How the Internet Works: quiz

Questions 1 to 5 of 24

1. 1. What is the difference between the internet and the web?

   They are the same thingThe web is the cables; the internet is the websitesThe internet is the network of networks; the web is one service that runs on itThe web is older than the internet and replaced it
2. 2. When you open a page in your browser, which side is the client?

   Your browserThe web serverThe DNS serverThe cable
3. 3. You run a web server on your laptop on port 3000. Which address reaches it from your own browser?

   http://127.0.0.1:80http://192.168:3000http://localhost.comhttp://127.0.0.1:3000
4. 4. Why is data sent across the internet as small numbered packets?

   Packets are encrypted by defaultMany senders can share links, lost pieces can be re-sent alone, and packets can take different routesA server can only read 1,500 characters in totalPackets make the data smaller on disk
5. 5. You open http://localhost:3000 and see ERR_CONNECTION_REFUSED. What is the most likely cause?

   Your DNS server is downYour certificate has expiredThe URL path is wrongNothing is listening on port 3000 (the server is not running or uses another port)