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Updated: Jul 16, 2026
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Lpi Linux Professional Institute Web Development Essentials Exam 030 Sample Questions:
1. Which of the following is a best practice to prevent SQL injection in NodeJS?
A) Using regular expressions to sanitize input
B) Employing prepared statements or parameterized queries
C) Storing database credentials in the code
D) Concatenating user inputs directly into SQL queries
2. How can you access query parameters in an Express.js route handler?
A) req.params
B) req.body
C) req.url
D) req.query
3. In the context of web content, how do static and dynamic content differ?
A) Static content is the same for all users, while dynamic content can change based on user interaction.
B) Static content is used for web applications, while dynamic content is used for websites.
C) Static content is served from a database, while dynamic content is served from a file system.
D) Static content is cached by the browser, while dynamic content is not.
4. What is the fundamental difference between relational and non-relational (NoSQL) databases?
A) Relational databases are only used in web development
B) Relational databases are based on table structures, while non-relational databases are not
C) Non-relational databases are not capable of storing large amounts of data
D) Non-relational databases do not use SQL for querying
5. What is the primary role of the WHERE clause in an SQL query?
A) To limit the number of returned records
B) To specify which table to select or delete data from
C) To define the conditions that must be met for rows to be included in the result set
D) To join multiple tables
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: C |
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