Exam Questions and Answers for 030-100 Study Guide Questions and Answers!
Linux Professional Institute Web Development Essentials Exam 030 Certification Sample Questions and Practice Exam
NEW QUESTION # 28
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 specialized language used only for web development
- C. The output produced after a program is executed
- D. A compiled version of a program ready to be executed
Answer: A
NEW QUESTION # 29
In CSS, what does the float property do?
- A. Makes an element change its color when floated over
- B. Specifies how text should flow around an element
- C. Defines the transparency of an element
- D. Aligns elements vertically
Answer: B
NEW QUESTION # 30
What is session hijacking in the context of web sessions?
- A. A method to increase session security
- B. The use of cookies to store session data
- C. The process of legally transferring a session from one user to another
- D. A type of cyberattack where the attacker takes over a user's session
Answer: D
NEW QUESTION # 31
What is the primary purpose of using EJS in an Express.js application?
- A. To handle HTTP POST requests
- B. To manage database connection
- C. To serve static files efficiently
- D. To allow server-side rendering of HTML with embedded JavaScript
Answer: D
NEW QUESTION # 32
Which CSS property is used to set the width of an element's border?
- A. border-radius
- B. border-width
- C. border-length
- D. border-style
Answer: B
NEW QUESTION # 33
When adding an image to an HTML document, which attribute is essential for accessibility?
- A. src
- B. title
- C. alt
- D. href
Answer: C
NEW QUESTION # 34
What is the purpose of using em or rem units in CSS?
- A. To define colors
- B. To specify the opacity of an element
- C. To provide relative sizing based on current or root element's font size
- D. To create fixed-size layouts
Answer: C
NEW QUESTION # 35
In Node.js, what is the main advantage of using asynchronous operations?
- A. They enforce strong typing in JavaScript.
- B. They make code execution faster.
- C. They allow the Node.js server to handle multiple requests simultaneously.
- D. They automatically optimize memory usage.
Answer: C
NEW QUESTION # 36
In NodeJS, how do you typically retrieve data from a MySQL database?
- A. Using the http.get method
- B. By executing a SELECT query with the mysql module
- C. Through direct file reading methods
- D. Using the fetch API
Answer: B
NEW QUESTION # 37
Which HTML input type is used for a multi-line text input field?
- A. password
- B. textarea
- C. email
- D. text
Answer: B
NEW QUESTION # 38
Which CSS property is used to control the visibility of an element?
- A. visibility
- B. view
- C. opacity
- D. display
Answer: A,D
NEW QUESTION # 39
What is the correct HTML element for inserting a line break?
- A. <break>
- B. <br>
- C. <lb>
- D. <linebreak>
Answer: B
NEW QUESTION # 40
In CSS, what are media queries primarily used for?
- A. To query and retrieve media files from the server
- B. To automatically play media files on a webpage
- C. To add media content like video and audio
- D. To create different styles for different media types and screen sizes
Answer: D
NEW QUESTION # 41
In HTML, what is the purpose of the alt attribute in an <img> tag?
- A. To specify a secondary image
- B. To provide a text alternative for the image
- C. To apply styles to the image
- D. To change the image source
Answer: B
NEW QUESTION # 42
When creating links to page anchors in HTML, which attribute specifies the section of the page to link to?
- A. target
- B. src
- C. name
- D. href
Answer: D
NEW QUESTION # 43
Which CSS property is used to change the text color of an element?
- A. text-color
- B. font-color
- C. background-color
- D. color
Answer: D
NEW QUESTION # 44
Which of the following are block-level elements in HTML? (Choose two)
- A. <div>
- B. <p>
- C. <span>
- D. <img>
Answer: A,B
NEW QUESTION # 45
What is the primary feature of a Single-Page Application (SPA)?
- A. It is used only for mobile applications
- B. It dynamically updates the current page without reloading
- C. It reloads the entire page for every user interaction
- D. It cannot integrate with APIs
Answer: B
NEW QUESTION # 46
In SQL, which command is used to add new data to a table?
- A. CREATE
- B. UPDATE
- C. ADD NEW
- D. INSERT INTO
Answer: D
NEW QUESTION # 47
Which CSS property is used to specify the stacking order of positioned elements?
- A. position
- B. align-items
- C. z-index
- D. display
Answer: C
NEW QUESTION # 48
What is a primary key in an SQL database?
- A. A unique identifier for each row in a table
- B. The main field used for joining tables
- C. A password to access the database
- D. The highest value in a table
Answer: A
NEW QUESTION # 49
What is the purpose of the position property in CSS?
- A. To determine the method of positioning for an element
- B. To create animated effects
- C. To specify how text is aligned within an element
- D. To define the border style of an element
Answer: A
NEW QUESTION # 50
Which units are commonly used in CSS for responsive design? (Choose two)
- A. Pixels (px)
- B. Centimeters (cm)
- C. Kilograms (kg)
- D. Relative units (em, rem, vw, vh)
Answer: A,D
NEW QUESTION # 51
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