Track quiz
Use the table if you get stuck.
| Idea | Remember |
|---|---|
| Networks | A message travels along a path of working links. If one path is cut, it uses another, if there is one. |
| A web address | The part before the slash names the computer. The part after it names the page. |
| Asking and answering | Your phone sends a request. A server sends an answer. Each piece of a page needs its own. |
| Search | A search reads an index built earlier. It lists only pages the engine has visited. |
| Cables and radio | Radio carries the short first hop from a phone. Cables carry most of the rest. |
A cable between two cities is cut. Pages from that city still open, a little slower. Why?
A slash splits a web address in two. What do the two parts do?
A simple page has words and 2 photos. How many requests does it need?
Words appear first on a page. A photo appears a moment later. Why?
You type two words. Results appear at once. What did the engine read?
A page went online this morning. The engine has not visited it. Can a search find it?
A search result is at the top of the list. What does that show?
A friend says a phone has no wire. So its messages touch no cable. Is that right?
You can follow a page from your tap to a far computer. Then you can follow it back. A page waits on a server until a request asks for it.
Next comes Programming with Blocks II. It starts with a box that keeps a number.