¿Cómo funciona internet?
Descubre cómo se conectan los dispositivos, cómo llegan los sitios web a tu pantalla y qué sucede con los datos en el camino.
Preview
Questions with solutions-
1. Elige la respuesta correcta.
¿Qué es internet?
You can send a message from your phone to someone in another country.
- A network that connects many other networks.
- One large computer that stores every website.
- An app used only for sending messages.
Show solution
- A network that connects many other networks.
La web, el correo electrónico y la mensajería son distintas formas de usar la misma red mundial.
-
2. Elige la respuesta correcta.
¿Qué función cumple tu navegador?
You open a recipe website on your phone.
- It provides your home's internet service.
- It turns the website's files into a page you can view.
- It carries data along cables between countries.
Show solution
- It turns the website's files into a page you can view.
Distintos navegadores pueden mostrar el mismo sitio web porque los sitios web siguen reglas comunes.
-
3. Elige la respuesta correcta.
¿Cuál es la función principal del proveedor?
A family pays an internet service provider for a home connection.
- To arrange websites in search results.
- To display web pages on the family's screens.
- To connect the family's home network to the internet.
Show solution
- To connect the family's home network to the internet.
El proveedor ofrece acceso a otras redes; no es dueño de todos los sitios web que visita la familia.
-
4. Completa el espacio en blanco.
Several devices use the same home network. A ___ directs data between this network and the internet.
- router
- browser
- search engine
Piensa en un equipo que conecta redes, no en una herramienta para ver páginas.
Show solution
Several devices use the same home network. A router directs data between this network and the internet.
Un enrutador doméstico puede dar servicio a dispositivos conectados por Wi-Fi o por cable.
-
5. Elige la respuesta correcta.
¿Qué suele transportar los datos a través del océano Atlántico?
You send a photo from the United States to a friend in Europe.
- A direct Wi-Fi connection between the two phones.
- Cables under the ocean.
- Satellite connections used for most internet messages.
Show solution
- Cables under the ocean.
Las conexiones inalámbricas son comunes cerca de los usuarios, pero los cables transportan gran parte de los datos a grandes distancias.
-
6. Elige la respuesta correcta.
Why can you still print?
Your home's internet connection is down, but your laptop can still send a document to your wireless printer.
- The printer provides a replacement internet service.
- The laptop uses the printer to reach distant websites.
- The laptop and printer can communicate on the local network.
Show solution
- The laptop and printer can communicate on the local network.
Wi-Fi can connect nearby devices without internet access. A Wi-Fi signal alone does not mean the internet is working.
-
7. Elige la respuesta correcta.
What is this other computer called?
You visit a website. Another computer stores the site's files and sends them to your browser.
- A web server.
- A home router.
- A web browser.
Show solution
- A web server.
A server can respond to requests from many visitors, not just one.
-
8. Elige la respuesta correcta.
¿Qué ayuda a encontrar el DNS a tu navegador?
You enter a website's name into your browser. The network needs its IP address to reach it.
- A password for entering the website.
- The IP address linked to the website's name.
- A saved copy of every image on the page.
Piensa en el DNS como una libreta de direcciones para los nombres de los sitios web.
Show solution
- The IP address linked to the website's name.
Los nombres de los sitios web son más fáciles de recordar para las personas que las direcciones basadas en números que usan las redes.
-
9. Completa el espacio en blanco.
A large photo does not usually travel across the internet as one complete file. It is divided into smaller pieces called ___.
- web pages
- networks
- packets
Show solution
A large photo does not usually travel across the internet as one complete file. It is divided into smaller pieces called packets.
Enviar fragmentos pequeños permite que una conexión transmita datos de los archivos de distintas personas por turnos.
-
10. Elige la respuesta correcta.
¿Cómo pueden llegar los datos de todos modos?
One connection between two networks stops working. A different route to the destination is still available.
- Routers send the data along the other available route.
- The data crosses the broken connection without a working link.
- A browser removes the need for a network between the two places.
Piensa en cómo el tráfico puede evitar una vía cerrada.
Show solution
- Routers send the data along the other available route.
Tener más de una ruta posible ayuda a que internet siga funcionando cuando falla una parte de la red.
-
11. Elige la respuesta correcta.
¿Cómo es posible esto?
An online video starts playing before the entire video file has arrived.
- The player waits until every part arrives before showing anything.
- The player starts with the parts it has already received.
- The first image contains all the video's pictures and sound.
Show solution
- The player starts with the parts it has already received.
El reproductor suele tener parte del video lista antes de que llegues a verla. Si esta reserva se agota, la reproducción puede pausarse.
-
12. Elige la respuesta correcta.
Which connection better meets the game's needs?
An online game sends small messages and needs quick replies. One connection carries more data at once; another has a shorter delay.
- The one carrying more data, even if replies take longer.
- Either one, because delays cannot affect an online game.
- The one with the shorter delay.
The messages are small, but their arrival time matters.
Show solution
- The one with the shorter delay.
A short network delay is called low latency. It matters when games or conversations need quick replies.
-
13. Elige la respuesta correcta.
¿Qué podrías seguir viendo?
Your browser has saved a copy of a web page on your device. Then your internet connection stops working.
- The saved page, but not changes made after it was saved.
- The page with every new change made on the website.
- Any website, including pages that were never saved.
Show solution
- The saved page, but not changes made after it was saved.
La caché de un navegador almacena copias locales. Estas pueden ayudar con el contenido guardado, pero para recibir información nueva todavía se necesita una conexión.
-
14. Elige la respuesta correcta.
¿Qué te indica HTTPS sobre el vendedor?
A shopping site uses HTTPS, which protects data while it travels between your browser and the site.
- The seller must be honest because only trusted businesses can use HTTPS.
- The connection is protected, but the seller may still be dishonest.
- The seller has promised that every product will arrive.
Proteger una conexión no es lo mismo que verificar un negocio.
Show solution
- The connection is protected, but the seller may still be dishonest.
Una persona deshonesta también puede administrar un sitio HTTPS. Una conexión protegida no garantiza que el vendedor sea confiable.
-
15. Elige la respuesta correcta.
¿Qué explicación corresponde a esta situación?
A news page shows its text, but its video does not load. The text and video come from different servers.
- The text and video must travel together as one file.
- The browser must receive the whole video before showing any text.
- The video server may be unavailable while the text server still works.
Show solution
- The video server may be unavailable while the text server still works.
Una página puede reunir contenido de varios lugares. Si un servicio falla, puede afectar solo una parte de la página.