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Lpi Linux Professional Institute Web Development Essentials Exam 030 Sample Questions:

1. Which of the following are roles of web browsers? (Choose two)

A) Hosting web applications
B) Executing JavaScript code
C) Compiling high-level code into machine code
D) Storing cookies for user authentication

2. Which of the following is a best practice to prevent SQL injection in NodeJS?

A) Storing database credentials in the code
B) Employing prepared statements or parameterized queries
C) Concatenating user inputs directly into SQL queries
D) Using regular expressions to sanitize input

3. Which CSS property is used to specify the stacking order of positioned elements?

A) position
B) z-index
C) align-items
D) display

4. What distinguishes an application server from a web server?

A) An application server only serves static content
B) An application server can only handle HTTP requests
C) An application server is responsible for handling database queries
D) An application server provides business logic for an application

5. Which method is used in Express.js to define a route for HTTP GET requests?

A) app.get(path, callback)
B) app.post(path, callback)
C) app.http(path, callback)
D) app.route(path, callback)

Solutions: