Locked In vs Network Labs & Subnet Prep

Locked In is a bite-sized study companion for the CompTIA A+ certification, covering both Core 1 (220-1201) and Core 2 (220-1202). It suits people who study in 10-minute windows on the train or at lunch: every lesson is short and ends with a quick check so you know what stuck. The app follows the current V15 exams (220-1201 and 220-1202), which CompTIA launched on March 25, 2025. CompTIA lists the retirement as usually three years after launch, estimated 2028. WHAT'S INSIDE • Both A+ exams covered: Core 1 (220-1201) and Core 2 (220-1202) • All 9 domains: Mobile Devices, Networking, Hardware, Virtualization & Cloud, Hardware/Network Troubleshooting, Operating Systems, Security, Software Troubleshooting, and Operational Procedures • Visual diagrams for the concepts that need one (OSI model, RAID levels, laser imaging process, hypervisor types, defense in depth, and more) • A quick check at the end of each of the 162 lessons • Practice bank of 145 multiple-choice questions, organized by domain and written separately from the lesson quick checks • 16 performance-based practice activities (PBQs): tap to categorize, order, and match • A 90-question mixed Core 1 + Core 2 timed practice mode with flag-for-review and a final review screen (a study tool, not a simulation of either separate exam) • Flashcard deck of 82 must-know terms with spaced repetition • Searchable glossary of 75 key terms and acronyms (45 free; the 30 that repeat a paid flashcard open with the unlock) • Progress tracking, streaks, bookmarks, and personal notes • Spaced review that brings back the questions and cards you keep missing WHAT'S FREE, WHAT'S PAID Free to download and study, with no account and no time limit: • 14 of the 162 lessons: the six lessons of Core 1 Domain 1's first topic, plus the first lesson of every domain • Quizzes of up to 10 questions per session, drawn from the whole 145-question bank • A 2-activity PBQ preview • The Core 1 Domain 1 flashcards • 45 of the 75 glossary terms • Progress tracking, streaks, bookmarks, and notes One non-consumable in-app purchase (Locked In! A+ Unlock, no subscription) adds: • The remaining 148 lessons, for all 162 across 56 topics and both cores • Quiz sessions of 15, 25 and 50 questions (25 and 50 mix all domains; no single domain holds that many) • All 16 performance-based practice activities • All 82 flashcards, plus the 30 glossary definitions that repeat a paid card • The full 90-question, 90-minute cross-core timed practice mode WHO IT'S FOR • Career changers entering IT support and help-desk roles • Students supplementing a course or boot camp • Professionals refreshing before a recertification window • Anyone who learns better in short, focused sessions than long lectures WHY LOCKED IN • Bundled lessons and practice work offline with no account, tracking or ads. App Store product loading, buying, and restoring need a network connection. • One-time unlock, no subscription • Written and supported by one independent developer PRIVACY Locked In stores your progress on-device. No analytics, no third-party SDKs, no data sold or shared. DISCLAIMER Not affiliated with, endorsed by, or sponsored by CompTIA. CompTIA® and A+® are registered trademarks of CompTIA, Inc.

Still working out every subnet by hand? Practice until the math feels automatic. Network Labs & Subnet Prep gives you a new subnetting question every time, with the steps written out after you answer. It also includes independently created practice questions and guided offline labs for CCNA 200-301 study. SUBNETTING DRILL • A new question every time, so you practice the method instead of memorizing answers • Core skills: network address, broadcast address, usable host range, usable host count, prefix to mask, and mask to prefix • Advanced: wildcard masks for ACLs and OSPF, same-subnet checks, sizing a subnet for a host count (VLSM), splitting a network into subnets, and route summarization • Answers come from the built-in subnet calculator, which is tested against an independent reference ALSO INCLUDED • Subnet calculator: network, broadcast, host range, mask, wildcard mask, and usable hosts for any IPv4 address and prefix length • Practice questions by exam topic, with an explanation for every choice • Quick 10 and a mini mock exam • Guided labs for CLI, routing decisions, VLANs, ACLs, NAT, STP, and packet flow • Progress by exam version, with readiness shown as a study indicator, not a pass guarantee • Study Mode: lock the apps you choose for a set time, free for everyone • No account, no ads, and no data sent to external servers FREE AND LIFETIME ACCESS Free: all six core drill types without limits, one question of each advanced drill type, 50 practice questions, 25 guided labs, Quick 10 and Mini Mock, explanations, progress tracking, and purchase restoration. Lifetime Access: unlimited advanced drills, the complete 100-question bank, and all 50 guided labs, so Quick 10 and Mini Mock draw from the full set. One purchase; no subscription. STUDY MODE Pick the apps that pull you away, set a time, and they stay closed until it is up, so you can stay with practice questions and labs. Study Mode is free for everyone, works only on your device, and can be stopped any time from the app. This is an independent study tool. It is not affiliated with, endorsed by, or sponsored by Cisco Systems, Inc. It contains independently created educational content, not actual exam questions or unauthorized exam dumps. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://common-legume-c99.notion.site/3a1fb55d2567815483fdc70eae63359b