Internet Connection Basics

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11. ISDN stands for Integrated Services Digital Network. It establishes the connection using the phone lines which carry digital signals instead of analog signals.


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12. In Shell Connection, the user will get only textual matter of a Web Page as it does not support Graphics display or multimedia files.


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13. DSL stands for Digital Subscriber Line. It is a form of broadband connection as it provides connection over ordinary telephone lines.


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14. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between analog and digital forms.


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15. Bandwidth Shaping refers to a tool used by ISPs to limit or direct bandwidth consumption by users. Bandwidth shaping is also called bandwidth allocation or referred to as a bandwidth management tool.


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16. The amount of time a user is logged in to a remote computer is called as connect time. This becomes important in as many online services charge users per connect time.


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17. A walled garden refers to a browsing environment that controls the information and Web sites the user is able to access. ISPs use this method in order to keep the user navigating only specific areas of the Web.


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18. Channel bonding refers to the technology that combines two telephone lines into a single channel, effectively doubling the data transfer speeds. For example, bonding two modems of 56Kbps together would give you a 112 Kbps Internet connection.


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19. A computer must have a network card installed to be able to plug a network cable coming from the modem, router or gateway.


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20. A switch learns about MAC address connected to each port and will only send data on that port that is addressed to those MAC addresses.


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21. Internet is a global network of computers each computer connected to the Internet must have a unique address. This address is known as an IP address.


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22. It is faster than dial-up but slower than DSL. It can be used anywhere around the world and gets affected by rain and snow.


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23. A Digital Subscriber Line is always on and is faster than Dial-up. In DSL, Internet and phone can be used in the same time.


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24. A gateway is a multi-use device that includes a modem and a router, all in one. It allows data to flow from one discrete network to another.


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25. IoS stands for Internet over Satellite. It allows the user to access the Internet via a satellite that orbits the earth.


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26. It is important to have a web browser installed on the computer to access the internet. This is a software program that allows viewing of web pages and navigating the Internet.


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27. ISP stands for Internet Service Providers. Internet Service Providers are companies that connect the common public to the Internet services.


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28. A router is a computer networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet.


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29. Dial-up internet connection is the cheapest method to connect to the Internet. But it is a very slow connection and the quality is also not very good. The Internet speeds range from 2400 bps to 56 Kbps.


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30. DSL stands for digital subscriber line. It is a type of internet connection which is always connected to the Internet. So, in this case, we don't have to dialup to connect.


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