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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA DataSys+ Certification Exam |
| Exam Number: | DS0-001 |
| Exam Format: | Performance-based, Multiple Choice |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CompTIA Network+ CompTIA Server+ CompTIA A+ |
| Real Exam Qty: | 90 |
| Available Languages: | English |
| Passing Score: | 750 (on a scale of 100-900) |
| Exam Price: | $252 USD |
| Sample Questions: | CompTIA DS0-001 Sample Questions |
| Exam Way: | Pearson VUE testing centers (both in-person and online proctored options may be available) |
| Pre Condition: | Recommended: CompTIA A+ or equivalent; 2 years of hands-on database experience; familiarity with SQL and database concepts |
| Official Syllabus URL: | https://www.comptia.org/certifications/datasys |
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NEW QUESTION # 97
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.
NEW QUESTION # 98
Which of the following outlines why replication is important during database management?
Answer: C
NEW QUESTION # 99
Which of the following services is responsible for assigning, managing, and reclaiming IP addresses on a TCP
/IP-based network?
Answer: A
Explanation:
The service that is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network is DHCP. DHCP, or Dynamic Host Configuration Protocol, is a service that automatically assigns IP addresses and other network configuration parameters, such as subnet mask, default gateway, DNS server, etc., to computers or devices on a network. DHCP helps simplify the administration and management of IP addresses on a network, as well as avoid conflicts or errors caused by manual or duplicate assignments.
DHCP also allows computers or devices to release or renew their IP addresses when they join or leave the network. The other options are either different services or not related to IP addresses at all. For example, DNS, or Domain Name System, is a service that translates domain names into IP addresses and vice versa; LDAP, or Lightweight Directory Access Protocol, is a service that provides access to directory information such as users, groups, or devices on a network; ISMTP is not a valid acronym or service. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.1 Given a scenario, select an appropriate database deployment method.
NEW QUESTION # 100
(Which of the following normal forms (NFs) is considered the most preferable for relational database design?)
Answer: C
Explanation:
The correct answer is C. 3NF (Third Normal Form). According to CompTIA DataSys+, Third Normal Form is widely regarded as the most preferable and practical level of normalization for relational database design in real-world environments. It strikes an optimal balance between reducing data redundancy, maintaining data integrity, and preserving query performance.
To understand why 3NF is preferred, it is important to consider the progression of normalization. First Normal Form (1NF) ensures that tables contain atomic values and no repeating groups. Second Normal Form (2NF) builds on this by eliminating partial dependencies, ensuring that non-key attributes depend on the entire primary key. While these forms improve structure, they do not fully address all redundancy issues.
Third Normal Form (3NF) goes further by removing transitive dependencies, meaning that non-key attributes depend only on the primary key and not on other non-key attributes. This significantly reduces duplication of data and prevents common anomalies during INSERT, UPDATE, and DELETE operations.
CompTIA DataSys+ emphasizes that eliminating transitive dependencies is critical for maintaining long-term data consistency and integrity.
Although Fourth Normal Form (4NF) and higher normal forms exist, DataSys+ notes that they are typically applied only in specialized cases involving complex multi-valued dependencies. Over-normalization beyond
3NF can increase schema complexity, require excessive joins, and negatively impact performance without providing proportional benefits in most transactional systems.
As a result, 3NF is considered the industry-standard target for relational database design. It provides a clean, maintainable schema that supports scalability, reduces redundancy, and aligns well with performance expectations. CompTIA DataSys+ highlights 3NF as the most commonly implemented and recommended normalization level for operational databases.
Therefore, the most preferable normal form for relational database design is 3NF, making option C the correct and fully verified answer.
NEW QUESTION # 101
A database administrator is new to a company and wants to create a document that illustrates the interaction between tables. Which of the following should the administrator create?
Answer: B
Explanation:
The document that the administrator should create to illustrate the interaction between tables is an entity relationship diagram. An entity relationship diagram (ERD) is a graphical representation of the entities (tables), attributes (columns), and relationships (constraints) in a database. An ERD helps the administrator to visualize the structure and design of the database, as well as the dependencies and associations among the tables. The other options are either different types of documents or not related to the interaction between tables. For example, a troubleshooting guide is a document that provides instructions on how to solve common problems or errors in a database; a data dictionary is a document that describes the metadata (information about data) of a database; a database reference manual is a document that provides information on how to use or operate a database. 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 # 102
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