Q.What is a web server ? How is it different from web browser ?

Software vs Web Apps: A First Look

Think about the last time you used a calculator. You probably opened an app on your phone — it's there in your app drawer, it opens instantly, and it works even when you're on a plane with no internet. Now think about booking a train ticket on IRCTC. You open a browser, type the website address, and everything happens online — if your internet cuts out mid-booking, you're stuck.

That difference — between something that lives on your device and something that lives on the internet — is the core of software versus web apps.

What is a Software Application?

A software application (often called a "desktop app" or "native app") is a program that you install directly onto your computer or phone. It runs using your device's own processor and memory. The code that makes it work is stored on your device, not somewhere else.

Examples you already know: Microsoft Word, Adobe Photoshop, the calculator on your phone, or a game like Solitaire that came with your computer. These are all software applications.

The key point: once installed, they mostly work without an internet connection. They are self-contained. Updates happen when you choose to download a new version, not automatically every time you open them.

What is a Web Application?

A web application (or "web app") is a program that you access through a web browser — Chrome, Safari, Firefox, Edge. You don't install it. Instead, you type a URL, and the app runs on a remote server somewhere. Your browser acts like a window into that server.

Examples: Gmail, Google Docs, Netflix (when you watch through a browser), online banking portals, and yes, IRCTC. You are not "installing" these — you are visiting them.

The critical difference: web apps need the internet to function (at least for most of their features). The heavy lifting — storing your data, processing your requests — happens on the server, not on your device.

The Core Differences at a Glance

Why This Distinction Matters

For a commerce or humanities student, this isn't just technical trivia — it has real-world consequences.

Cost and business model. Software apps are usually sold as a one-time purchase (you buy Microsoft Office once). Web apps are often subscription-based (you pay monthly for Netflix or Adobe Creative Cloud). Why? Because the company maintains servers and keeps updating the web app — they need ongoing revenue. …

Imagine you are sitting in a busy café, working on your laptop. Anyone walking past could glance at your screen. Worse, someone could peek over your shoulder and see the password you just typed. That feeling of exposure is exactly what browser privacy settings are designed to prevent — except the "peeking" happens invisibly, through code and data, not over your shoulder.

Every time you open a browser, you leave a trail. The websites you visit, the searches you make, the items you click on — all of this gets recorded, stored, and often shared with companies you have never heard of. Browser privacy settings are the controls you have to decide what information you share, how long it is kept, and who gets to see it.

Think of your browser as a house with many windows. By default, most browsers leave the curtains wide open. Privacy settings let you close some curtains, lock certain doors, and decide which visitors can enter. Without adjusting these settings, your browsing habits become a public record — used to target ads, build profiles about your income or health, or even track your location.

Here is what these settings typically control:

• Cookies and site data – Small files websites store on your device to remember you. Some are useful (keeping you logged in), but others track your activity across multiple sites. Privacy settings let you block third-party cookies or clear them automatically when you close the browser.
• Location access – A website can ask for your precise GPS location. You can block this entirely or allow it only for specific sites (like a map service).
• Camera and microphone – Video-call sites need these, but a random news article does not. Privacy settings let you deny access by default and approve it per site.
• History and search suggestions – Your browser remembers every URL you type. You can turn off history, use private/incognito mode, or prevent search engines from suggesting results based on past queries.
• Pop-ups and redirects – Some sites try to force you into unwanted windows. Blocking these prevents both annoyance and potential scams.
• Do Not Track requests – A signal you can send to websites asking them not to track you. However, many sites ignore it — it is more of a polite request than a command. …