KwickClips Networks and the Internet · 44 sec · free
How many layers does the TCP/IP model have?
Short answer. Four: application, transport, internet and link.
Which way does data move when you receive it?
Up the layers, in reverse order.
TCP/IP layers
| Layer | Example |
|---|---|
| Application | HTTP, SMTP |
| Transport | TCP, UDP |
| Internet | IP |
| Link | Wi-Fi |
Remember
| Send: down the layers |
| Receive: up the layers |
Your message passes through four layers. Can you name them? Here are the four. Application uses HTTP. Transport uses TCP. Internet uses IP. Link sends the signal. The rule is simple. Data goes down to send. It climbs up to receive.
This clip is from the full lesson: Network Protocols: TCP/IP, HTTP, HTTPS, FTP, SMTP, POP3, PPP, Telnet and VoIP — 9 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 10 Computer Applications (165), CBSE Class 12 Computer Science (083), CBSE Class 12 Computer Science (083), CBSE Class 12 Informatics Practices (065)
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