# Assessment 2

#### After executing OP\_SIZE on a 10-byte data item, how many items are on the stack?

* [ ] 1 (the size measurement)
* [ ] 1 (the original data)
* [x] 2 (original data + size)
* [ ] 0 (both removed)

\
**Notes to Learners**

OP\_SIZE is **non-destructive**—it measures the top item and pushes the result without removing the original data. You end up with both the data and its size.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://hub.bsvblockchain.org/higher-learning/bsv-academy/bsv-opcodes/stack-data-queries/assessment-2.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.