The Life Starter
Sign up
Grade 5 · unit review

Review: Explain a Computing System as Connected Parts

A pretend request has 2 seconds of starting delay and transfers 18 MB at 3 MB/s. Estimate total wait and explain what an unexplained blank display can establish.

Download reviews and answer keys

Bring the unit skills together

Use these 4 new cases to check your reasoning. Choices are temporary and are not saved to an account, sent to staff or recorded as school grades. Download your current review choices before leaving or reloading.

Unit review questions
1. Stores a kept photo file. Which component matches the responsibility?
Need a hint?
  • Match the stated responsibility to the component that provides it in the model.
  • Saved storage and working memory are not interchangeable roles.
2. Ideal model: transfer 32 megabytes at a constant 8 megabytes per second. Required time?
Need a hint?
  • Divide the stated data amount by its constant rate using matching data units.
  • A larger rate means less time for the same amount, not a larger wait.
3. Model request: starting delay 5 seconds, followed by transfer lasting 4 seconds. Total wait?
Need a hint?
  • Add the starting delay to the stated transfer time to estimate total wait.
  • Do not report only transfer time when the model includes an additional delay.
4. Confirmed network link failure with local files working. Which component is confirmed failed in the supplied diagnosis?
Need a hint?
  • Use the stated diagnostic evidence to identify the confirmed component, keeping other causes unresolved when not tested.
  • A blank screen alone does not prove the processor is broken.

The download contains your current choices and any checked feedback. Keep the separate transfer-task work in your own document; downloading its instructions does not mark it complete.

Use the skills in a new task

A pretend request has 2 seconds of starting delay and transfers 18 MB at 3 MB/s. Estimate total wait and explain what an unexplained blank display can establish.

Work on paper or in your own document. Explain the choices you made.

  • Use the pretend details in the task and name the rule you followed.
  • Show the steps or point to the detail that helped you choose.
  • Say one mistake to avoid or one thing this example cannot tell us.
  • Check your answer against the task. Change a part if you can show why it needs fixing.
Compare with a model response

Transfer takes 18/3=6 seconds; total modeled wait is 2+6=8 seconds. A blank display alone leaves multiple causes possible. The estimate assumes a constant transfer rate with no additional overhead.

A different response can also meet the criteria. Compare the evidence and reasoning, rather than copying the wording.