Blog
Field notes on CompTIA prep, study strategy, and what we are learning as the first cohorts come through. No daily posts, no hot takes for the sake of it. We post when there is something useful to say.
Wireless networking: what Net+ tests vs marketing buzzwords
Wi-Fi 6, Wi-Fi 6E, and Wi-Fi 7 explained for Network Plus. What the 802.11 standards actually deliver, 2.4 vs 5 vs 6 GHz tradeoffs, and the security pieces N10-009 tests.
Mobile device hardware: what CompTIA A+ Core 1 actually tests
Battery chemistry, screen tech, connectors, replacement workflows, and the gotchas that show up on Core 1 objectives 1.1 through 1.4.
MFA factor combinations: why 'two passwords' isn't MFA
Multi-factor authentication means two or more factors from different categories. Two passwords is single-factor twice. Here is what counts and why Security+ tests it.
Subnetting made simple: stop memorizing /27 equals 30 hosts
The block-counting method, the 2^n minus 2 rule, CIDR shorthand, and worked examples that survive exam pressure. Network Plus subnetting without the rote tables.
RAM compatibility 101: SODIMM vs DIMM, DDR4 vs DDR5 on A+
Form factors, dual-channel rules, ECC vs non-ECC, mixing speeds, and the motherboard QVL gotchas that decide whether the upgrade actually boots.
The CIA triad: why every security decision comes back to 3 letters
Confidentiality, Integrity, Availability. The foundation of Security+. What each leg protects, real breach examples, and how SY0-701 tests it.
What CompTIA A+ actually costs in 2026
About $548 in exam fees for two exams, and realistically $700 to $1,200 all-in with materials and one retake. Plus at least 120 hours of study. The honest breakdown.
What CompTIA Network+ actually costs in 2026
About $369 for the single N10-009 exam, and $500 to $900 all-in with materials and a possible retake. Plan for 60 to 90 hours of study. The honest breakdown.
What CompTIA Security+ actually costs in 2026
The priciest core cert: about $439 for the SY0-701 exam, and $600 to $1,000 all-in with materials and a retake. Plan for 80 to 120 hours of study.
The OSI model without the jargon: a layer-by-layer walkthrough
Seven layers, plain English, real packet flow. What lives where, what breaks where, and how to answer N10-009 OSI questions without memorizing the mnemonic.
The 7-step troubleshooting methodology every A+ tech memorizes
The CompTIA A+ troubleshooting methodology in plain English. Seven steps, one real ticket per step, and why interviewers and help desks still build around it.
Revy's Tech Journey is live: real hands-on tickets for CompTIA Net+
Thirteen Net+ Sim tickets are now real hands-on work across eight network consoles. Real switch config, packet captures, terminal sessions, and per-checkpoint grading.
Zero Trust demystified: what SY0-701 actually tests
Control plane vs data plane, PEP/PDP/PIP/PAP roles, implicit trust zones, and adaptive identity. The plain-English version of the Security+ Zero Trust objective.
CompTIA Security+ just joined the trinity on Revy's Tech Journey
Security+ (SY0-701) is live. 28 lessons, 500 Q-bank items, 1,141 Adventure scenes, 18 SOC sim tickets, 25 PBQs, 800 flashcards. The third cert in the trinity.
DDR3 vs DDR4 vs DDR5 on A+: learn the pattern, not the trivia
How to read DDR generations on the A+ Core 1 exam without memorizing speed tables. The pattern stays the same. The numbers do not.
How to read a CompTIA A+ practice score honestly
What an RTJ practice result and Mastery Index can show, why evidence quality matters, and what neither can predict.
- July 27, 2026Sec+The 7 NIST incident response phases, in plain English
- July 27, 2026A+Printer troubleshooting: the A+ domain most techs underestimate