HTTP

Question 1

What is a client?

Answer 1

A computer or program that relies on sending a request to another client or software that accesses a service made available by a server.

Question 2

What is a server?

Answer 2

A computer or software that provides functionality for clients.

Question 3

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

Answer 3

GET request

Question 4

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

Answer 4

An HTTP method (POST)
The request target (usually URL)
The HTTP version

Question 5

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

Answer 5

The protocol version (HTTP/1.1),
A status code (200)
A status text (describes the status code)

Question 6

What are HTTP headers?

Answer 6

They let the client and server pass information with an HTTP request/response

Question 7

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

Answer 7

httpie.io or 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

A programming practice that allows you to collect data to update parts of the DOM of an HTML page without needing a full page refresh.

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

A load event