Latest 030-100 Actual Free Exam Questions Updated 85 Questions
Free 030-100 Exam Braindumps certification guide Q&A
NEW QUESTION # 43
Which of the following file formats supports transparency?
- A. SVG
- B. JPEG
- C. Both PNG and SVG
- D. PNG
Answer: C
NEW QUESTION # 44
Which CSS property is used to specify the stacking order of positioned elements?
- A. z-index
- B. align-items
- C. position
- D. display
Answer: A
NEW QUESTION # 45
What is a primary key in an SQL database?
- A. The highest value in a table
- B. A password to access the database
- C. A unique identifier for each row in a table
- D. The main field used for joining tables
Answer: C
NEW QUESTION # 46
In the context of web application architecture, what is the primary function of a web server?
- A. To host web applications and handle HTTP requests
- B. To store client data persistently
- C. To render web pages on the client side
- D. To provide dynamic IP addressing for clients
Answer: A
NEW QUESTION # 47
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 cannot integrate with APIs
- D. It is used only for mobile applications
Answer: B
NEW QUESTION # 48
What are virtual hosts used for in web servers?
- A. To create multiple physical servers from a single hardware server
- B. To increase the server's processing power
- C. To host multiple domain names on a single server
- D. To distribute network traffic evenly across multiple servers
Answer: C
NEW QUESTION # 49
What is the primary purpose of HTTP cookies?
- A. To increase network bandwidth efficiency
- B. To store data on the client's machine for state management
- C. To provide a user interface
- D. To encrypt data transmissions
Answer: B
NEW QUESTION # 50
When adding an image to an HTML document, which attribute is essential for accessibility?
- A. src
- B. href
- C. title
- D. alt
Answer: D
NEW QUESTION # 51
Which of the following is a best practice to prevent SQL injection in NodeJS?
- A. Concatenating user inputs directly into SQL queries
- B. Storing database credentials in the code
- C. Employing prepared statements or parameterized queries
- D. Using regular expressions to sanitize input
Answer: C
NEW QUESTION # 52
Which of the following are true about Cross-Site Request Forgery (CSRF)? (Choose two)
- A. It is exclusively a server-side vulnerability.
- 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 an attack that forces an end user to execute unwanted actions on a web application.
Answer: B,D
NEW QUESTION # 53
What is the primary role of HTTPS and TLS in web communications?
- A. To convert static content to dynamic content
- B. To secure communications between client and server
- C. To increase the speed of data transfer
- D. To compress data to reduce bandwidth usage
Answer: B
NEW QUESTION # 54
What is the primary role of HTML in web development?
- A. To manage the database of a website
- B. To create the structure and content of a web page
- C. To style and layout web pages
- D. To add dynamic functionalities to web pages
Answer: B
NEW QUESTION # 55
In SQL, which command is used to add new data to a table?
- A. UPDATE
- B. INSERT INTO
- C. CREATE
- D. ADD NEW
Answer: B
NEW QUESTION # 56
What is the primary use of the Node Package Manager (NPM)?
- A. To manage packages and dependencies in a Node.js project
- B. To update the Node.js engine
- C. To compile Node.js applications
- D. To create new Node.js modules from scratch
Answer: A
NEW QUESTION # 57
What is the purpose of using em or rem units in CSS?
- A. To specify the opacity of an element
- B. To provide relative sizing based on current or root element's font size
- C. To define colors
- D. To create fixed-size layouts
Answer: B
NEW QUESTION # 58
In HTML, which attribute is used to link to an external CSS file?
- A. type
- B. href
- C. src
- D. rel
Answer: B
NEW QUESTION # 59
Which CSS property is used to set the width of an element's border?
- A. border-length
- B. border-radius
- C. border-style
- D. border-width
Answer: D
NEW QUESTION # 60
How do you execute an SQL query in a NodeJS application?
- A. By invoking the sql.execute() function
- B. Using the query() method of the database connection object
- C. Using the execute() method of the database connection object
- D. With the runQuery() function
Answer: B
NEW QUESTION # 61
How are comments added in CSS?
- A. # This is a comment
- B. /* This is a comment */
- C. // This is a comment
- D. <!-- This is a comment -->
Answer: B
NEW QUESTION # 62
Which programming paradigms are characterized by the use of functions, procedures, and objects?
(Choose three)
- A. Procedural programming
- B. Functional programming
- C. Object-oriented programming
- D. Assembly language programming
Answer: A,B,C
NEW QUESTION # 63
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
Answer: B
NEW QUESTION # 64
What is session hijacking in the context of web sessions?
- A. The use of cookies to store session data
- B. The process of legally transferring a session from one user to another
- C. A method to increase session security
- D. A type of cyberattack where the attacker takes over a user's session
Answer: D
NEW QUESTION # 65
In CSS, what are media queries primarily used for?
- A. To automatically play media files on a webpage
- B. To add media content like video and audio
- C. To create different styles for different media types and screen sizes
- D. To query and retrieve media files from the server
Answer: C
NEW QUESTION # 66
How can CSS be embedded within an HTML document?
- A. Using the <css> tag in the HTML body
- B. Directly within HTML elements using the style attribute
- C. Inside the <script> tag
- D. Within the <style> tag in the head section
Answer: B,D
NEW QUESTION # 67
What is the default method used by HTML forms to send data?
- A. PUT
- B. DELETE
- C. GET
- D. POST
Answer: C
NEW QUESTION # 68
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The Linux Professional Institute Web Development Essentials Exam 030-100 is a certification exam that assesses the fundamental knowledge and skills required for web development in a Linux environment. 030-100 exam covers a range of topics including web development basics, HTML and CSS, JavaScript, PHP, and MySQL. 030-100 exam is designed for individuals who are interested in pursuing a career in web development or enhancing their existing skills.
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