Internet basics questions and answers
Browsers, URLs, DNS, Wi-Fi, downloads, phishing and safe digital habits.
These are practice variations, many generated from templates and numeric inputs, not an official question bank. They remain outside search indexing until at least 100 independently reviewed questions across five chapters are available.
Questions and clear answers
01Networking · foundation · Editorial previewWhat does DNS do?+
DNS resolves domain names to information such as IP addresses so devices can reach online services.
02Web · foundation · Editorial previewWhat does HTTPS add to HTTP?+
HTTPS uses authenticated encrypted transport to help protect information in transit.
03Safety · foundation · Editorial previewWhat is phishing?+
Phishing is a deceptive attempt to obtain sensitive information or make people take unsafe actions.
04Web · foundation · Editorial previewHow are upload and download different?+
Upload sends data from your device to a remote service; download brings remote data to your device.
05Download speed · advanced · Editorial previewIn internet basics — Download speed: An update is 2108 MB and the effective download speed stays at 18 MB/s. Find the ideal download time.+
Time = 2108/18 ≈ 117.11 seconds (assuming MB/s, not Mb/s).
06Data units · foundation · Editorial previewIn internet basics — Data units: A data units activity has 2907 files using 2 MB each and 39 MB of extra files. Find total storage.+
Total = 2907 × 2 + 39 = 5853 MB, before filesystem overhead.
07Network speed · foundation · Editorial previewIn internet basics — Network speed: A network speed transfer sends 29648 megabits at a steady 9 megabits/second. Find ideal transfer time.+
Time = size/rate = 29648/9 ≈ 3294.22 seconds, ignoring protocol overhead.
08Password safety · intermediate · Editorial previewIn internet basics — Password safety: An email asks the owner of device 4505 to install a 'security fix' from an unknown link. What should they do?+
Do not install it. Verify updates through the official vendor or operating system, and independently check the sender and domain.
09Browser navigation · foundation · Editorial previewIn internet basics — Browser navigation: You accidentally close a browser tab containing note 305. Which typical shortcut restores a recently closed tab on Windows?+
Ctrl+Shift+T normally reopens a recently closed browser tab, subject to browser and private-mode limitations.
10DNS concepts · advanced · Editorial previewIn internet basics — DNS concepts: A browser cannot resolve training-1104.invalid. Does this automatically prove the user's Wi-Fi is disconnected?+
No. That example uses .invalid, a reserved non-resolving TLD; test a valid site and DNS independently.
11Wi-Fi troubleshooting · intermediate · Editorial previewIn internet basics — Wi-Fi troubleshooting: Computer model Test-1903 cannot open a site while another device works on Wi-Fi network 14. Is a factory router reset the appropriate first step?+
No. Check the failing device's connection, DNS and browser before taking disruptive router-reset actions.
12File transfers · foundation · Editorial previewIn internet basics — File transfers: A backup moves 2702 GB of files at 21 GB/hour. What is the ideal duration?+
Time = 2702/21 ≈ 128.67 hours, without pauses.
13URL awareness · foundation · Editorial previewIn internet basics — URL awareness: Is https://accounts.example.com/login-3501 the same origin as https://example.com?+
No. The hosts accounts.example.com and example.com differ, so they are distinct origins under web origin rules.
14Data plans · intermediate · Editorial previewIn internet basics — Data plans: A connection plan allows 4300 GB and 12 GB are used. What data allowance remains?+
Remaining = 4300 − 12 = 4288 GB.
15Phishing · advanced · Editorial previewIn internet basics — Phishing: A message claims order 100 requires entering a password on an unfamiliar domain. What is the safer response?+
Avoid the supplied link; check the order using the vendor's official app or manually entered site and never disclose credentials to the message.
16Backups · foundation · Editorial previewIn internet basics — Backups: A backup plan covers 899 GB and a verified copy stores 3 GB. How much has not yet been copied?+
Uncopied amount = 899 − 3 = 896 GB (assuming the same units and no duplicate data).
17Download speed · intermediate · Editorial previewIn internet basics — Download speed: An update is 1698 MB and the effective download speed stays at 10 MB/s. Find the ideal download time.+
Time = 1698/10 ≈ 169.8 seconds (assuming MB/s, not Mb/s).
18Data units · foundation · Editorial previewIn internet basics — Data units: A data units activity has 2497 files using 17 MB each and 13 MB of extra files. Find total storage.+
Total = 2497 × 17 + 13 = 42462 MB, before filesystem overhead.
This is an educational practice preview. Answers and board-specific alignment are undergoing editorial review; these are not official exam questions.