Library › Study AI › High school students

Explain how internet packets travel using a postcard analogy

Practice: Saying who it's for. About 5 minutes.

About this exercise

Your AP Computer Science Principles exam has a written question on how data travels across the internet. Get exactly 3 numbered sentences using only Mr. Tsai's postcard analogy (splitting a message into packets, packets taking different routes, putting them back in order), then one line starting 'Check:' with a question to test yourself, under 75 words, plain text. No code and none of the terms TCP/IP, router table or checksum.

Common mistakes when you ask AI for this

  • Asking the general question. The AI explains with technical terms like TCP/IP, which your teacher said earns zero without explanation. Try: Say: "Use only the postcard analogy from my notes."
  • Not saying how many sentences. The AI picks its own number, and it usually picks more sentences than you need. Try: Be exact: "Exactly 3 numbered sentences."
  • Not banning jargon. AI defaults to networking acronyms. Try: Add: "No TCP/IP, router table, checksum or latency."
  • No way to test yourself. The AI explains and stops, so you never check whether it stuck. Try: Add: "End with one line starting 'Check:' with a question, no answer."
  • Trusting the AI to count words. AI is bad at counting. Ask for a total and it often lands 20% over. Try: Cap each sentence: "each under 18 words."
  • Forgetting where it will be read. AI formats for a screen, with bold and headings that show up as stray symbols on the exam. Try: Say: "Plain text, no bold, no headings."

What a strong prompt includes

  • Names the analogy
  • Says how many sentences
  • Bans jargon
  • Asks for a check question
  • Sets a length limit

Practice this now ↑

Related exercises