The Internet
The Internet
The Evolution of The Internet
- The internet originated as ARPANET in september 1969 and had two main goals:
- With wired connections, a computer or device physically attaches via a cable or wire to a communication device.
- Computers without a communications device can use a wireless modem.
- A cybercafe is a location that provides computers with internet access, usually for a fee.
- A hot spot is a wireless network that provides internet connections to mobile computers and devices.
- An Internet service provides (ISP) is a business that provides individuals and organizations access to the internet free or for a fee. (Unifi, TM, Celcom)
- Bandwidth represents the amount of data that travels over a network
- Megabyte (MB)
- Gigabyte (GB)
•
An
IP address is a sequence of numbers that uniquely identifies each
computer or device connected to the Internet
•
A
domain name is a text-based name that corresponds to the IP address
•
A
DNS server translates the domain name into its associated IP address
The World Wide Web
- A browser is an application that enables users with an Internet connection to access and view webpages on a computer or mobile device
- A home page is the first page that a website displays
- Desktop browsers typically support tabbed browsing
•
A
webpage has a unique address called a web address or URL
•
A
web app is an application stored on a web server that you access through a
browser. (webmail, online auction)
– Web app hosts usually provide
storage for users’ data and information on their servers, known as cloud
storage
Types of Websites
•
A
search engine is software that finds websites, webpages, images, videos,
news, maps, and other information related to a specific topic
•
A
subject directory classifies webpages in an organized set of categories, such
as sports or shopping, and related subcategories
•
Search
operators can help to refine your search
•
Web publishing is the development and maintenance of websites
Media on the Web
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Multimedia refers to any application that combines text with:
•
A graphic is a digital representation of nontext information
•
Graphic formats include BMP, GIF, JPEG, PNG, and TIFF
•
Animation is the appearance of motion created by
displaying a series of still images in sequence
•
Audio includes music, speech, or any other sound
–
Compressed to reduce file size
•
You listen to audio on your computer using a media
player
•
Video consists of images displayed in motion
•
Virtual reality (VR) is the use of computers to
simulate a real or imagined environment that appears as a three-dimensional
space
Other Internet Services
•
Email is the transmission of messages and files via a
computer network
•
An email program allows you to create, send,
receive, forward, store, print, and delete email messages
• An email list is a group of email addresses
used for mass distribution of a message
•
Instant messaging (IM) is a real-time Internet
communications service
•
A chat room is a website or application that
permits users to chat with others who are online at the same time
•
A discussion forum is an online area in which
users have written discussions about a particular subject
•
VoIP (Voice over IP) enables users to speak to other
users over the Internet (viber, whatapp, skype)
•
FTP (File Transfer Protocol) is an Internet standard
that permits file uploading and downloading to and from other computers on the
Internet
•
Many operating systems include FTP capabilities
•
An FTP server is a computer that allows users to
upload and/or download files using FTP
Netiquette
•
Netiquette is the code of acceptable Internet behavior
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