Start here. Every exam objective, taught from the beginning in plain language.
Free video courses for every exam, plus a short video for each exam objective.
Each cert builds on the last. Check items off as you go; they save on this device. Earn XP in every tab to climb 12 levels from Help Desk Trainee to Senior Network Engineer.
New content is added every month.
Shorter tickets from the original queue. Work each ticket the way you would at a real help desk or NOC. Wrong moves cost XP, and harder tickets unlock as you level up.
Practice Packet Tracer commands and Wireshark analysis right here, then repeat each lab for real in the actual tools.
Head-to-head quiz battles: 10 questions, 15 seconds each. Faster correct answers score more (100–150 points). Every answer also counts toward Smart review.
Rating moves only in live battles (everyone starts at 1000). XP, streak and mastery update as you study.
After you pick an answer, rate how sure you are. Lucky guesses and confident misses come back sooner, like CertMaster.
Timed like the real test, with questions weighted by the official domain percentages. No feedback until you submit. You get a scaled score, a pass line and a domain breakdown.
Subnetting is the most-failed skill on Network+ and CCNA. Do five a day until each takes under a minute.
Put each protocol, device, PDU or function on its layer. Network+ 1.1 · CCNA 1.1
Work out usable capacity and how many drive failures the array is guaranteed to survive. A+ 220-1201 3.3 · 5.2
| Level | Min drives | Usable | Survives |
|---|---|---|---|
| 0 | 2 | n × size | 0 |
| 1 | 2 | 1 × size | n − 1 |
| 5 | 3 | (n − 1) × size | 1 |
| 6 | 4 | (n − 2) × size | 2 |
| 10 | 4 | n ÷ 2 × size | 1 guaranteed |
Build each one in Packet Tracer or on real gear. End every lab with screenshots, the verification commands you ran, and a short ticket-style write-up. Those become your portfolio. +40 XP each.
Work through these in order from 101 Labs: CompTIA Network+. Most run in Packet Tracer, Wireshark or a Linux VM. The book targets N10-008, but nearly every lab still applies. +20 XP each.
Six levels from Help Desk to Network Engineer. Answer out loud first, then reveal the coaching notes and rate yourself. Mock interview picks five, weakest first, with a 2-minute timer. +10 XP the first time each is practiced.
A question counts as mastered once answered right. A card counts once marked "Got it".