Download [Latest Update] CompTIA DS0-001 Actual Exam Practice Questions Shared Online and more Exercises Wireless Networking in PDF only on Docsity!
2024 Latest leads4pass DS0-001 PDF and VCE dumps Download
DS0-
Q&As
CompTIA DataSys+
Pass CompTIA DS0-001 Exam with 100% Guarantee
Free Download Real Questions & Answers PDF and VCE file from:
https://www.leads4pass.com/ds0-001.html
100% Passing Guarantee
100% Money Back Assurance
Following Questions and Answers are all new published by CompTIA
Official Exam Center
2024 Latest leads4pass DS0-001 PDF and VCE dumps Download
QUESTION 1
Which of the following database instances are created by default when SQL Server is installed? (Choose two.)
A. Root
B. Master
C. Log
D. Model
E. View
F. Index
Correct Answer: BD
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.
QUESTION 2
A database administrator wants to remove inactive customers from a database. Which of the following statements should the administrator use?
2024 Latest leads4pass DS0-001 PDF and VCE dumps Download
B. Create a view.
C. Create a csv export.
D. Create a trigger.
Correct Answer: B
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. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.2 Given a scenario, create database objects using scripting and programming languages.
QUESTION 4
Which of the following sets the age requirement for data that should be recovered after a major disaster?
A. MTBF
B. RTO
C. MTTF
D. RPO
Correct Answer: D
The option that sets the age requirement for data that should be recovered after a major disaster is RPO. RPO, or Recovery Point Objective, is a metric that defines the maximum amount of data that can be lost or acceptable data loss in the event of a disaster or disruption. RPOindicates how frequently the data should be backed up or replicated to minimize the risk of data loss. RPO also sets the age requirement for data that should be recovered after a major disaster, as it determines how far back in time the recovery process should go. For example, if the RPO is one hour, then the data should be backed up or replicated every hour, and the recovery process should restore the data to the state it was in one hour before the disaster. The other options are either different metrics or not related to data recovery at all. For example, MTBF, or Mean Time Between Failures, is a metric that measures the average time that a system or component operates without failure; RTO, or Recovery Time Objective, is a metric that defines the maximum amount of time that can be taken to restore a system or service after a disaster or disruption; MTTF, or Mean Time To Failure, is a metric that measures the average time that a system or component operates until it fails. References: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5.3 Given a scenario, implement backup and restoration of data.
QUESTION 5
Which of the following firewall types allows an administrator to control traffic and make decisions based on factors such as connection information and data flow communications?
A. Circuit-level
2024 Latest leads4pass DS0-001 PDF and VCE dumps Download
B. Stateful
C. Proxy
D. Packet
Correct Answer: B
The firewall type that allows an administrator to control traffic and make decisions based on factors such as connection information and data flow communications is stateful. A stateful firewall is a type of firewall that tracks the state of each connection and packet that passes through it, and applies rules or policies based on the context and content of the traffic. A stateful firewall can control traffic and make decisions based on factors such as source and destination IP addresses, ports, protocols, session status, application layer data, etc. The other options are either different types of firewalls or not related to firewalls at all. For example, a circuit-level firewall is a type of firewall that monitors and validates the establishment of TCP or UDP connections; a proxy firewall is a type of firewall that acts as an intermediary between the source and destination of the traffic; a packet firewall is a type of firewall that filters packets based on their header information. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.2 Given a scenario, implement security controls for databases.
QUESTION 6
Which of the following is used to write SQL queries in various programming languages?
A. Indexing
B. Object-relational mapping
C. Excel
D. Normalization
Correct Answer: B
The option that is used to write SQL queries in various programming languages is object-relational mapping. Object- relational mapping (ORM) is a technique that maps objects in an object-oriented programming language (such as Java, Python, C#, etc.) to tables in a relational database (such as Oracle, MySQL, SQL Server, etc.). ORM allows users to write SQL queries in their preferred programming language without having to deal with the differences or complexities between the two paradigms. ORM also provides users with various benefits such as code reuse, abstraction, validation, etc. The other options are either not related or not effective for this purpose. For example, indexing is a technique that creates data structures that store the values of one or more columns of a table in a sorted order to speed up queries; Excelis a software application that allows users to organize and manipulate data in rows and columns; normalization is a process that organizes data into tables and columns to reduce redundancy and improve consistency. References: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.2 Given a scenario, execute database tasks using scripting and programming languages.
QUESTION 7
A database administrator manages a database server that is running low on disk space. A lot of backup files are stored on the server\'s disks.
Which of the following is thebestaction for the administrator to take?
A. Move all the backup files to external disks.
2024 Latest leads4pass DS0-001 PDF and VCE dumps Download
Which of the followingbestdescribes this backup plan?
A. Monthly full, daily differential
B. Daily differential
C. Daily full
D. Weekly full, daily incremental
Correct Answer: D
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. References: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5. Given a scenario, implement backup and restoration of database management systems.
QUESTION 9
Which of the following is a reason to create a stored procedure?
A. To minimize storage space
B. To improve performance
C. To bypass case sensitivity requirements
D. To give control of the query logic to the user
Correct Answer: B
A reason to create a stored procedure is to improve performance. A stored procedure is a set of SQL statements or commands that are stored and compiled in the database server, and can be executed by name or by a trigger. A stored procedure can improve performance by reducing the network traffic between the client and the server, as only the name or the parameters of the stored procedure need to be sent, rather than the entire SQL code. A stored procedure can also improve performance by reusing the same execution plan, as the stored procedure is compiled only once and cached in the server memory. The other options are either not true or not relevant for this purpose. For example, a stored procedure does not necessarily minimize storage space, as it still occupies space in the database server; a stored procedure does not bypass case sensitivity requirements, as it still follows the rules of the database system; a stored procedure does not give control of the query logic to the user, as it is defined and maintained by the database administrator or developer. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.
Given a scenario, create database objects using scripting and programming languages.
QUESTION 10
A database administrator has been asked to assign a user the ability to view a data set. Which of the following practices best describes this request?
A. Access control
2024 Latest leads4pass DS0-001 PDF and VCE dumps Download
B. Security audit
C. Database audit
D. Password policy implementation
Correct Answer: A
The practice that best describes this request is access control. Access control is a process that regulates who can access what data in a system based on predefined rules or policies. Access control helps protect data from unauthorized or inappropriate access or modification bygranting or denying permissions or privileges to users or groups based on their roles or identities. By applying access control, the database administrator can assign a user the ability to view a data set without allowing them to change or delete it. The other options are either different practices or not related to this request. For example, security audit is a process that evaluates the security level of a system by identifying vulnerabilities or risks; database audit is a process that monitors and records the activities or events that occur on a database; password policy implementation is a process that defines and enforces rules or standards for creating and managing passwords. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.2 Given a scenario, implement security controls for databases.
QUESTION 11
Which of the following is an attack in which an attacker hopes to profit from locking the database software?
A. Spear phishing
B. Ransomware
C. SQL injection
D. On-path
Correct Answer: B
The attack in which an attacker hopes to profit from locking the database software is ransomware. Ransomware is a type of malware that encrypts the data or files on a system or network and demands a ransom from the victim to restore them. Ransomware can target database software and lock its access or functionality until the victim pays the ransom, usually in cryptocurrency. Ransomware can cause serious damage and loss to the victim, as well as expose them to further risks or threats. Ransomware can be delivered through various methods, such as phishing emails, malicious attachments, compromised websites, etc. The other options are either different types of attacks or not related to locking database software at all. For example, spear phishing is a type of phishing attack that targets a specific individual or organization with personalized or customized emails; SQL injection is a type of attack that inserts malicious SQL statements into an input field or parameter of a web application to manipulate or compromise the underlying database; on-path is a type of attack that intercepts and modifies the data in transit between two parties on a network. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.4 Given a scenario, identify common types of attacks against databases
QUESTION 12
Which of the following NFs is considered themostpreferable for relational database design?
A. 1 NF
B. 3 NF
