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# WAAccessCategory.bestEffort

A default quality-of-service (QoS) type that provides high throughput for data transfers of any size.

```
case bestEffort
```

## Discussion

This Wi-Fi access category is the default for packets transmitted by a `NetworkConnection`, as well as if you set `serviceClass = .bestEffort` with <doc://com.apple.documentation/documentation/Network/NWParameters>. Use this category for bulk transfers that are visible to a person using your app.

For more information, refer to [NWParameters.ServiceClass.bestEffort](https://developer.apple.com/documentation/network/nwparameters/serviceclass-swift.enum/besteffort)

---

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