# CKS-015 — Verify a standard checksum file

Domain: **1.5 Platform binary verification**  
Time: **30 seconds** · Reward: **100 XP + topic mastery**

## Task

Directory `/opt/release` contains:

```text
kube-scheduler
kube-scheduler.sha256
```

Unlike earlier tasks, the checksum file already contains both the hash and filename in standard `sha256sum` format. Write the command or commands to verify it.

## Section B — scored answer

```bash
sha256sum --check kube-scheduler.sha256
```

Say **Grade CKS-015** when saved.