Internet Service Providers and types of internet connections

Internet Service Providers and types of internet connections 1

How to acquire Connection? We are Basically connected with internet by n � Internet Service Provider (ISP) / Internet Access Provider (IAP) n � Wireless Service Provider (WSP) 2

Internet Service Providers An internet service provider is an organization that provides service for accessing, using, or participating in the internet. 3

Introduction n Before you complete the design of web site, you need to find a way to put it on the Internet. n Internet Service Provider n A specialized company that connects customers with PCs and browsers to the Internet 4

HOW ISPs WORK n n ISPs are cheaper, more reliable. To access web site, it has to be stored on a web server that is always connected to the Internet by a high-speed. 5

Wireless Service Provider (WSP) �A company that provides wireless Internet n access to the users with wireless modems. n � Notebooks/laptops and Cellular phones are n example of wireless devices accessing the n internet. n 6

What services? Connection to The Internet n Email accounts (how many) n Web Space (how much) n Technical Help(free? ) n Fixed / varied IP Address n Other Items n 7

Internet service provider n Internet Service Provider n n n Specialized company that connects customers with PCs and browser to the internet Allow user to access the Internet via modem using a voice telephone network or directly via cables. Provides an interface between the public phone system and Internet digital phone lines, which carry packets instead of voice conversation 8

ISP Services n An ISP is expecting to provide the following n WWW server n n FTP n n Can be run on the same hardware as DNS, e-mail. Accept connection form client trying to connect to its server Internet relay chat (IRC) n Text-based chat service, where users connect to local server as part of a larger network of IRC servers 9

ISP Services n An ISP is expecting to provide the following n News server n n Internet network news is becoming more popular, because there is so much data traffic for news HTTP proxy service n n n Generates and manages a local store of Internet objects such as web pages, images, or FTP and deliver the objects when requested (caching) When a web page is requested, the proxy server examines its internal database to see if the page is store in the cache Minimize data traffic, speed up request 10

Factors in choosing an ISP 1. 2. 3. 4. 5. 6. 7. 8. 9. Bandwidth Connection availability Customer volume and traffic Traffic volume during peak hours Virtual hosting feature Capacity of e-mail box Stability and staying power Customer service and local support Price 11

HOW A MESSAGE IS BEING SENT? IP=231. 154. 12 IP=112. 134. 51 Sending PC Packets Router Packets Receiving PC To: 231. 154. 12 From: 112. 134. 51 Figure: TCP/IP and Message Transmission 12

Internet Connections Most people are familiar with the use of modems and telephone lines to access the Internet, but there are now many other options available, each with their own advantages and drawbacks 13

TYPE OF INTERNET CONNECTIONS Dialup n Analog modems n – Cable Connection n – DSL Broadband n – ISDN n – Wireless Connection n 14

Dial up connection 15

Dial up connection Dial-up connections are the most common type n of Internet Connection for home users. n � Dial-up connections today are considered the n slowest but the reputation of being most n inexpensive. Connection rates for dial-up n modems tend to fall between 24 kbps to 56 n 16

Analog modems Advantages Low cost · Availability: able to get internet service almost anywhere in the country · Simplicity Disadvantages Slowest type of connection Available Unable to talk on the telephone when using internet 17

Cable Connection 18

Cable Connection Cable connection offers very fast and reliable n connections with fixed monthly fee. Because n cable connections use a different medium to n connect you to the Internet, it will not affect n how you use your telephone. n � Cable broadband Internet connections n 19

DSL connection 20

DSL connection Digital Subscriber Line or DSL connections n are becoming widely available and can provide n you with an excellent Internet connection. n � DSL allows you to use the phone normally n while connected to the internet. The n disadvantage of DSL connections can be n costlier than dialup. DSL operates at 512 n 21

ISDN 22

ISDN Connection are a type of telephone n connection that offer data transfer rates of up n to 128 kbps. This can be better than dialup, n however ISDN connections are considered still n more or less outdated. n 23

THANK YOU 24