MTA HTML5 Application Development Fundamentals 3

Question 1

What does AJAX stand for and what problem does it solve?

Accepted Answer

Asynchronous JavaScript And XML; enables web pages to update content without full page reloads

Answer

AJAX (Asynchronous JavaScript And XML) allows web pages to send and receive data from a server asynchronously, updating parts of a page without requiring a full page refresh.

Question 2

What is the purpose of JavaScript promises?

Accepted Answer

Handling asynchronous operations with a cleaner alternative to nested callbacks

Answer

Promises represent the eventual completion or failure of an asynchronous operation, providing .then() and .catch() methods for cleaner asynchronous code than nested callbacks.

Question 3

Which HTTP method is used to submit data to a server to create a new resource?

Accepted Answer

POST

Answer

The POST HTTP method sends data to the server to create a new resource; it is not idempotent, meaning repeated requests may create multiple resources.

Question 4

What is the purpose of the 'viewport' meta tag in HTML5 mobile development?

Accepted Answer

Configuring how the browser scales the page on mobile devices

Answer

The viewport meta tag instructs mobile browsers on how to scale and size the webpage, typically set to width=device-width, initial-scale=1 for responsive design.

Question 5

What does CSS specificity determine?

Accepted Answer

Which CSS rule applies when multiple rules target the same element

Answer

CSS specificity is the algorithm browsers use to determine which CSS rule wins when multiple conflicting rules target the same element, calculated from selector types.

MTA - Microsoft Technology Associate Practice Test

MTA - Microsoft Technology Associate Practice Test

MTA HTML5 Application Development Fundamentals 3