HTTP & AJAX

Question 1

What is a client?

Answer 1

soemthign that is requesting something fomr somewhere else

Question 2

What is a server?

Answer 2

provides data to the client that requested the information

Question 3

Which HTTP method does a browser issue to a web server when you visit a URL?

Answer 3

GET

Question 4

What three things are on the start-line of an HTTP request message?

Answer 4

method, request target, http version

Question 5

What three things are on the start-line of an HTTP response message?

Answer 5

version, status code, and description of status code

Question 6

What are HTTP headers?

Answer 6

ways for the client and server to pass additional information with an HTTP request or response

Question 7

Where would you go if you wanted to learn more about a specific HTTP Header?

Answer 7

mdn

Question 8

Is a body required for a valid HTTP request or response message?

Answer 8

no

Question 9

What is AJAX?

Answer 9

programming practice of building complex, dynamic webpages using a technology known as XMLHttpRequest

Question 10

What does the AJAX acronym stand for?

Answer 10

Asynchronous JavaScript And XML

Question 11

Which object is built into the browser for making HTTP requests in JavaScript?

Answer 11

XMLHttpRequest

Question 12

What event is fired by XMLHttpRequest objects when they are finished loading the data from the server?

Answer 12

load event

Question 13

An XMLHttpRequest object has an addEventListener() method just like DOM elements. How is it possible that they both share this functionality?

Answer 13

They share the same prototype property. The event target prototype