ReadySec vs Slash

Pass your certification exam — on the first try. Free practice questions and flashcards for every certification — no subscription required. When you're ready for the full question bank, start a 3-day free trial. Study with thousands of expert-written questions across 52 industry certifications from CompTIA, ISC2, AWS, Cisco, ISACA, EC-Council, Juniper, Microsoft, and Google Cloud. Track your readiness across every exam domain so you know exactly where you stand before test day. THREE WAYS TO STUDY - Practice Exams — Timed, randomized tests pulled fresh from the question bank. Never the same exam twice. - Flashcards — Mapped to real exam objectives. Tap to flip, swipe to rate your confidence. - Targeted Training — Zero in on your weakest domains. Study exactly what you need, nothing you don't. KNOW WHERE YOU STAND - Per-domain readiness scores show exactly where you're strong and where you need work - Track progress across every certification you're studying for - Study streaks and history keep you accountable BUILT FOR THE REAL EXAM - Every question aligned to official exam objectives and domain weights - Detailed explanations for every answer — learn why, not just what - Reviewed by subject-matter experts for accuracy and clarity FLEXIBLE PRICING - All study modes, readiness tracking, and analytics are available to every user — nothing is feature-gated - Free sample questions and flashcards for every certification — always available - Only need one cert? Buy it individually for a one-time price — lifetime access, no subscription - Want it all? Start a 3-day free trial of ReadySec Premium and unlock the complete question bank for every certification 52 CERTIFICATIONS COVERED CompTIA - A+ Core 1 - A+ Core 2 - CySA+ - Network+ - Security+ - SecurityX AWS - Advanced Networking – Specialty - Cloud Practitioner - CloudOps Engineer – Associate - Data Engineer – Associate - Developer – Associate - DevOps Engineer – Professional - Machine Learning Engineer – Associate - Security – Specialty - Solutions Architect – Associate - Solutions Architect – Professional ISC2 - CC - CCSP - CGRC - CISSP - SSCP Cisco - CCNA - CCNP Enterprise - CCNP Security - CyberOps Associate - DevNet Associate Microsoft - AZ-104 - AZ-305 - AZ-500 - AZ-900 - PL-300 Google Cloud - Associate Cloud Engineer (ACE) - Professional Cloud Architect (PCA) - Professional Cloud Developer (PCD) - Professional Cloud DevOps Engineer (PCDE) - Professional Cloud Network Engineer (PCNE) - Professional Cloud Security Engineer (PCSE) - Professional Data Engineer (PDE) ISACA - CCOA - CDPSE - CGEIT - CISA - CISM - CRISC EC-Council - CCISO - CEH - CHFI - CND - CPENT Juniper - JNCIA-Junos - JNCIS-ENT - JNCIS-SEC

An offline subnet calculator for CCNA, Network+, and anyone who works with IP networks day to day. This is the original Slash - the calculator I built for myself so I could check subnetting in seconds instead of doing the math by hand every time. Type it in or paste it from wherever you copied it; Slash works out the rest, all on-device. Features: - Type or paste a CIDR (192.168.1.0/24), a bare address, or a subnet mask - Slash fills in the rest - Network address, first and last host, broadcast, and where the next subnet starts - Paste straight from Cisco IOS, ifconfig, or ipconfig output and it pulls the address and mask out for you - Tap any value to copy it - "More details" opens the wildcard mask, usable host count, and a bit-by-bit binary view - Hand it just a mask and get the CIDR prefix, wildcard, and the hex netmask (the ifconfig / route-table style) - /31 point-to-point (RFC 3021) and /32 handled the way they actually behave - IPv6 when you need it, light or dark, Recents, optional haptics - Fully offline. No accounts, ads, tracking, or subscriptions. Free. - Shamelessly vibe coded using Fable 5; the subnet math lives in its own package and is hand-verified for accuracy About me: I'm a working network engineer and active CCNA, currently living in the beautifully warm state of Arizona. Questions, feedback, or a result you can't explain? Email me any time - I'm responsive, and my email actually works. Privacy: https://tylerdix.com/slash/#privacy Slash is an independent tool, not affiliated with, endorsed by, or sponsored by Cisco Systems, Inc. or CompTIA, Inc. CCNA and Network+ are trademarks of their respective owners.