Lesson 6: PKI and Certificate Management
Week of Tue, Oct 20 · lesson closes Mon, Oct 26
Take Meerk's quiz for Lesson 6
This lesson's items
Exact due times are in Canvas.
Watch — Professor Messer
Watch — Professor Messer: PKI (SY0-701)
Free, independent educational resource. Not affiliated with or endorsed by CompTIA. Watch, then read the notes below.
Know these cold
- PKI (Public Key Infrastructure): CA hierarchy (root CA → intermediate CA → end-entity certificate). Certificate contains: public key, subject, issuer, validity, serial, signature.
- Certificate lifecycle: request (CSR) → issuance → use → revocation (CRL or OCSP) → expiry.
- Digital signatures: sender encrypts hash with private key; recipient decrypts with sender's public key to verify authenticity and integrity.
Meerk's quiz — open the Lesson 6 gate
10 questions, no time limit. 85% on your first attempt in a 24-hour window opens the gate. Retakes inside the window are practice — they help you learn, they don't count. Work alone; the point is to know it, not to have seen it.
Dinner Table Question
Ask at home: If your browser already trusts a certificate, does that mean the website is safe?
En español: Si tu navegador ya confía en un certificado, ¿eso significa que el sitio web es seguro?