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| Section | Weight | Objectives |
|---|---|---|
| Database Fundamentals | 24% | - Database structure types and characteristics - Impact of programming on database operations - SQL development, modification, and execution - Scripting methods and environments |
| Data and Database Security | 23% | - Attack types and defense measures - Infrastructure security and threat mitigation - Governance, risk, and compliance - Data security concepts and techniques - Authentication, authorization, and access control |
| Business Continuity | 12% | - Backup and restoration methods - High availability and fault tolerance - Disaster recovery planning and strategies - RTO and RPO definitions and application |
| Database Deployment | 16% | - Migration and integration strategies - Database planning and design considerations - Implementation, testing, and deployment phases |
| Database Management and Maintenance | 25% | - Performance monitoring and reporting - Documentation and configuration management - Routine maintenance processes and tasks - Data lifecycle management |
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NEW QUESTION # 55
A business analyst is using a client table and an invoice table to create a database view that shows clients who have not made purchases yet. Which of the following joins is most appropriate for the analyst to use to create this database view?
Answer: D
Explanation:
The join that is most appropriate for the analyst to use to create this database view is option D.
This join uses the LEFT JOIN clause to combine the client table and the invoice table based on the matching values in the Key column. The WHERE clause filters out the rows where the Invoice.Key column is not null, meaning that the client has made a purchase. The result is a view that shows only the clients who have not made any purchases yet. The other options either do not produce the desired result or have syntax errors. For example, option A would show only the clients who have made purchases, option B would show only the invoices that do not have a matching client, and option C would show all the clients regardless of their purchase status.
NEW QUESTION # 56
A database administrator set up a connection for a SQL Server instance for a new user, but the administrator is unable to connect using the user's workstation. Which of the following is the most likely cause of the issue?
Answer: D
Explanation:
The most likely cause of the issue is that the SQL Server ports to the main machine are closed. SQL Server uses TCP/IP ports to communicate with clients and other servers. If these ports are blocked by a firewall or other network device, the connection will fail. The administrator should check the port configuration on both the server and the user's workstation, and make sure that they are open and match the expected values. The other options are either unlikely or unrelated to the issue. For example, the SQL Server codes performing badly or having many concurrent users may affect the performance or availability of the server, but not prevent the connection entirely; the SQL Server not being tested properly may cause errors or bugs in the functionality or security of the server, but not affect the connection unless there is a configuration problem. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.3 Given a scenario, troubleshoot common database deployment issues.
NEW QUESTION # 57
A new retail store employee needs to be able to authenticate to a database. Which of the following commands should a database administrator use for this task?
Answer: A
Explanation:
The command that the database administrator should use for this task is CREATE USER. The CREATE USER command is a SQL statement that creates a new user account in a database and assigns it a username and a password. The CREATE USER command also allows the database administrator to specify other options or attributes for the user account, such as default tablespace, quota, profile, role, etc. The CREATE USER command is the first step to enable a user to authenticate to a database. The other options are either invalid or not suitable for this task. For example, INSERT USER is not a valid SQL command; ALLOW USER is not a SQL command, but a keyword used in some database systems to grant permissions to users; ALTER USER is a SQL command that modifies an existing user account, but does not create a new one.
NEW QUESTION # 58
What combination of backup strategies provides the fastest backup restoration time?
Answer: D
NEW QUESTION # 59
Which of the following is a result of an on-path attack on a system?
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. 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 # 60
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