Internet Connections 

Nowadays usage of  internet is increasing widely. We can do surfing, book tickets online, shop online,  search anything on various search engines like Google, Yahoo & Bing. Internet access is the process by which various terminals, computers etc are connected to global network. Internet access are available at homes, schools, libraries and cyber cafes, etc. Wireless connections are mostly preffered in shopping malls and  coffee shops. These wireless connection can be accessed from anywhere. Local Area Network i.e. LAN provides internet access to computers in a specific areas like homes, schools and offices. Various technologies of LAN are: Ethernet & Wi-Fi. Broadband provides high data rate access to internet.

There are various types of internet connections:

• ISDN: ISDN i.e. Integrated services digital network is one of the oldest method of internet connections. It is used for voice, video-conferencing and broadband applications.
• DSL: DSL i.e. Digital subscriber line .This provides internet connection through computer network.
  ADSL:  Assymetric DSL is one of the types of DSL in North America. It supports different data rates for upstream(sending data) and downstream(receiving data) rates i.e. 16 to 640 Kbps and 1.5 to 9 Mbps respectively.
  SDSL:  Symmetric DSL is also the type of DSL and is mostly common in Europe. It uses the special type of modem. It uses the same data rates for both upstream and downstream rates i.e. upto 3 Mbps.
• Wi-Fi: These are build by using one or more wireless routers. Wi-Fi can be used to create campus-wide or city-wide wireless networks. 
• Cable: With the help of cable modem we can have broadband internet connection and is designed to operate on cable TV lines. Its data rate ranges from 512 kbps to 20 Mbps.

Internet Connection Speedometer:

This device is used to tell how fast or slow is our internet connection. Whatever be the internet connection like ISDN, DSL, Wi-Fi or cable we can use speedometer that will tell us the speed of the internet connection.