IEO Level 2- English Olympiad (SOF) Class 9 Coaching Programs
⏳ 🎯 Online Tests (2 Tests [50 Questions Each]): NTA Pattern, Analytics & Explanations
Click Here to View & Get Complete Material
Rs. 200.00
3 Year Validity (Multiple Devices)
🎓 Study Material (303 Notes): 2024-2025 Syllabus
Click Here to View & Get Complete Material
Rs. 450.00
3 Year Validity (Multiple Devices)
🎯 250 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)
Click Here to View & Get Complete Material
Rs. 200.00
3 Year Validity (Multiple Devices)
Computer Science: Fundamentals of Internet and Java Programming: Gateway Access and Dial-Up Connection
Gateway Access
- Gateway Access is also known as Level-One connection.
- The gateway allows the two different types of networks to “talk” to each other.
- The local Internet Service Provider (ISP) normally defines this limitation.
- Good example of network with Level One Connectivity within India is that of VSNL (Videsh Sanchar Nigam Limited) .
Dial-Up Connection
- ‘Dial-up’ connection is also known as Level Two connection. This provides connection to Internet through a dial-up terminal connection.
- The computer, which provides Internet access, is known as ‘Host’ and the computer that receives the access, is ‘Client’ or ‘Terminal’ .
- In dial-up connection to Internet, Host carries all the command that are types on a client machine and forwards them to Internet.
- It also receives the data or information from the Internet on behalf of the ‘Client’ and passes it to them.
- The client computer acted as a ‘dumb’ terminal connected to remote host.
- This type of connection can further be divided into two categories.
Shell Connection
- In this type of Internet connection, the user will get only textual matter of a Web Page.
- This connection does not support Graphics display. However, the user will be able to surf the Internet, do FTP, receive mail.
TCP/IP Connection
- Today՚s graphical World Wide Web browser provides easier access with multimedia sound and pictures. The major difference between Shell and TCP/IP account is that shell can only display text and does not support graphics display, whereas TCP/IP can display both.
- Hence TCP/IP is more popular Internet connection. Shell accounts are slowly phasing out from the Internet scenario.
- To access any of these dial-up accounts you need the followings.
- Computer
- Modem
- Telephone Connection
- Shell or TCP/IP account from the ISP
- Internet client software such as Internet browser
Leased Connection
- Leased connection is also known as direct Internet access or Level Three connection. It is the secured, dedicated and most expensive, level of Internet connection.
- Leased Internet connections are limited to large corporations and universities who could afford the cost.