WJEC Eduqas A Level Computer Science (A500QS)Specification point 2.2

Eduqas A500QS 2.2: Data transmission

The free BugBot lessons that teach this point, a robot to try it on, and the past-paper questions that test it.

Lessons that teach it

1. A12.1 Communication methods Networks and the web
   Serial and parallel, synchronous and asynchronous, baud rate, bit rate, bandwidth, latency and protocols.
2. A12.3 How the Internet works Networks and the web
   Packet switching, routers and gateways, URLs, fully qualified domain names and DNS.
3. A12.4 The TCP/IP stack and protocols Networks and the web
   The four layers, encapsulation, ports and sockets, and HTTP, HTTPS, FTP, SMTP, POP3 and SSH.
4. A12.10 Project: a reliable link Networks and the web
   Receive a route as packets out of order, reject the damaged one, and drive it.

Try it on a robot

The task from A12.1 Communication methods, running here. Change the program and press Run.

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