# Quiz: Choose and change models without losing the job

## Student quiz

### 1. Two models receive the same invoice files, company policy, prompt and comparable settings. What provides the strongest basis for choosing between them for this job?

A. Which model has the most impressive name
B. Which model produces the longest answer
C. Which model meets the invoice checks with less waiting, correction or reported usage
D. Which model has the highest score on any published benchmark

**Correct answer: C.** The controlled comparison tests the actual job and includes the work required from the user. A and B do not measure suitability. D can help choose candidates, but a benchmark may test different work and does not replace the invoice checks.

### 2. Daniel switches models inside the same application. Which statement is safest?

A. The application may continue supplying its saved files, preferences and connections, but Daniel should test the job again.
B. The new model automatically has every preference and connection from every other application.
C. The invoice files become part of the new model's training.
D. The new model must produce the same decisions because the files did not change.

**Correct answer: A.** The application manages the saved setup and can supply it to another model, but the new model may produce a different result. B confuses one application's setup with another's. C confuses supplied context with training. D assumes identical output without running the check.

### 3. A monthly app subscription includes usage limits, while a website lists the model's public API price per million tokens. How should a learner record the cost of a comparison made inside the subscription?

A. Treat the public API rate as the exact subscription charge.
B. Record the subscription's own usage information and avoid inventing a dollar charge without a pricing basis.
C. Ignore usage because a subscription has no limits.
D. Multiply answer length by the monthly subscription price.

**Correct answer: B.** Subscription pricing and API billing are different arrangements. A and D create unsupported charges. C ignores the limits or usage information the account may report.