Class 9 Computer — Internet and Email Important Questions with Answers (Long answers)

Email needs a correct To address, a subject, a clear body and careful attachments. CC shows copies; BCC hides receivers. The web uses browsers, URLs and HTTP/HTTPS. Search engines help but results must be judged. Spam and phishing hide in both mail and web. Netiquette: no caps-shouting, no rumour forwards. WWW is not the whole internet. Practical: save school work offline too, because the link can fail.

The browser reads the protocol and domain. DNS finds an IP address. A request goes over the LAN/router/internet using TCP/IP. The web server returns a page over HTTP/HTTPS. The browser renders HTML and may store cookies. If HTTPS, data is encrypted on the way. Errors can be a wrong URL, no DNS, or no cable/Wi-Fi. This story is enough; no need for vendor packet captures.

To: main receivers who must act. CC: others who should know; addresses visible. BCC: hidden copies for privacy. Reply: only the sender. Reply All: sender plus all visible To/CC — use rarely. Wrong Reply All can leak a class list. Subject lines should change if the topic changes. These are email, not WhatsApp, rules.