How the internet works

Question 1

About how many kilobytes in a megabyte?

Answer 1

1000

Question 2

What does HTTP stand for? What is it?

Answer 2

Hypertext transfer protocol; language one computer uses to ask another computer(server) for a document

Question 3

What is the format of the IPv4 address?

Answer 3

32 bits, in groups of 8, the first part is the region/country, the next parts are more specific

Question 4

What does URL stand for? What is it?

Answer 4

Uniform resource locator; it is the web address

Question 5

Each device on the Internet has an address that is a unique number. What is it called?

Answer 5

IP address

Question 6

What does DNS stand for? What does it do?

Answer 6

Domain name system; the computer uses the dns to find the ip address of the website that you want to reach

Question 7

How does information get transferred from one computer to another?

Answer 7

In packets of information; packets travel from one place to another in the internet with many paths

Question 8

What does TCP stand for? What does it do?

Answer 8

Transmission control protocol; manages the sending and receiving of all your data as packets; and making sure all the packets have arrived

Question 9

How can you tell if your http connection is secure on a browser?

Answer 9

If there is a lock symbol next to the http in the address bar

Question 10

How many bits in a byte?

Answer 10

8 bits strung together

Question 11

What are cookies used for?

Answer 11

For a website to remember who you are; an id card which the web browser holds onto

Question 12

What piece of hardware manages the movement of packets over the Internet?

Answer 12

Routers keep the packets moving through the network smoothly

Question 13

What is the Internet?

Answer 13

Network communication system for computers

Question 14

What is one of the most important protocols used in Internet communication?

Answer 14

The internet protocol

Question 15

What is a protocol?

Answer 15

A well known set of rules that everyone accepts

Question 16

What is bandwidth?

Answer 16

The maximum transmission capacity of a device (measured in bit rate)

Question 17

Which has less signal loss: Ethernet or Fibre Optics?

Answer 17

Fibre optic has less signal loss.

Question 18

What was the first form of the Internet and who was it for?

Answer 18

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.

Question 19

What is IPv6?

Answer 19

128 bits per address

Question 20

What aspects of Internet design make it reliable?

Answer 20

Has many paths for data, making the network fault-tolerant; the more routers we add, the more reliable the internet becomes

Question 21

How does Wifi data travel through the air?

Answer 21

Through radio waves

Question 22

What is a bit?

Answer 22

1 = yes, 0 = no

Question 23

What does HTML stand for? What is it?

Answer 23

Hypertext markup language; language to tell a web browser how to make a page look

Question 24

Who is in charge of the Internet?

Answer 24

Nobody, the internet is made of a large number of independently operated networks, making it fully distributed.