Part 1 · Week 2

Subnetting Bootcamp

What you must be able to do by the end of this week is listed below. Complete lessons, labs, interactive tools, and the assessment checkpoint.

Week objectives

  • Convert CIDR to subnet mask
  • Find network/broadcast/usable range
  • Calculate hosts
  • Understand wildcard masks
  • Begin VLSM

Lessons

Training videos

Jeremy's IT Lab lectures (also embedded in lessons) plus supplemental videos from the Free CCNA 200-301 course playlist. Watch in order or jump to the topic you are studying.

Jeremy's IT Lab

Subnetting Mastery Part 1 — Seven Attributes

Watch on YouTube

Watch on YouTube
Jeremy's IT Lab

Subnetting Part 1 (Day 13)

Watch on YouTube

Watch on YouTube
David Bombal

Binary — How Does That Work? (Video #13)

Watch on YouTube

Watch on YouTube
David Bombal

Binary IP Conversions (Video #14)

Watch on YouTube

Watch on YouTube
David Bombal

Hexadecimal to Decimal Made Easy! (Video #16)

Watch on YouTube

Watch on YouTube
Jeremy's IT Lab

Subnetting Mastery Part 3 — 60-Second Method

Watch on YouTube

Watch on YouTube

Lesson pages embed Jeremy's IT Lab videos inline. Supplemental David Bombal videos from the linked playlist appear here and in matching lessons — all credited to their respective channels.

Interactive tools

Labs & review

Labs

Lab content coming in Phase 2/3

Assessment

week2-subnetting-gate — original concept-based questions only.

Subnetting Gate 1

Score 80%+ on 25 questions and complete 10 timed CIDR drills.