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Sending Bits
The Digital Domain - Sending Bits
| Question | Answer |
|---|---|
| What does the acronym LAN stand for? | local area network |
| What is the type of computer network found in most homes? | LAN (local area network) |
| What component of a network ensures that network traffic reaches the correct destination? | the router |
| What sort of address does a router assign to every device on the network, including itself? | an IP (internet protocol) address |
| What is the name for the chunks in which information travels on a network? | packets |
| What is the most common way for networked devices to communicate with the router in a LAN? | wi-fi |
| There are two ways devices on a LAN can send and receive millions of bits every second. One is via wi-fi. What is the other way? | long wired links called ethernet cables |
| What type of cables make up the internet backbone, stretching across countries and even under the sea? | fiber-optic cables |
| In most LANs the router is combined with another device called a ______________, which allows the LAN to be connected to the rest of the internet. | modem |
| What is the word "modem" short for? | modulator-demodulator |
| What device converts, or modulates, outgoing traffic from the LAN into a form that can be sent on telephone wires, cable tv cables, or optical fibers? | modem |
| What device converts incoming internet traffic into a form that can be passed on to devices on the LAN? | modem |
| Companies called ISPs provide access to the internet. What does ISP stand for? | internet service provider |
| Connected into the internet backbone of fiber-optic cables are powerful _______________ which direct vast numbers of bits toward their destination. A) leased lines B) core routers C) mobile exchanges D) local telephone exchanges | core routers |
| What type of program can access pages of information stored on computers called servers. | browser |
| What does the acronym URL stand for? | uniform resource locator |
| What is the computer language used for writing web pages? | HTML (hypertext markup language) |
| What does HTML stand for? | hypertext markup language |
| What is the term for a link on a webpage that hides a URL? | hyperlink |
| What is the term for text that contains hyperlinks? | hypertext |
| What are the two pieces of information a navigation satellite broadcasts when it sends out its digital radio signal? | its exact position and the time the signal left the satellite |
| How many different satellite signals does a receiver use to work out its own location? | three |
| How many different satellite signals does a receiver need to use to work out its height in addition to its own location? | four |
| What is the best known satellite navigation system? | GPS (global positioning system) |
| What does GPS stand for? | global positioning system |
Created by:
St Rita SD