How the Internet Works Practice Quiz¶
The following quiz reviews the ideas from the How the Internet Works videos created by Code.org.
- CS20-CS1 Explore the underlying technology of computing devices and the Internet, and their impacts on society.
Quick Review¶
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how-the-internet-works1: What is the best description for the type of network the internet is designed as?
- decentralized
- Yes! The internet is designed to withstand any part of the network being destroyed.
- centralized
- No, there is no centralized authority for the internet, as it is designed to withstand any part of the network being destroyed.
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how-the-internet-works2: A bit (a.k.a. atom of information) can be [choose all that are correct]
- small
- Small isn't a very accurate description...
- 2
- A 2 can not be sent as a bit (on or off).
- 0
- Yes, 0 is used to represent off.
- 1
- Yes, 1 is used to represent on.
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When sending bits from one computer to another over the Internet, the bit may be sent via electric (wire), light waves, or radio waves. The pros/cons of each of these options are:
- electric (wire)
- pro: cheap; con: signal loss
- light
- pro: fast, no signal loss; cons: expensive, hard to work with
- radio
- pro: wireless; con: signal loss
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Match the following definitions.
- IP Address
- a unique number assigned to each device connected to the network
- DNS (Domain Name System)
- used to convert a website name into an IP address
- HTTP
- the language used to communicate between web browsers and servers
- HTML
- the language used to structure the content on websites
- TCP/IP & Routing
- a method to break down and transport packets
- public key encryption
- used whenever you see a lock, or the letters HTTPS, in your browser
What percentage of internet hacks happen due to simple human error?