Client-Server

Question 1

What is a client?

Answer 1

In computing, a client is a piece of computer hardware or software that accesses a service made available by a server as part of the client-server model of computer networks.

Question 2

What is a server?

Answer 2

In computing, a server is a piece of computer hardware or software that provides functionality for other programs or devices, called “clients”.

Question 3

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

Answer 3

GET: The GET method request a representation of the specified resource.

Question 4

What is on the first line of an HTTP request message?

Answer 4

1. An HTTP method 2. The request target (usually a URL) 3. The HTTP version

Question 5

What is on the first line of an HTTP response message?

Answer 5

1. The protocol version (usually HTTP/1.1) 2. A status code 3. A status text
   ex. HTTP/1.1 404 Not Found.

Question 6

What are HTTP headers?

Answer 6

HTTP headers let the client and the server pass additional information with an HTTP request or response. An HTTP header consists of its case-insensitive name followed by a colon(“), then by its value.

Question 7

Is a body required for a valid HTTP message?

Answer 7

No. not all requests/ responses have one.