Unique Top-selling 030-100 Exams - New 2024 Lpi Pratice Exam
Web Development Essentials Dumps 030-100 Exam for Full Questions - Exam Study Guide
NEW QUESTION # 15
Which of the following are roles of web browsers? (Choose two)
- A. Compiling high-level code into machine code
- B. Storing cookies for user authentication
- C. Executing JavaScript code
- D. Hosting web applications
Answer: B,C
NEW QUESTION # 16
What does 'CSS Grid Layout' provide?
- A. A framework for positioning elements in a grid-based layout system
- B. A method for changing the color of the elements
- C. A built-in spellchecker for text content
- D. A plugin for adding multimedia content
Answer: A
NEW QUESTION # 17
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 handle email services in web applications
- C. To create complex SQL queries
- D. To manage server-side databases
Answer: A
NEW QUESTION # 18
Which CSS property is used to specify the stacking order of positioned elements?
- A. z-index
- B. display
- C. position
- D. align-items
Answer: A
NEW QUESTION # 19
In HTML, which attribute is used to link to an external CSS file?
- A. href
- B. rel
- C. type
- D. src
Answer: A
NEW QUESTION # 20
What is the purpose of the display property in CSS?
- A. To define how an element is displayed in the document flow
- B. To specify the character encoding of the text
- C. To control the color of an element
- D. To add animations to the element
Answer: A
NEW QUESTION # 21
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.
Answer: A
NEW QUESTION # 22
What is the correct syntax for a CSS rule?
- A. { selector : property = value; }
- B. selector { property = value; }
- C. selector -> { property : value; }
- D. selector { property : value }
Answer: D
NEW QUESTION # 23
Which are commonly used HTTP servers? (Choose two)
- A. Adobe Photoshop
- B. Nginx
- C. Apache HTTP Server
- D. Microsoft Excel
Answer: B,C
NEW QUESTION # 24
In Express.js, how are EJS templates rendered?
- A. res.render(templateName, data)
- B. res.ejs(templateName, data)
- C. res.send(templateName, data)
- D. res.template(templateName, data)
Answer: A
NEW QUESTION # 25
In SQL, what is the function of the LIMIT clause?
- A. To group rows that have the same values in specified columns
- B. To restrict the number of rows returned by a query
- C. To specify the join conditions between tables
- D. To sort the result set in ascending or descending order
Answer: B
NEW QUESTION # 26
What is the function of character encoding in HTML?
- A. To add special effects to text
- B. To compress the HTML document
- C. To define the character set used for the document, such as UTF-8
- D. To specify the document's language
Answer: C
NEW QUESTION # 27
What is the correct HTML element for inserting a line break?
- A. <linebreak>
- B. <lb>
- C. <break>
- D. <br>
Answer: D
NEW QUESTION # 28
Which of the following are block-level elements in HTML? (Choose two)
- A. <span>
- B. <img>
- C. <p>
- D. <div>
Answer: C,D
NEW QUESTION # 29
What is the primary difference between HTTP GET and POST methods?
- A. GET is used to upload files, while POST is used to download files.
- B. GET requests can be bookmarked, while POST requests cannot.
- C. GET is secure, while POST is not.
- D. GET sends data in the header, while POST sends data in the request body.
Answer: D
NEW QUESTION # 30
How do you execute an SQL query in a NodeJS application?
- A. Using the execute() method of the database connection object
- B. Using the query() method of the database connection object
- C. By invoking the sql.execute() function
- D. With the runQuery() function
Answer: B
NEW QUESTION # 31
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 # 32
Which of these statements about SQL is true? (Choose two)
- A. SQL is a programming language primarily used for creating websites.
- B. SQL can insert, update, or delete records in a database.
- C. SQL can query a database and retrieve information stored in it.
- D. SQL is case-sensitive when it comes to commands and table names.
Answer: B,C
NEW QUESTION # 33
What is the default method used by HTML forms to send data?
- A. PUT
- B. DELETE
- C. POST
- D. GET
Answer: D
NEW QUESTION # 34
In CSS, what are media queries primarily used for?
- A. To automatically play media files on a webpage
- B. To create different styles for different media types and screen sizes
- C. To add media content like video and audio
- D. To query and retrieve media files from the server
Answer: B
NEW QUESTION # 35
What is the primary role of HTTPS and TLS in web communications?
- A. To increase the speed of data transfer
- B. To secure communications between client and server
- C. To compress data to reduce bandwidth usage
- D. To convert static content to dynamic content
Answer: B
NEW QUESTION # 36
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