Free Lpi 030-100 Practice Test & Real Exam Questions

Exam Code/Number: 030-100
Exam Name/Title: Linux Professional Institute Web Development Essentials Exam 030
Certification Provider: Lpi
Corresponding Certification: Web Development Essentials

Exam Questions: 85
Updated On: Sep 19, 2026

Question #1

Which of the following are true about Cross-Site Request Forgery (CSRF)? (Choose two)

A. It is an attack that forces an end user to execute unwanted actions on a web application.

B. It can be mitigated by using same-origin policy.

C. It involves the execution of malicious scripts in a user's browser.

D. It is exclusively a server-side vulnerability.

Discussion 0

Correct Answer: A,B Vote an answer

Question #2

What is the purpose of the display property in CSS?

A. To add animations to the element

B. To control the color of an element

C. To define how an element is displayed in the document flow

D. To specify the character encoding of the text

Discussion 0

Correct Answer: C Vote an answer

Question #3

What is the primary purpose of HTTP cookies?

A. To increase network bandwidth efficiency

B. To encrypt data transmissions

C. To store data on the client's machine for state management

D. To provide a user interface

Discussion 0

Correct Answer: C Vote an answer

Question #4

In NodeJS, how do you typically retrieve data from a MySQL database?

A. Through direct file reading methods

B. By executing a SELECT query with the mysql module

C. Using the http.get method

D. Using the fetch API

Discussion 0

Correct Answer: B Vote an answer

Question #5

What is the correct HTML element for inserting a line break?

A. <br>

B. <lb>

C. <linebreak>

D. <break>

Discussion 0

Correct Answer: A Vote an answer

Question #6

In Node.js, what is the main advantage of using asynchronous operations?

A. They allow the Node.js server to handle multiple requests simultaneously.

B. They enforce strong typing in JavaScript.

C. They make code execution faster.

D. They automatically optimize memory usage.

Discussion 0

Correct Answer: A Vote an answer

Question #7

What is source code in the context of software development?

A. The original code written by a programmer in a high-level language

B. A compiled version of a program ready to be executed

C. A specialized language used only for web development

D. The output produced after a program is executed

Discussion 0

Correct Answer: A Vote an answer

Question #8

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

A. app.http(path, callback)

B. app.post(path, callback)

C. app.get(path, callback)

D. app.route(path, callback)

Discussion 0

Correct Answer: C Vote an answer

Question #9

In CSS, what does the float property do?

A. Specifies how text should flow around an element

B. Makes an element change its color when floated over

C. Aligns elements vertically

D. Defines the transparency of an element

Discussion 0

Correct Answer: A Vote an answer

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