Lesson 3 : The Internet and the World Wide Web Flashcards
-System connecting computers/ resources
Network
- connects network devices over a
relatively short distance. - A networked office building, school, or home usually contains a single LAN.
Local Area Network (LAN)
- a spans a large physical distance. The Internet is the largest ____ spanning the Earth.
- a geographically-dispersed collection of LANs
Wide Area Network (WAN)
a LAN based on WiFi wireless network
technology.
Wireless Local Area Network
- a network spanning a physical area larger than a LAN but smaller than a WAN, such as a city.
- typically owned an operated by a single entity such as a government body or large corporation.
Metropolitan Area Network (MAN)
- a network spanning multiple LANs but smaller than a MAN, such as on a university or local business campus.
Campus Area Network (CAN)
- connects servers to data storage devices through a technology like Fiber Channel.
Storage Area Network
- links high-performance computers with high-speed connections in a cluster configuration.
- Also known as Cluster Area Network.
System Area Network
When did start an experimental Computer Network?
January 2 1969
Hedeveloped the field of packet switching networks while conducting research at the historic RAND organization.
Paul Baran
- The father of the Internet
- Co-designer of the TCP/IP networking protocol. The First named as ARPANET
- Later renamed as INTERNET TCP/IP (Transmission Control Protocol/Internet Protocol)
Vinton Cerf
How to Connect to the Internet?
IP Address: Unique identifier for devices.
Packets: Small data chunks transmitted online.
Router: Directs packets to their destination.
what is the difference between Dial-up
& Cable Modems?
dial-up is slow, while cable modems are fast and always connected
- Provides Internet access and telecommunications equipment.
- Requires user ID, password, and may have a monthly fee.
Internet Service Provider (ISP)
- Files interconnected via hypertext
- Web pages make up a web site
- Home Page
-Links or hyperlinks - Web servers
- Most important service provided by Internet.
- An internet-based hypermedia
World Wide Web
WWW develop by?
Tim Berners-Lee at CERN in 1989.
Father of the World Wide Web and inventor of HTML.
TIm Berners-Lee:
is a software system that is designed to search for information on the World Wide Web.
Search Engine
The search results are generally presented in a line of results often referred to as ___________________
search engine results pages (SERPs).
- Software that fetches and displays web documents (e.g., Chrome, Firefox).
The Web Browser
Standard address for web resources.
- Uniform Resource Locator (URL)
The URL is made up of four components:
- A Scheme
- A Host
- A Path
- A Query String
Protocol used (e.g., HTTP, FTP).
Scheme
Domain name or IP address.
Host
File location on the server.
Path
Additional parameters for requests.
Query String
Identifies the protocol for accessing resources; HTTPS indicates secure communication.
URL Scheme
Combines subdomain, second-level domain, and top-level domain (e.g., .com).
URL Host Name
- Navigates subdirectories like folders in a computer.
URL Path
Provides additional information for resource requests, starting with ‘?’.
URL Query String
Classifications include .com, .gov, .edu, .org, etc.
URL Suffix
- Entity’s existence on the web; importance for individuals and businesses.
Web Presence
Types of Online Communications
discussion groups, chat rooms, video conferencing, webinars, and social networks.
Online transactions; caution advised for personal information.
E-commerce:
- Streaming music, videos, gaming, and their legal aspects.
Online Entertainment
- Includes auctions, banking, and varied payment methods.
Online Shopping
- Facilitates learning through web-based courses and distance learning.
Online Education
- Access to news organizations and informational directories.
Online News and Reference
- Tests administered online; security is a concern.
Online Testing
- Content blocking and filtering; privacy concerns regarding web activities.
Censorship and Privacy Issues
- Small files aiding functionality; can track user activities.
Cookies
- Digitally enabled commercial transactions between organizations and individuals.
- Digitally enabled transactions include all transactions mediated by digital technology
- involve the exchange of value across organizational or individual boundaries in return for products or services.
E-commerce
- Digital enablement of transactions and processes within a firm, involving information systems under the control of the firm
- does not involve commercial transactions across organizational boundaries where value is exchanged
E-business
Major Types of E-Commerce
Market relationships
Business-to-Consumers (B2C)
Business-to-Business (B2B)
Consumer-to-Consumer (C2C)
Technology-based
Peer-to-Peer (P2P)
Mobile Commerce (M-commerce
- Focused on selling to other businesses; largest form of e-commerce.
Business-to-Business E-commerce
- Consumers selling to each other; growth of online marketplaces.
Consumer-to-Consumer E-commerce
- Facilitates sharing files and resources; examples include Napster and Skype.
Peer-to-Peer E-commerce
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Transactions via mobile devices; prevalent in Japan and Europe.
Mobile E-commerce
- Basic functionalities: URL entry, navigation, bookmarks, and settings.
Using Browsers
