Quiz DS0-001 - Pass-Sure CompTIA DataSys+ Certification Exam Questions Answers

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CompTIA DS0-001 Exam Syllabus Topics:

Section	Weight	Objectives
Database Fundamentals	24%	- Database structure types 1. Relational vs non-relational databases 2. Common systems (e.g., MongoDB, DynamoDB, Cassandra, Neo4j) 3. NoSQL types (document, key-value, column, graph) - Scripting and programming 1. Server-side vs client-side scripting 2. Python, PowerShell, CLI tools - SQL development 1. ACID properties 2. Stored procedures and views 3. DDL, DML, TCL
Database Management and Maintenance	25%	- Monitoring and reporting 1. Alerts and notifications 2. CPU, memory, disk usage monitoring 3. Performance baselines and trending - Maintenance tasks 1. Job scheduling and failure monitoring 2. Replication and backup management 3. Optimization and indexing concepts
Database Deployment	16%	- Implementation and testing 1. Schema validation 2. Stress and regression testing 3. Connectivity testing 4. Version control and deployment validation - Planning and design 1. ERDs and data dictionaries 2. Database architecture design 3. Requirements gathering
Business Continuity	12%	- Continuity planning 1. High availability systems 2. Fault tolerance and redundancy - Disaster recovery 1. Incident recovery procedures 2. Backup and restore strategies
Data and Database Security	23%	- Protection mechanisms 1. Governance and compliance 2. Encryption and data protection 3. Attack prevention and mitigation - Security controls 1. Authentication and authorization 2. Access control and role management

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CompTIA DataSys+ Certification Exam Sample Questions (Q109-Q114):

NEW QUESTION # 109
Which of the following qualifiers removes duplicate records from a SQL SELECT statement when included in a query?

A. UNIQUE
B. SINGLE
C. DISTINCT
D. TOP 1

Answer: C

NEW QUESTION # 110
Which of the following is a result of an on-path attack on a system?

A. A website that has crashed and is no longer accessible
B. An email from an unknown source requesting bank account details
C. A Wi-Fi network that redirects to clones of legitimate websites
D. A web application that returns the addresses of its customers

Answer: C

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.

NEW QUESTION # 111
A database administrator needs to ensure database backups are occurring on a daily basis and at scheduled times. Which of the following actions should the administrator take?

A. Review the server logs for entries.
B. Review the backup media.
C. Check the database schema.
D. Query the database to observe entries.

Answer: A

Explanation:
The action that the administrator should take is to review the server logs for entries. Server logs are files that record the events and activities that occur on a server, such as database backups, errors, warnings, or failures. By reviewing the server logs, the administrator can verify that the database backups are occurring on a daily basis and at scheduled times, and also identify any issues or anomalies that may affect the backup process or the backup quality. The other options are either not relevant or not sufficient for this task. For example, querying the database to observe entries may not show the backup status or frequency, checking the database schema may not reflect the backup schedule or policy, and reviewing the backup media may not indicate the backup time or duration.

NEW QUESTION # 112
A database administrator is concerned about transactions in case the system fails. Which of the following properties addresses this concern?

A. Isolation
B. Consistency
C. Atomicity
D. Durability

Answer: D

Explanation:
The property that addresses this concern is durability. Durability is one of the four properties (ACID) that ensure reliable transactions in a database system. Durability means that once a transaction has been committed, its effects are permanent and will not be lost in case of system failure, power outage, crash, etc. Durability can be achieved by using techniques such as write-ahead logging, checkpoints, backup and recovery, etc. The other options are either not related or not specific to this concern. For example, isolation means that concurrent transactions do not interfere with each other and produce consistent results; atomicity means that a transaction is either executed as a whole or not at all; consistency means that a transaction preserves the validity and integrity of the data. Reference: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.3 Given a scenario, identify common database issues.

NEW QUESTION # 113
Which of the following code snippets would allow a SQL injection?
var name;

A. var name = "Select * from sample_database where name = ' " + name + " '
" ;
var name;
B. name= request.form ("name");
var name;
C. var SQL = "Select * from sample_database where name = ' " + name + " '
" ;
D. name= request.form ("name");
var SQL = "Select * from sample_database where name = ' " + name + " '
" ;
var name;

Answer: D

Explanation:
This code directly concatenates user input into an SQL query string without validation or parameterization, making it vulnerable to SQL injection attacks.

NEW QUESTION # 114
......

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