Random Qs Flashcards
A DNS primary role is to convert______
An IP address to a domain name
how does HTTP run?
runs over TCP/IP and governs communication between web browsers and web servers
How many main DNS servers are there?
13 (Root Servers)
How many total HTTP requests does a browser send for a web page that contains four web resources: an image, a video, a CSS style sheet, and a JavaScript file?
5 One HTTP request is made for the HTML file, and one request is made for each resource.
How many total HTTP requests does a browser send for a web page that does not use any other web resources?
1
In what year did the number of Internet users surpass 3 billion?
2015
Most common HTTP methods?
GET, HEAD, POST, PUT, DELETE
Status 301
Moved permanently. The resource should always be requested at a different URL.
Status 403
Forbidden. the web server does not have permission to access the resource.
Status 500
Internal Server error. Something unexpected happened on the web server
The domain name for the requested path?
Host
What are the parts of an HTTP request/response?
Status line
Zero or more header fields
Empty line
Optional message body
What are the parts of an HTTP request/response?
Status line
Zero or more header fields
Empty line
Optional message body
What is a 404 error?
Page not found
What is a browser?
A program used to view HTML documents, or the World Wide Web.