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0 of 4 objectives have lessons · 0 studied · 0 secure
Lessons for this topic haven’t been written yet. The objectives below show exactly what the syllabus expects, so you can plan with them in the meantime.
What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Understand why a protocol is essential for communication between computers.
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Understand how protocol implementation can be viewed as a stack, in which each layer has its own functionality.
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Understand the TCP / IP protocol suite.
Its four layers (Application, Transport, Internet, Link). The purpose and function of each layer. How the suite is applied when a message is sent from one host to another on the internet.
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Understand the protocols HTTP, FTP, POP3, IMAP, SMTP and BitTorrent, and their purposes.
The BitTorrent protocol provides peer-to-peer file sharing.
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