How Does the Internet Work?
Discover how devices connect, how websites reach your screen, and what happens to data along the way.
Preview
Questions with solutions-
1. پاسخ درست را انتخاب کنید.
What is the 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.
The web, email, and messaging are different ways to use the same worldwide network.
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2. پاسخ درست را انتخاب کنید.
What job does your browser do?
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.
Different browsers can display the same website because websites follow shared rules.
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3. پاسخ درست را انتخاب کنید.
What is the provider's main role?
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.
The provider offers access to other networks; it does not own all the websites the family visits.
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4. جای خالی را پر کنید.
Several devices use the same home network. A ___ directs data between this network and the internet.
- router
- browser
- search engine
Think about equipment that connects networks, rather than a tool for viewing pages.
Show solution
Several devices use the same home network. A router directs data between this network and the internet.
A home router can serve devices connected by Wi-Fi or by cable.
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5. پاسخ درست را انتخاب کنید.
What usually carries the data across the Atlantic Ocean?
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.
Wireless connections are common near users, but cables carry much of the data over long distances.
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6. پاسخ درست را انتخاب کنید.
Why can printing still work?
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.
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7. پاسخ درست را انتخاب کنید.
What is the other computer's role?
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.
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8. پاسخ درست را انتخاب کنید.
What does DNS help your browser find?
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.
Think of DNS as an address book for website names.
Show solution
- The IP address linked to the website's name.
Website names are easier for people to remember than the number-based addresses networks use.
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9. جای خالی را پر کنید.
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.
Sending small pieces lets a connection carry data from different people's files in turn.
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10. پاسخ درست را انتخاب کنید.
How can the data still arrive?
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.
Think about how traffic can avoid a closed road.
Show solution
- Routers send the data along the other available route.
Having more than one possible route helps the internet keep working when part of a network fails.
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11. پاسخ درست را انتخاب کنید.
How is this possible?
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.
The player often keeps some video ready ahead of what you are watching. If this supply runs out, playback may pause.
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12. پاسخ درست را انتخاب کنید.
Which connection better meets the game's need?
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.
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13. پاسخ درست را انتخاب کنید.
What might you still be able to see?
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.
A browser's cache stores local copies. These can help with saved content, but receiving new information still needs a connection.
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14. پاسخ درست را انتخاب کنید.
What does HTTPS tell you about the seller?
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.
Protecting a connection is different from checking a business.
Show solution
- The connection is protected, but the seller may still be dishonest.
A dishonest person can also run an HTTPS site. A protected connection does not guarantee a trustworthy seller.
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15. پاسخ درست را انتخاب کنید.
Which explanation fits this situation?
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.
A page can bring together content from several places. One failed service may affect only part of the page.