Lpi 030-100 Practice Exams
Last updated on Oct 23,2026- Exam Code: 030-100
- Exam Name: Web Development Essentials - Exam 030, version 1.0
- Certification Provider: Lpi
- Latest update: Oct 23,2026
Question #31
Which CSS property is used to set the width of an element’s border?
- A . border-width
- B . border-length
- C . border-style
- D . border-radius
Correct Answer: A
Question #32
What is the fundamental difference between relational and non-relational (NoSQL) databases?
- A . Relational databases are only used in web development
- B . Non-relational databases do not use SQL for querying
- C . Relational databases are based on table structures, while non-relational databases are not
- D . Non-relational databases are not capable of storing large amounts of data
Correct Answer: C
Question #33
How is a comment written in HTML?
- A . <!– comment –>
- B . // comment
- C . /* comment */
- D . # comment
Correct Answer: A
Question #34
In the context of web application architecture, what is the primary function of a web server?
- A . To store client data persistently
- B . To host web applications and handle HTTP requests
- C . To render web pages on the client side
- D . To provide dynamic IP addressing for clients
Correct Answer: B
Question #35
How can you access query parameters in an Express.js route handler?
- A . req.query
- B . req.params
- C . req.body
- D . req.url
Correct Answer: A
Question #36
In CSS, what are media queries primarily used for?
- A . To add media content like video and audio
- B . To create different styles for different media types and screen sizes
- C . To query and retrieve media files from the server
- D . To automatically play media files on a webpage
Correct Answer: B
Question #37
What is the main purpose of WebAssembly in the context of web application development?
- A . To increase the execution speed of client-side scripts
- B . To create complex SQL queries
- C . To manage server-side databases
- D . To handle email services in web applications
Correct Answer: A
Question #38
What is the primary goal of responsive web design?
- A . To ensure websites look the same on all devices
- B . To make websites load faster
- C . To create a visually attractive design
- D . To ensure websites work well on a variety of devices and window or screen sizes
Correct Answer: D
Question #39
In HTML, what is the purpose of the alt attribute in an <img> tag?
- A . To provide a text alternative for the image
- B . To change the image source
- C . To specify a secondary image
- D . To apply styles to the image
Correct Answer: A
Question #40
What is the primary feature of a Single-Page Application (SPA)?
- A . It reloads the entire page for every user interaction
- B . It dynamically updates the current page without reloading
- C . It is used only for mobile applications
- D . It cannot integrate with APIs
Correct Answer: B