DNS, TCP/IP, HTTP, HTML

A set of videos produced by Code.org overviewing fundamental concepts of how the internet works.

IP Addresses & DNS

Questions

The world is currently in a transition to using IPv6, a new version of the IP protocol that uses 128 bit addresses instead of 32 bit addresses used by IPv4. What is the main problem that IPv6 was created to solve?

What is the function of DNS?

What is a spoofing attack?

IP Addresses are unique to each computer. (True or False?)

Packets, Routing & Reliability

Questions

What is the difference between Transmission Control Protocol (TCP) and Internet Protocol (IP)?

Packets must be sent in order so the can be reassembled at the end host. (T/F)

All packets must pass through a centralized router to be verified. (T/F)

When your computer requests information from a server, it takes the same path every time. (T/F)

HTTP & HTML

Questions

What does HTTP stand for and what is its purpose?

What is the difference between HTTP and HTTPS?

What does HTML stand for and what is its purpose?

The browser reads through the entire HTML document before sending requests for the images files needed for the page. (T/F)

What is the difference between a GET request and a POST request?

What purpose does a cookie serve in an HTTP request?

The http protocol protects private data from potential hackers by encrypting it before it is sent. (T/F)