CompTIA Security+ Cheat Sheet: One-Page Reference for the Final Week

Security+ is broad, vendor-neutral, and tied to real exam constraints. The current CompTIA exam is SY0-701. It costs $425, allows maximum of 90 questions in 90 minutes, and requires 750 on a scale of 100-900 to pass.

One-page Security+ reference for the final week

Exam constants: SY0-701 | $425 voucher | Max 90 questions | 90 minutes | 750 passing score | PBQs near the start

Domain weights: Security Operations 28% | Threats, Vulnerabilities, Mitigations 22% | Security Program Management 20% | Security Architecture 18% | General Security Concepts 12%

Key ports: SSH 22 | SMTP 25 | DNS 53 | HTTP 80 | HTTPS 443 | LDAP 389 | LDAPS 636 | SMB 445 | RDP 3389 | Syslog 514 | NTP 123

Cryptography: AES (symmetric, bulk encryption) | RSA/ECC (asymmetric, key exchange and signatures) | SHA-256/SHA-3 (hashing, integrity) | ECDHE (forward secrecy)

PKI chain: CSR → CA validation → Certificate issued → Presented to client → Chain validated → Hostname checked → Revocation checked (CRL or OCSP)

Incident response phases: Preparation → Identification → Containment → Eradication → Recovery → Lessons Learned

Social engineering: Phishing (email) | Vishing (voice) | Smishing (SMS) | Whaling (exec-targeted) | Pretexting (fabricated scenario) | Tailgating (physical)

Subnetting: /24 = 254 usable hosts | /25 = 126 | /26 = 62 | /27 = 30 | /28 = 14

What should you do with this information next?

Our CompTIA Security+ study guide covers all five SY0-701 domains with a complete ports and protocols cheat sheet. Available at securitypluscertprep.com/guide.

SimpuTech's Security+ AI tutor can build a personalized study plan. Try it at SimpuTech.com.