Podcast
Questions and Answers
What are the main advantages of broadband connections compared to dial-up connections?
What are the main advantages of broadband connections compared to dial-up connections?
Broadband connections are faster than dial-up and allow simultaneous use of telephone and internet.
What is a key disadvantage of dial-up connections?
What is a key disadvantage of dial-up connections?
Dial-up connections are slower than broadband and can keep the phone line busy.
How does Wi-Fi provide internet access in public hotspots, and what is one major disadvantage?
How does Wi-Fi provide internet access in public hotspots, and what is one major disadvantage?
Wi-Fi allows users to access the internet without a phone line in public venues, but it is vulnerable to security issues.
In terms of cost and availability, how does dial-up compare to broadband?
In terms of cost and availability, how does dial-up compare to broadband?
Signup and view all the answers
What mechanism does Wi-Fi use to facilitate private access in homes or businesses?
What mechanism does Wi-Fi use to facilitate private access in homes or businesses?
Signup and view all the answers
What major advantage does WMAX provide over traditional wired infrastructure?
What major advantage does WMAX provide over traditional wired infrastructure?
Signup and view all the answers
In what year was the ARPANET released?
In what year was the ARPANET released?
Signup and view all the answers
Identify one key function of satellites in the context of broadband services.
Identify one key function of satellites in the context of broadband services.
Signup and view all the answers
Name the three ways the internet provides connection.
Name the three ways the internet provides connection.
Signup and view all the answers
Who introduced the World Wide Web, and when?
Who introduced the World Wide Web, and when?
Signup and view all the answers
Study Notes
Internet Basics
- Internet is a global system of interconnected computer networks.
- Uses 'interconnection' and 'networks' to describe the system.
- Networks are collections of two or more computers that share information and resources.
- Internet enables computers worldwide to exchange information.
- Internet is used for e-mail, web browsing, and finding information.
History of Internet
- In 1969, the ARPANET (Advanced Research Projects Agency Network) was created by the University of California at Los Angeles and the University of Utah.
- Connected by 56 kbit/s circuits, sponsored by the U.S. Department of Defense (DoD).
- Goal was to connect computers at different universities and U.S. defense locations.
Working of Internet
- Computers on the Internet are interconnected through smaller networks.
- These networks are linked through gateways to the Internet backbone.
- Computers communicate using TCP/IP (Transmission Control Protocol/Internet Protocol).
- IP handles addresses, TCP breaks data into packets (small pieces), then reassembles them at the destination.
Uses of Internet
- E-commerce (buying and selling)
- Research (journals, magazines)
- Education (online learning)
- E-governance (online forms)
- E-reservation (online bookings)
- Online payments (credit/debit cards)
- Video conferencing
- Social networking
- Entertainment (music, videos, games)
Advantages of Internet
- Faster access to information
- Easier communication with others globally
- Easier advertising and business processes
Disadvantages of Internet
- Cyber frauds (credit card use)
- Unwanted material (child abuse content)
- Spread of viruses
- Accuracy of information isn't always confirmed
- Privacy concerns (messages passing through various computers without security)
Who Governs the Internet?
- The internet is not governed by a single organization.
- There are volunteer groups that coordinate its development.
- Some examples include the Internet Architecture Board (IAB), Internet Engineering Task Force (IETF), Internet Research Task Force (IRT) and Internet Network Information Center (InterNIC).
Connecting to the Internet
- Dial-up Connection: A temporary connection using telephone lines and modems.
- Broadband Connection: High-speed, always-on connection using telephone lines, cable TV lines or power lines (BPL).
- Digital Subscriber Line (DSL): Uses existing copper telephone lines.
- Cable Modem: Uses cable TV lines.
- Broadband over Power Line (BPL): Uses electricity lines as a connection path.
- Wireless Connections: Uses radio waves to connect to the internet
Wireless fidelity (Wi-Fi)
- A universal wireless networking technology using radio frequencies.
- Designed for private and public access in houses, businesses, and public spaces.
Worldwide Interoperability for Microwave Access (WiMAX)
- A broadband wireless technology.
- Provides broadband wireless access at higher speeds and over greater distances than Wi-Fi.
Internet Protocols
- Protocols are rules that govern computer communication over networks
- HTTP (hypertext transfer protocol): the basic protocol used for transferring information across the web via web pages.
- TCP/IP (Transmission Control Protocol/Internet Protocol): A set of rules that computers use to communicate with each other over the internet.
- FTP (File Transfer Protocol): Used to transfer files over the internet.
- Secure Copy Protocol (SCP)
- Secure Shell (SSH): A secure remote login protocol used to create connection from one computer to another.
- SMTP (Simple Mail Transfer Protocol): A protocol used to send and receive emails.
- POP3 (Post Office Protocol Version 3): A protocol used to retrieve emails from a mail server to a local email client.
Internet Services
- Web Pages: Basic unit of web information and can be accessed using a web browser.
- Websites: Made of related web pages.
- Web Browsers: Software applications used to access websites and webpages. E.g., Firefox, Safari, Chrome, opera.
- Hyperlinks: Links to other web pages.
- Hypertext Markup Language (HTML): The markup language used to create web pages.
- URL (Uniform Resource Locator): The address of a web page.
- Domain names: Text-based name that correspond to specific IP addresses.
- Blogs: Online journals used for posting information, opinions or links.
Network Systems
- Internet: Worldwide network of networks.
- Intranet: Company network.
Domain Name System
- Converts human-readable domain names into computer-understandable numerical IP addresses.
World Wide Web (WWW)
- System of Internet servers that supports multimedia and hypertext to access information.
- Electronic messages sent via the internet
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the fundamentals of the Internet, including its definition, history, and how it operates. Learn about the interconnected networks, the ARPANET initiative, and the protocols that facilitate communication between computers. Test your knowledge on the essential aspects of the Internet!
