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certificates/ckad.md

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+## Certified Kubernetes Application Developer (CKAD)
+
+### Core Concepts
+
+### Pods
+
+<details>
+<summary>Deploy a pod called web-1985 using the nginx:alpine image</code></summary><br><b>
+
+`kubectl run web-1985 --image=nginx:alpine --restart=Never`
+</b></details>
+
+### Namespaces
+
+<details>
+<summary>List all namespaces</code></summary><br><b>
+
+kubectl get ns
+</b></details>
+
+<details>
+<summary>List all the pods in the namespace 'neverland'</code></summary><br><b>
+
+kubectl get ns -n neverland
+</b></details>
+
+<details>
+<summary>List all the pods in all the namespaces</code></summary><br><b>
+
+kubectl get po --all-namespaces
+</b></details>