# Assessment 5 #### What is the primary function of data storage overlays? (Select ALL that apply) * [x] To maintain files in a service layer while recording a digital fingerprint on the blockchain * [x] To allow for flexibility and scalability in data management * [ ] To store all data directly on the blockchain * [ ] To eliminate the need for cloud storage **Notes to Learners** Data storage overlays allow files to be maintained in a service layer, such as cloud storage, while the blockchain records a timestamped digital fingerprint of that data. --- # 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-network-topology/essentials-of-overlay-services/assessment-5.md?ask= ``` 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.