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Computer Networks · Class 12 · Web Browsers
networksweb browsers⏱️ 6 min read

Browser SettingsOptional for Computer Science

🎬 This chapter has a 12:38 video: Web Services →

Two students open the same website on the same model of phone and get two different experiences — one sees advertisements popping up, the other does not; one is already logged in, the other is not. The website is the same. The browser settings are not.

1What settings are

Browser settings
Browser settings are the choices you can change inside a web browser to control how it behaves — which page it opens with, what it remembers, where it saves files, and what websites are allowed to do. They belong to the browser on your device, not to the website.

Every browser has them, in a menu usually called Settings or Options (in Chrome: the ⋮ menu → Settings). The names differ a little from browser to browser; what they do does not.

The settings, one at a time

Pick a setting, then switch it and watch the same browser behave differently.

Home page. The page the browser opens when it starts, and when you press the Home button.
Settings → On startup / Home button
Sunrise School
sunriseschool.example/home
🏫 Sunrise School

Home page set to the school site — this is what opens.

Set it to your school's site and every new window starts there instead of a blank page.

2The settings you should know

SettingWhat it decides
Home pageThe page the browser opens with, and where the Home button goes
Browsing historyThe list of pages you have visited — and clearing it
CacheSaved copies of page files, so a repeat visit loads fast
Download locationThe folder every downloaded file is saved into
Cookies and site dataWhether websites may store cookies on your computer
Pop-up blockerWhether a site may open extra windows by itself
Default search engineWhere words typed in the address bar are sent
Privacy / incognitoBrowsing without saving history, cookies or form data
History and cache are not the same thing
History is a list of addresses you visited. Cache is copies of the files — pictures, stylesheets — kept so the next visit is faster. Clearing history makes the browser forget where you went; clearing the cache makes the next visit slower but fresher. Students mix these up in exams every year.
A page looks old or broken? Clear the cache.
If a website has been updated but your browser keeps showing the old version, it is serving you the copy in its cache. Clearing the cache forces it to download the page again.

3Settings and your privacy

History, cache and cookies are all records of what you did, stored on the computer you used. On a shared or school computer, that matters: the next person can see where you went and may still be logged into your accounts.

What to do on a shared computer
Use a private / incognito window, which saves no history or cookies when it is closed — and if you forgot, clear browsing history, cookies and cache before you leave. Always log out; closing the tab is not logging out.

4From the board papers

1
What is the function of a web browser? Name any two web browsers.CBSE board exam 2026 (compartment)
2 marks
▶Show the answer

A web browser is the software that requests a web page from a web server using its URL and displays it on screen. Two commonly used browsers: Google Chrome and Mozilla Firefox.

2
Which amongst the following is not an example of a browser? (i) Chrome   (ii) Firefox   (iii) Avast   (iv) EdgeCBSE sample paper 2022–23
1 mark
▶Show the answer

(iii) Avast. Avast is antivirus software. Chrome, Firefox and Edge are web browsers.

3
Differentiate between browsing history and cache memory of a browser. (Practice)
2 marks
▶Show the answer

Browsing history is the list of web pages visited, kept with their addresses and the time of the visit. The cache is the browser’s store of copies of page files — images, stylesheets, scripts — kept so that a page visited again loads faster without downloading everything a second time.

What the browser itself does, step by step, is on the Web Browser page; the cookies setting gets a page of its own in Cookies.

5Check yourself

Quick Check

Riya clears her browsing history but a website still greets her by name. Why?

Quick Check

Which setting decides the page a browser opens when it starts?

Quick Check

A school website was updated yesterday, but Arjun's browser keeps showing last week's notice. The most likely fix is to: