Complete the table by identifying the most appropriate application layer protocol for each of the network tasks described.
| Network Task | Protocol |
|---|---|
| Securely transmitting login credentials and billing details between a customer's web browser and an e-commerce checkout server | |
| An automated server script forwarding a system alert email to an outgoing corporate mail relay | |
| A network administrator transferring a directory of device configuration backup files from a local workstation to a central storage server | |
| An email client downloading new messages from a server to a local device and immediately deleting them from the server to free up space |
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.