Study StrategyCompTIA Security+ Cheat Sheet: One-Page Reference for the Final Week
Use a focused Security+ final-week reference to review key distinctions, exam logistics, and the topics that still need active recall practice.
Updated October 2, 2026·6 min read
A final-week reference should be short enough to use repeatedly. Keep the concepts you confuse most often close at hand and test whether you can explain them without reading the answer.
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.