The Internet is an international Network of Computers

1. The Internet is an international Network of Computers

2. USES OF INTERNET

3. Communicate with people all around the world.

4. Perform banking transactions

5. On line Booking of Flights

6. Buy and sell products/pay on-line.

7. Source of entertainment

8. take any course of your choice and register for online certification exams

9. Search for information on any specific topic

10. To connect to the Internet…. You need the ff. computing device, connection device, Internet Service Provider (ISP).

11. The computing device • can be a personal computer, a portable computer, or even a mobile device, such as a cell phone or a handheld device.

12. A connection device, • such as a modem, to connect your computer to the Internet. • A modem converts digital information into analog information and transmits it over a phone line. • A modem can either be built-in your computer, or externally attached to it.

13. The Modem Modem converts digital signals to analog signals and vice-versa in a process called modulation-demodulation. Living Online Back

14. MODEM

15. Digital signal • Binary code Alphabet Letter: UPERCASE • 01000001 A • 01000010 B • 01000011 C • 01000100 D • 01000101 E

16. An ISP is a company • that provides Internet connectivity to individuals, businesses, and organizations. • It may also provide additional services such as the storage space to share your personal content.

21. Different methods by which you can connect to the Internet. • by using cables, the connection is called a physical connection. by using wireless technology

22. Bandwidth is the amount of data that can be transmitted over a network in a certain amount of time. • is measured in • Mbps (megabits per second), • Kbps (kilobits per second), • or bps (bits per second).

23. If the bandwidth of a network is 1 Mbps, then 1 megabit of data can be transmitted over that network in 1 second.

24. The ACTUAL RATE OF TRANSFER OF DATA will vary depending on the ISP’s equipment, the type of Internet connection, and the number of people using the same connection at one time.

25. Types of Internet Connection • Narrowband • Dial-up • ISDN • Broadband • DSL • Cable • Dedicated Leased Line (such as T1) • Wireless (Wi-Fi) Living Online Back

26. Dial-up • The most common type of connection for home users. • Considered the slowest but have the reputation of being the most inexpensive. • Connection rates for dial-up modems tend to fall at around 56 kbps. • You cannot use the telephone for the Internet and phone calls for the same time. Living Online Back

27. Integrated Services Digital Network • ISDN is a type of digital telephone connection that offers data transfer rates of up to 128 kbps. • This can be a better than dial-up, however ISDN connections are considered still more or less outdated. Living Online Back

28. Digital Subscriber Line (DSL) • Becoming widely available and can provide an excellent connection. • Allows you to use the phone normally while connected to the Internet. • DSL connections can be costlier than dial-up. • DSL operates starting at 512 Kbps Living Online Back

29. Cable • Offers very fast and reliable connections with a fixed monthly fee. • It will not affect how you use your telephone. • Offers data transfer rates of approximately 1 mbps to 6 mbps. • Cable connections are not always available in all areas. Living Online Back

30. Dedicated Leased Line • Directly connects your computer to your ISP’s network. Capable of transferring data at 1, 544, 000 bits-per-second, such as T1. • Upload and download speeds are the same (symmetric) • Much more expensive than cable or DSL connections. Living Online Back

31. Wireless (Wi-Fi) • No cords or wires for as long as you are in a WiFi “hotzone”. • Wireless broadband connections: Wi-Fi, Satellite broadband, Wireless DSL, and Wireless Digital Cable. • Connection speeds ranging from as little as 256 Kbps to as much as 10+ Mbps. • You have to stay within a certain radius to connect to a WiFi device. Living Online Back