disaster, as well as to resume normal operations as soon as possible. The other options are either different types of documents or not specific to fire preparedness. For example, a deployment plan is a document that describes how a system or software will be installed or launched; a backup plan is a document that specifies how data will be copied and stored for backup purposes; a data retention policy is a document that defines how long data should be kept and when it should be deleted or archived.
NEW QUESTION # 79
(A developer needs to integrate a trigger to execute an action in a database. Which of the following SQL snippets is a correct use of a trigger?)
Answer: D
Explanation:
Option D is the only snippet that demonstrates a valid trigger timing and event pairing as commonly tested for DataSys+ objectives around database automation and enforcing data integrity. In mainstream relational databases that support row-level triggers (for example, MySQL/MariaDB-style syntax), triggers are typically defined to fire BEFORE or AFTER a DML event such as INSERT, UPDATE, or DELETE. Option D uses BEFORE UPDATE, which is a recognized pattern: it runs automatically prior to an update operation, allowing the database to enforce business rules or modify values consistently and centrally.
By contrast, ALTER and DROP are DDL operations and are not generally supported as row-level trigger events in common SQL implementations; they are handled through DDL auditing features, event triggers (in specific platforms), or administrative logging-not through FOR EACH ROW triggers. Therefore, options A and C are incorrect for typical trigger usage patterns expected in DataSys+ scenarios. Option B is also invalid because DURING is not a standard trigger timing keyword; the standard model is BEFORE/AFTER (and in some platforms, INSTEAD OF for views).
One typing/logic note: many platforms require referencing the row being modified (for example, NEW.
column and OLD.column) rather than bare column names, and trigger bodies often use BEGIN ... END plus statement terminators. Still, among the provided choices, D correctly illustrates the concept DataSys+ emphasizes: using triggers to automate consistent rule enforcement on DML changes.
NEW QUESTION # 80
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