How the internet works Flashcards
About how many kilobytes in a megabyte?
1000
What does HTTP stand for? What is it?
Hypertext transfer protocol; language one computer uses to ask another computer(server) for a document
What is the format of the IPv4 address?
32 bits, in groups of 8, the first part is the region/country, the next parts are more specific
What does URL stand for? What is it?
Uniform resource locator; it is the web address
Each device on the Internet has an address that is a unique number. What is it called?
IP address
What does DNS stand for? What does it do?
Domain name system; the computer uses the dns to find the ip address of the website that you want to reach
How does information get transferred from one computer to another?
In packets of information; packets travel from one place to another in the internet with many paths
What does TCP stand for? What does it do?
Transmission control protocol; manages the sending and receiving of all your data as packets; and making sure all the packets have arrived
How can you tell if your http connection is secure on a browser?
If there is a lock symbol next to the http in the address bar
How many bits in a byte?
8 bits strung together
What are cookies used for?
For a website to remember who you are; an id card which the web browser holds onto
What piece of hardware manages the movement of packets over the Internet?
Routers keep the packets moving through the network smoothly
What is the Internet?
Network communication system for computers
What is one of the most important protocols used in Internet communication?
The internet protocol
What is a protocol?
A well known set of rules that everyone accepts
What is bandwidth?
The maximum transmission capacity of a device (measured in bit rate)
Which has less signal loss: Ethernet or Fibre Optics?
Fibre optic has less signal loss.
What was the first form of the Internet and who was it for?
First form was an experiment of a communication system that could survive a nuclear attack by breaking messages into blocks and sending them as fast as possible (ARPANET). This experiment was for the US Defence Department research project.
What is IPv6?
128 bits per address
What aspects of Internet design make it reliable?
Has many paths for data, making the network fault-tolerant; the more routers we add, the more reliable the internet becomes
How does Wifi data travel through the air?
Through radio waves
What is a bit?
1 = yes, 0 = no
What does HTML stand for? What is it?
Hypertext markup language; language to tell a web browser how to make a page look
Who is in charge of the Internet?
Nobody, the internet is made of a large number of independently operated networks, making it fully distributed.
