How Does The Web Work? Flashcards

1
Q

What is the internet?

A

A large network of computers sharing information across the world.

The backbone of the Web and the technical information that makes the Web possible.

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2
Q

What are Packets and how do they transfer data?

A

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.

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3
Q

In reference to packets, why can’t data be sent to a computer all at once and not in packets?

A

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.

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4
Q

What is a Web Page?

A

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.)

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5
Q

What is a Web Server

A

A computer that hosts a website on the internet. It’s like a library that has several sections and can host multiple websites.

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6
Q

What is a Web Browser

A

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!

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7
Q

What is a Search Engine?

A

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.

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8
Q

What is a Website?

A

A collection of web pages which are grouped together and usually connected together in various ways.

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9
Q

What is a Client?

A

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.

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10
Q

What is a Server?

A

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.)

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11
Q

What are IP Addresses?

A

“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.

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12
Q

IP addresses are difficult for humans to remember, so what do people use instead of IP addresses to search up websites?

A

We convert IP addresses into domain names such as google.com that originates from the IP address 142.250.190.78

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13
Q

What are DNS Servers? (Domain Name System)
How do they work?

A

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!

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14
Q

What are Intranets?

A

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!

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15
Q

What are Extranets?

A

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.

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