A set of 7 A3 posters, each with a brief description of a protocol required for OCR J277 Computer Science specification. These posters were designed to be easy to read from across the classroom and therefore contain short, to the point descriptions. Protocols covered are: TCP/IP, HTTP, HTTPS, FTP, POP, IMAP and SMTP. These posters will look fantastic laminated and are guaranteed to liven up any classroom.