# 3 questions very simple

**URL:** <https://forum.availproject.org/t/3-questions-very-simple/1104>\
**Category:** General\
**Created:** [February 22, 2024, 10:21pm UTC](https://forum.availproject.org/t/3-questions-very-simple/1104 "2024-02-22T22:21:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tom](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.availproject.org/tom/32/644_2.png) [@tom](https://forum.availproject.org/u/tom)\
**Post date:** [February 22, 2024, 10:21pm UTC](https://forum.availproject.org/t/3-questions-very-simple/1104/1 "2024-02-22T22:21:44Z")

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1. ➮ Avail use the NPoS consensus ?  
➮ Avail has 2 methods for data availability? On-chain data availability and off-chain data availability?  
➮ Does Avail have an execution layer and an integrated Dispute Resolution (DR) layer? If Avail doesn’t have it, does it delegate the work to Layer 2 solutions like Arbitrum, for example?

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**Author:** ![AstroNodes](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.availproject.org/astronodes/32/367_2.png) [@AstroNodes](https://forum.availproject.org/u/AstroNodes)\
**Post date:** [February 23, 2024, 1:30pm UTC](https://forum.availproject.org/t/3-questions-very-simple/1104/2 "2024-02-23T13:30:20Z")

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The answer to all your questions is yes. You can check this if you want to learn more details.

> **[What is Avail? - Avail Developer Docs](https://docs.availproject.org/docs/introduction#verificationdispute-resolution-layer-dr-layer)**
>
> Learn about Avail's data availability chain