Page 83 - Computing E-Book Grade 7

The City School 2021-2022

4G Network

4G is the fourth generation of broadband cellular network technology, succeeding 3G.

Potential and current applications include amended mobile web access, IP telephony,
gaming services, highdefinition mobile TV, video conferencing, and 3D television.

5G Network All About Cloud

5G is the fifth generation of mobile networks, a significant evolution of today’s

4G LTE networks. 5G has been designed to meet the very large growth in data
and connectivity of today’s modern society, The Internet of things with billions of

connected devices, and tomorrow’s innovations. 5G will initially operate in conjunction
with existing 4G networks before evolving to fully standalone networks in subsequent

releases and coverage expansions.

3.4. How Does the Internet Work

1. You either type an address (URL) into your

address Bar or click on a hyperlink.

2. Your browser sends a request to your ISP server
asking for the page. When the browser sends a
request to the ISP the following information is

transferred from user PC:

• Web Page Request
• User ID
• IP Address

3. The ISP server forwards the request to the country’s gateway. After receiving the

user request, the ISP transmits the following information to the country’s gateway:
• Web Page Request
• User ID

• IP Address

• ISP ID
4. The host server sends the requested page back to the country gateway and
similarly, the country gateway sends the page back to the concerned ISP server.

5. Your ISP sends the page to your browser and you see it displayed on your screen.

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