CKA — Exam Tips & Strategies

The 3-Pass Strategy

Time management is critical in the CKA exam. Use this three-pass approach:

Pass 1 — Quick Wins (First 40 Minutes)

• Scan all questions and identify easy ones (simple resource creation, commands you know)
• Complete every question you can solve in under 3 minutes
• Skip anything that requires significant troubleshooting or lengthy YAML
• Target: Complete 8–10 quick questions

Pass 2 — Medium Tasks (Next 50 Minutes)

• Return to medium-difficulty questions (multi-step tasks, moderate YAML)
• Allocate 5–7 minutes per task
• If you get stuck after 5 minutes, flag it and move on
• Target: Complete 5–7 medium questions

Pass 3 — Hard Tasks (Final 30 Minutes)

• Tackle remaining hard questions (complex troubleshooting, multi-component tasks)
• Even partial answers earn partial credit — always attempt something
• Use the last 5 minutes to review flagged questions
• Target: Attempt all remaining questions

vi/vim Editor Shortcuts

You will use vi or vim to edit YAML files during the exam. Master these shortcuts:

Shortcut	Action
i	Enter insert mode
Esc	Exit insert mode
:wq	Save and quit
:q!	Quit without saving
dd	Delete current line
5dd	Delete 5 lines
yy	Copy (yank) current line
p	Paste below
u	Undo
Ctrl + r	Redo
/search	Search forward
n	Next search result
:set number	Show line numbers
:set paste	Enable paste mode (preserves indentation)
gg	Go to first line
G	Go to last line
:%d	Delete all lines

Exam tip: Before pasting YAML into vim, always run :set paste first. This prevents auto-indentation from breaking your YAML structure.

YAML Best Practices

Indentation Matters

YAML uses spaces, not tabs. In vim, set up:

# Add to your .vimrc or run in vim command mode
:set expandtab
:set tabstop=2
:set shiftwidth=2

Generate, Don’t Write From Scratch

# Generate YAML scaffolds with dry-run
kubectl run nginx --image=nginx --dry-run=client -o yaml > pod.yaml

# Edit only what you need
vim pod.yaml

Common YAML Mistakes

Mistake	Fix
Tabs instead of spaces	Use :set expandtab in vim
Wrong indentation level	Check parent-child alignment
Missing - for list items	Lists of containers, volumes, ports need - prefix
Wrong apiVersion	Check the docs: kubectl api-resources
Typo in key names	Use tab-completion or copy from docs

Common Exam Traps

1. Wrong Cluster Context

Every question specifies a context. If you forget to switch, you create resources on the wrong cluster and lose marks.

Fix: Always run kubectl config use-context <name> as your first command for every question.

2. Wrong Namespace

Some questions specify a namespace. If you create resources in the default namespace, you lose marks.

Fix: Read the question carefully. Set the namespace: kubectl config set-context --current --namespace=<ns>

3. Not Verifying Your Work

Creating a resource does not mean it is correct. Verify before moving on.

Fix: Always verify: kubectl get, kubectl describe, kubectl logs

4. Spending Too Long on One Question

Getting stuck on a 3-point question for 15 minutes means you lose time for easier questions.

Fix: Use the 3-pass strategy. Skip and return.

5. Forgetting etcd Certificate Flags

The etcdctl backup command requires --cacert, --cert, --key, and --endpoints. Missing any one fails the backup.

Fix: Practice the full command until you can type it from memory.

Exam Day Checklist

1 Hour Before

• Close all unnecessary applications
• Clear your desk
• Test webcam and microphone
• Have government ID ready
• Get water (if allowed in your testing area)
• Use the restroom

First 2 Minutes of Exam

• Set up aliases: alias k=kubectl
• Set up exports: export do="--dry-run=client -o yaml"
• Set up tab-completion: complete -o default -F __start_kubectl k
• Verify vim settings: :set expandtab tabstop=2 shiftwidth=2

During the Exam

• Switch context for every question
• Read the full question before starting
• Verify your work after each task
• Flag hard questions and come back
• Use imperative commands for speed
• Copy YAML snippets from kubernetes.io/docs

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