Internet, Browsers & E-mail
🔒 Log in to trackBrowsers, search engines, downloading and uploading
🔒 Log in to trackA browser is the client software that fetches and displays web pages: Chrome, Microsoft Edge, Firefox, Safari, Opera. A search engine is a website that indexes the web and finds pages: Google, Bing, Yahoo, DuckDuckGo. (Google is NOT a browser; Chrome is NOT a search engine - the most repeated trap.)
A webpage is one document (HTML); a website is a collection of related pages; the home page is a site's opening page; a portal bundles services (news, mail, shopping). Pages are written in HTML (HyperText Markup Language) and linked by hyperlinks.
Downloading = copying files FROM a server to your device; uploading = sending files FROM your device TO a server (e.g. attaching to e-mail, posting videos). Cookies are small text files a site stores in your browser (sessions, preferences, tracking); the cache keeps copies of pages/images for faster reloads.
Search tips: quotes "exact phrase", minus -exclude, site:ssc.gov.in restricts to a site, OR widens. Browser shortcuts: Ctrl+T new tab, Ctrl+W close tab, Ctrl+Shift+T reopen closed tab, Ctrl+N window, Ctrl+Shift+N incognito/private, Ctrl+D bookmark, Ctrl+H history, Ctrl+J downloads, F5 refresh, Ctrl+F5 hard refresh, Ctrl+F find in page, Ctrl+L/Alt+D address bar, Ctrl+Enter adds www...com, Ctrl+plus/minus/0 zoom, F11 full screen, Ctrl+S save page, Ctrl+U view source, Ctrl+P print.
Detailed notes
Browser vs search engine — separate jobs
A browser is the program on your device that fetches and displays web pages: Chrome, Microsoft Edge, Firefox, Safari, Opera (Internet Explorer is retired). A search engine is a website that indexes the web and finds pages for your words: Google, Bing, Yahoo, DuckDuckGo. Google is a search engine; Chrome is a browser; Chrome's address bar can USE Google. Exams love the swap: "Google is a browser — true or false?" False.
The browser's everyday tools
| Tool | What it keeps |
|---|---|
| History | every page you visited |
| Bookmarks/Favourites | pages you saved for quick return |
| Cache | copies of pages and pictures, so revisits load faster |
| Cookies | small text files a site stores on you — logins, preferences, tracking |
Cookies are not viruses — they are passive text files; the worry is privacy, not infection. Incognito / private mode opens a window that forgets history and cookies when closed — useful on shared computers. It does not make you anonymous to the websites or the ISP.
Keyboard shortcuts of the browser
| Key | Job |
|---|---|
| Ctrl+T | new Tab |
| Ctrl+N | new window |
| Ctrl+Shift+N | new incognito window (Chrome) |
| Ctrl+H | History panel |
| Ctrl+J | Just-downloaded files (downloads list) |
| Ctrl+D | Drop a bookmark |
| Ctrl+F | Find text on the page |
| F5 / Ctrl+R | refresh the page |
H before J alphabetically: History, then downloads — a common one-mark trap.
Downloading and uploading
- Download = a file travels from a server to your device (songs, PDFs, apps). The browser's downloads list (Ctrl+J) tracks them; the Downloads folder stores them.
- Upload = a file travels from your device to a server (attaching a form, posting a video).
- Streaming = watching or listening as the data arrives, without saving the whole file first.
Using a search engine well
Type specific keywords, not full sentences; put quotes around words that must appear together ("solar mission"); a minus sign removes a word. Results mix ads, links, images and videos — the engine ranks pages by relevance, it does not check truth.
Quick revision
- Chrome/Edge/Firefox/Safari = browsers; Google/Bing/DuckDuckGo = search engines.
- History (Ctrl+H), downloads (Ctrl+J), bookmark (Ctrl+D), new tab (Ctrl+T), incognito Ctrl+Shift+N.
- Cache = speed copies; cookies = site-stored text files (privacy, not viruses).
- Download = server to you; upload = you to server; streaming = play as it arrives.
Types of questions asked
Every way this subtopic shows up in exams — how to recognise it, the formula or logic to use, and a solved example.
Type 1: Browser vs search enginevery common2 practice Q
'Which one is a browser/search engine?' or odd-one-out among Chrome, Firefox, Google, Safari — with Google planted among browsers.
- Browsers (programs): Chrome, Edge, Firefox, Safari, Opera.
- Search engines (websites): Google, Bing, Yahoo, DuckDuckGo.
- The classic trap: Google listed among browsers or Chrome listed among search engines.
Example: Which of the following is a WEB BROWSER?
Chrome (like Edge, Firefox, Safari) — Google and Bing are search engines, programs that live inside browsers.
Type 2: Browser shortcut recallvery common4 practice Q
'Shortcut to open a new tab / history / downloads / bookmark' — with Ctrl+H and Ctrl+J swapped in the options.
- Ctrl+T new Tab, Ctrl+N new window, Ctrl+Shift+N incognito, Ctrl+H History, Ctrl+J downloads, Ctrl+D bookmark, Ctrl+F find on page, F5 refresh.
- H before J: History first, downloads (J) second.
- Ctrl+D is bookmark in browsers but fill-down in Excel — context decides.
Example: The keyboard shortcut that opens the downloads list in Chrome is:
Ctrl+J — Ctrl+H opens History instead.
Type 3: Download, upload, cache and cookiescommon4 practice Q
'Downloading means', 'what does the browser cache store', 'cookies are ___' — direction or definition matching.
- Download = server to your device; upload = your device to server; streaming = play while it arrives.
- Cache = copies kept for faster revisits; history = list of visits.
- Cookies = small text files a site saves (login, preferences, tracking) — passive files, not viruses.
Example: Receiving a file from a web server to your computer is called:
Downloading — sending one the other way is uploading.
Type 4: Incognito and privacy featurescommon2 practice Q
'Incognito mode ___', 'private browsing saves ___' — what is forgotten, what is NOT hidden.
- Incognito/private windows forget history and cookies after closing — good for shared computers.
- They do NOT hide you from websites, the office network or the ISP, and bookmarks you make stay.
- Cookies cleared = stored logins lost in that window.
Example: Which statement about Chrome's Incognito mode is TRUE?
Browsing history and cookies of that window are deleted when it closes — but your ISP and the websites still see the visit.
Shortcut tricks
⚡ Browser vs engine
Browser = the car; search engine = the GPS you ask inside it. Chrome/Edge/Firefox/Safari/Opera = cars. Google/Bing/Yahoo/DuckDuckGo = GPS. If it is a program you install, browser; if it is a website you visit, engine.
Example: Which of these is a web browser - Google, Chrome, Yahoo, Bing?
Chrome (the rest are search engines).
⚡ Ctrl-letter browser map
Tab new, Wipe (close) tab, Drop a bookmark, History, Junk... no - Jetisoned files (Downloads), Normal window, N+Shift No-trace (incognito). F5 = freshen.
Example: Shortcut to reopen a closed tab?
Ctrl+Shift+T.
⚡ Up vs Down
Upload = YOU send up (to the server); Download = server sends down to you. The direction is always relative to YOUR machine.
Example: Saving an e-mail attachment to your PC is?
Downloading.
Where students lose marks
Calling Google a browser or Chrome a search engine.
Confusing Ctrl+H (history) with Ctrl+J (downloads) - H comes before J alphabetically: History before Downloads? No: History=H, Downloads=J is pure memory; the mnemonic is 'H = havens visited (history)'.
Thinking cookies are viruses - cookies are passive text files (privacy issue, not malware).
Practice sets — 17 questions
Sets of 10, mixed across the question types above. Each answer comes with a step-by-step explanation.
Topic test · 10 questions
Suggested time 4 min · wrong answers go to your mistake notebook automatically.