A practical/skills-based subtopic — you're expected to already be competent at using these tools; exam questions test whether you understand the underlying etiquette and best practice.
Email:
Responsible use of the Internet, especially social media: think before posting, respect others' privacy, be aware that content posted online can be permanent and public even if 'deleted'.
💡 Exam Tip
Netiquette questions often ask you to identify what's wrong with a described email (e.g. huge attachment, forwarding an obvious hoax) — practise spotting the specific violation, not just saying 'be polite'.