HTTP and DNS
Routers and Redundancy
Vocabulary
Building a Network
100

the system responsible for translating domain names like example.com into IP addresses

What is DNS (Domain Name System)? 

100

the inclusion of extra components so that a system can continue to work even if individual components fail, for example by  having more than one path between any two connected devices in a network

What is redundancy? 

100

An agreed-upon set of rules that specify the behavior of some system

What is a protocol? 

100

fiber optic cables, wifi signals, and copper wires physically connect the computers, smart phones, servers, etc. 

What is the physical network? 

200

a protocol for computers to request and share the pages that make up the world wide web on the Internet

What is HTTP (Hypertext Transfer Protocol)?

200

the unique number assigned to each device on the Internet

What is an IP address? 

200

a protocol for sending data across the Internet that assigns unique numbers (IP addresses) to each connected device

What is Internet Protocol? 

200

utilizes 128 bit internet addresses, solving the address shortage issues we face today, was created to allow for Internet devices to expand for a very long time

What is IPv6? 

300

data added to packets to help route them through the network and reassemble the original message

What is Metadata?

300

The maximum amount of data transmitted over an internet connection in a given amount of time, not to be confused with speed, it's actually the volume of information that can be sent over a connection in a measured amount of time – calculated in megabits per second (Mbps)

What is bandwidth? 

300

Can continue to function even in the event of individual component failures

What is fault tolerance? 

300

a computer that provides a service (can be files) to another computer program and its user, also known as the client

What is a server? 

400

a protocol for sending packets that does error checking to ensure all packets are received and properly ordered (accuracy)

What is TCP?

400

Built on a client-server model, this standard internet protocol is used for the transfer of computer files between machines on a network.

FTP

400

Hypertext Markup Language, a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages.

What is HTML?

400

the first and lowest level of the OSI model of computer networking

What is the Physical Layer?

500
a protocol for sending packets quickly with minimal error-checking and no resending of dropped packets

What is UDP?

500

makes sure traffic between computers goes where it needs to go (choosing the shortest path)

What is a router? 

500

an interconnected system of public webpages (including files, webpages, media) accessible through the Internet

What is the World Wide Web?

500

As the top layer of the TCP/IP stack, it combines the functionality of OSI layers 5, 6, and 7 to serve protocols like HTTP, FTP, and SMTP.

What is the Application Layer?
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