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

1. What is the purpose of web sockets in the context of HTTP?

A) To increase the loading time of web pages
B) To render graphical content in the browser
C) To enable real-time bidirectional communication between client and server
D) To store large files on the server

2. Which of the following are valid input types in HTML? (Choose two)

A) file
B) upload
C) image
D) date

3. Which CSS property is used to set the width of an element's border?

A) border-style
B) border-width
C) border-radius
D) border-length

4. What is a common way to protect against Cross-Site Scripting (XSS) in a Node.js application?

A) Using prepared SQL statements
B) Sanitizing user input
C) Implementing HTTPS
D) Disabling cookies

5. Which property is used in CSS to change the font of an element?

A) font-weight
B) font-style
C) text-style
D) font-family

Solutions: