Protocols are a set of rules that govern how data is transmitted across networks.
Identify one network protocol that is used to perform each of the following tasks:
Send email messages from a client application to a mail server, or between mail servers.
Retrieve and transmit web pages securely over the internet by encrypting the session.
54 exam-style questions on OCR GCSE Computer Science Wired and wireless networks, protocols and layers. Each one has a worked solution and a mark scheme showing where the marks go.