Page 113 - Viva ICSE Computer Studies 5 : E-book

Internet Connection Features

Mobile Internet • The user can access the Internet using his/her smartphone which
has network subscribed by the ISP.
• It provides a high-speed wireless access to the Internet.

Hotspot • It provides wireless access to the Internet across short distances.
• It is based on the use of Wi-Fi technology and radio waves.
• These hotspots can be accessed at places like universities,
airports and hotels.

Web Browser
A web browser is a software used to access the Internet. Google Chrome, Microsoft
Internet Explorer, Mozilla Firefox and Netscape Navigator are some commonly used

web browsers.

Learn More

• The concept of the Internet was fi rst proposed by the Advanced Research Projects Agency (ARPA)
of the US government in 1969. In fact, the Internet began as a network called the ARPANET.
• A MODEM changes a computer’s digital signal into an analog signal and an analog signal into
a digital signal. Both the sending and receiving ends of a communication channel must have a
MODEM for data transmission to occur.
• Companies like MTNL, BSNL, Airtel, Tata and Reliance are ISPs.

Popular Services on the Internet

A user can avail various services on the Internet. Let’s discuss some popularly used
services.

Video Conferencing

Video conferencing has completely changed the atmosphere of a modern offi ce. With
video conferencing systems, the participants not only hear the voice but also see each
other. The communication takes place either in one-way or multi-way modes. In one-

way mode, one of the participants sends the information and others receive it. In multi-
way mode, two or more participants can send or receive the information simultaneously.

The process of video conferencing involves some basic steps, which are as follows.

• During video conferencing, a video camera installed at the sending device
continuously captures pictures of the person, which is then converted into
compressed digital video signals.

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