How Does The Web Work? Flashcards
What is the internet?
A large network of computers sharing information across the world.
The backbone of the Web and the technical information that makes the Web possible.
What are Packets and how do they transfer data?
Separated parts of information that are broken up and transferred.
Packets of an image (for example) are separated into packets of information and sent over to a computer whenever you load an image or website.
In reference to packets, why can’t data be sent to a computer all at once and not in packets?
If data were to be sent all at once to a computer, loading that data (like an image) would only be possible for one person at a time. It would take too long!
Also, if a chunk of that data were corrupted or dropped, using packets instead could make it easier to replace that data.
What is a Web Page?
A document that can be displayed in a web browser. Tend to be written in HTML, has style information (look and feel) scripts (interactivity,) and media (images, sounds, or videos.)
What is a Web Server
A computer that hosts a website on the internet. It’s like a library that has several sections and can host multiple websites.
What is a Web Browser
An application software for accessing the World Wide Web (WWW) or a local website.
A program on your computer the helps you visit websites. EVERY web page runs through a web browser!
What is a Search Engine?
A web service that helps you find other web pages like Google, Yahoo, Bing, etc.
They are normally accessed through a web browser through a web page.
What is a Website?
A collection of web pages which are grouped together and usually connected together in various ways.
What is a Client?
A computer connected indirectly to the internet through an Internet Service Provider (ISP.
Your computer at home is an example of a client!
A client request information from a server, and the server responds with information in return.
What is a Server?
A server is a piece of computer hardware that provides functionality for other programs or devices, which are clients!
Example: Google, Facebook, AOL (although AOL is both a server an ISP.)
What are IP Addresses?
“Internet Protocol.” An address made of a series of 4 numbers separated by periods. ANY computer linked to a network has a specific IP address.
Anything directly or indirectly connected to the internet has its own IP address.
IP addresses are difficult for humans to remember, so what do people use instead of IP addresses to search up websites?
We convert IP addresses into domain names such as google.com that originates from the IP address 142.250.190.78
What are DNS Servers? (Domain Name System)
How do they work?
Acts like an address book for websites.
When you type a web address in your browser, the browser finds the website’s IP address before it can retrieve the website, like searching up an address of a store before you travel there.
DNS can apply to IP addresses a special name your browser can read, domain names!
What are Intranets?
Private networks that are restricted to members of a particular organization. These are used to provide a portal for members to securely access shared resources, collaborate, and communicate!
What are Extranets?
Mostly or totally open private network that allows sharing and collaboration with other organizations. Typically used to safely share information with clients and stakeholders who work closely with a business.
