• Config Labs
    • Config Lab CCNA Vol 1 Part 2
      • Vol1 Ch04 CLI
      • Vol1 Ch06 Switch Mgmt.
      • Vol1 Ch07 Switch Interfaces
    • Config Lab CCNA Vol 1 Part 3
      • Vol1 Ch08 VLANs
      • Vol1 Ch10 RSTP
    • Config Lab CCNA Vol 1 Part 5
      • Vol1 Ch16 Routers
      • Vol1 Ch17 IPv4 Routes
      • Vol1 Ch18 InterVLAN
      • Vol1 Ch19 DHCP & Hosts
      • Vol1 Ch20 Troubleshooting IP
    • Config Lab CCNA Vol 1 Part 6
      • Vol1 Ch22 OSPF Basics
      • Vol1 Ch23 OSPF Options
      • Vol1 Ch24 OSPF Neighbors
    • Config Lab CCNA Vol 1 Part 7
      • Vol1 Ch27 IPv6 Addresses
      • Vol1 Ch29 IPv6 Routing
    • Config Lab CCNA Vol 2 Part 2
      • Vol2 Ch06 Standard ACLs
      • Vol2 Ch07 Extended ACLs
    • Config Lab CCNA Vol 2 Part 3
      • Vol2 Ch11 Port Sec.
      • Vol2 Ch12 Switch Inspections
    • Config Lab CCNA Vol 2 Part 4
      • Vol2 Ch13 Management
      • Vol2 Ch14 NAT/PAT
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    • IPv4 Ch. 11 Addressing Basics
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    • IPv4 Ch. 15 Design Drills
    • IPv4 VLSM
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Discussions to build real CCNA skills
  • Config Labs
    • Config Lab CCNA Vol 1 Part 2
      • Vol1 Ch04 CLI
      • Vol1 Ch06 Switch Mgmt.
      • Vol1 Ch07 Switch Interfaces
    • Config Lab CCNA Vol 1 Part 3
      • Vol1 Ch08 VLANs
      • Vol1 Ch10 RSTP
    • Config Lab CCNA Vol 1 Part 5
      • Vol1 Ch16 Routers
      • Vol1 Ch17 IPv4 Routes
      • Vol1 Ch18 InterVLAN
      • Vol1 Ch19 DHCP & Hosts
      • Vol1 Ch20 Troubleshooting IP
    • Config Lab CCNA Vol 1 Part 6
      • Vol1 Ch22 OSPF Basics
      • Vol1 Ch23 OSPF Options
      • Vol1 Ch24 OSPF Neighbors
    • Config Lab CCNA Vol 1 Part 7
      • Vol1 Ch27 IPv6 Addresses
      • Vol1 Ch29 IPv6 Routing
    • Config Lab CCNA Vol 2 Part 2
      • Vol2 Ch06 Standard ACLs
      • Vol2 Ch07 Extended ACLs
    • Config Lab CCNA Vol 2 Part 3
      • Vol2 Ch11 Port Sec.
      • Vol2 Ch12 Switch Inspections
    • Config Lab CCNA Vol 2 Part 4
      • Vol2 Ch13 Management
      • Vol2 Ch14 NAT/PAT
  • Other Labs
    • CML-Free-Labs
      • CML-Free Layer 2
      • CML-Free Layer 3
    • Ad Hoc Labs
  • Youtube
    • YouTube Playlists
    • Ad Hoc Labs
  • Q&A
    • IPv4 Ch. 11 Addressing Basics
    • IPv4 Ch. 12 Network Analysis
    • IPv4 Ch. 13 Mask Drills
    • IPv4 Ch. 14 Address Drills
    • IPv4 Ch. 15 Design Drills
    • IPv4 VLSM
    • IPv4-Adv Summary Routes
    • IPv6 Address Drills
    • OSPF Enabler
    • STP vs RSTP
  • General
    • Cert News
    • Content News
    • Archived News
    • Study Tips
  • Reference
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    • Final Review
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200-301 V1 Parts

Config Lab: Big OSPF Lab 1
By Wendell Odom
In 200-301 V1 Ch24: OSPF Neighbors, 200-301 V1 Part 6: OSPF, Config Lab, Config Lab CCNA Vol 1 Part 6, Hands-on, Vol1 Ch24 OSPF Neighbors
Posted March 16, 2026

Config Lab: Big OSPF Lab 1

As with all the Config Labs with “BIG” in the title, this lab is different than most. This BIG lab collects many of the configuration topics in Volume 1, Part 6 of the CCNA Official [...]

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Config Lab: BIG IP Routing Lab
By Wendell Odom
In 200-301 V1 Ch17: Router Addresses and Routes, 200-301 V1 Ch18: Routing in LANs, 200-301 V1 Ch19: DHCP, 200-301 V1 Part 5: IPv4 Routing, Config Lab CCNA Vol 1 Part 5, Vol1 Ch20 Troubleshooting IP
Posted January 22, 2026

Config Lab: BIG IP Routing Lab

As with all the Config Labs with “BIG” in the title, this lab is different than most. This BIG lab collects many of the configuration topics in Volume 1, Part 5 of the CCNA Official [...]

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BIG Subnet Design Exercise 1: Plan, Choose, and Configure IP Subnets and Addresses
By Wendell Odom
In 200-301 V1 Ch15: Subnet Design, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 15 Design Drills
Posted October 30, 2025

BIG Subnet Design Exercise 1: Plan, Choose, and Configure IP Subnets and Addresses

IP Subnetting includes a variety of math processes that answer specific questions. But how do those processes then apply to building networks? In this BIG exercise, I’ll pull some of those [...]

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Config Lab: BIG VLAN & STP Lab 1
By Wendell Odom
In 200-301 V1 Ch10: RSTP and EtherChannel, 200-301 V1 Part 3: VLANs, STP, Config Lab CCNA Vol 1 Part 3, Vol1 Ch08 VLANs, Vol1 Ch10 RSTP
Posted September 17, 2025

Config Lab: BIG VLAN & STP Lab 1

This lab is different. Instead of a focused lab about one main topic, this one covers several: VLANs, VLAN trunks, Spanning Tree, and EtherChannel. And most CCNA folks will take more than the [...]

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Choose Subnet Masks 1
By Wendell Odom
In 200-301 V1 Ch15: Subnet Design, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 15 Design Drills, Questions
Posted August 17, 2024

Choose Subnet Masks 1

This post presents questions that ask you to analyze design data about a network and then choose the one subnet mask to use for all subnets. If a company uses one subnet mask for all subnets of [...]

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Analyze Existing Subnet Masks 4
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions
Posted August 5, 2024

Analyze Existing Subnet Masks 4

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

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Analyze Existing Subnet Masks 3
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions
Posted August 5, 2024

Analyze Existing Subnet Masks 3

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

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Analyze Existing Subnet Masks 2
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions
Posted August 5, 2024

Analyze Existing Subnet Masks 2

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

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Analyze Existing Subnet Masks 1
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions
Posted August 5, 2024

Analyze Existing Subnet Masks 1

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

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Find Four Subnet Facts 4
By Wendell Odom
In 200-301 V1 Ch14: Analyzing IPv4 Subnets, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 14 Address Drills, Questions
Posted August 1, 2024

Find Four Subnet Facts 4

These practice posts focus on the single most important subnetting process: Find the four defining facts about a subnet based on one address and mask that resides in that network. Your first goal [...]

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Find Four Subnet Facts 3
By Wendell Odom
In 200-301 V1 Ch14: Analyzing IPv4 Subnets, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 14 Address Drills, Questions
Posted August 1, 2024

Find Four Subnet Facts 3

These practice posts focus on the single most important subnetting process: Find the four defining facts about a subnet based on one address and mask that resides in that network. Your first goal [...]

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Find Four Subnet Facts 2
By Wendell Odom
In 200-301 V1 Ch14: Analyzing IPv4 Subnets, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 14 Address Drills, Questions
Posted August 1, 2024

Find Four Subnet Facts 2

These practice posts focus on the single most important subnetting process: Find the four defining facts about a subnet based on one address and mask that resides in that network. Your first goal [...]

READ MORE
Find Four Subnet Facts 1
By Wendell Odom
In 200-301 V1 Ch14: Analyzing IPv4 Subnets, IPv4 Ch. 14 Address Drills, Questions
Posted August 1, 2024

Find Four Subnet Facts 1

These practice posts focus on the single most important subnetting process: Find the four defining facts about a subnet based on one address and mask that resides in that network. Your first goal [...]

READ MORE
Mask Conversion Drill 3
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions
Posted July 24, 2024

Mask Conversion Drill 3

For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

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Mask Conversion Drill 2
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions
Posted July 24, 2024

Mask Conversion Drill 2

For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

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Mask Conversion Drill 1
By Wendell Odom
In 200-301 V1 Ch13: IPv4 Subnet Masks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 13 Mask Drills, Questions, Uncategorized
Posted July 24, 2024

Mask Conversion Drill 1

For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

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Analyzing IP Networks #3
By Wendell Odom
In 200-301 V1 Ch12: Classful IPv4 Networks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 12 Network Analysis, Questions
Posted July 17, 2024

Analyzing IP Networks #3

This is the My Dear Aunt Sally (Multiplcation/Division/Addition/Subtraction) of the IP addressing and subnetting world. Nothing snazzy, just some exercises and a place to ask questions. For each [...]

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Analyzing IP Networks #2
By Wendell Odom
In 200-301 V1 Ch12: Classful IPv4 Networks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 12 Network Analysis, Questions
Posted July 17, 2024

Analyzing IP Networks #2

For each Analyzing IP Networks post, you have several simple analysis tasks related to classful networks (that is, class A, B, and C networks.) Work on making this analysis automatic and second nature!

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Analyzing IP Networks #1
By Wendell Odom
In 200-301 V1 Ch12: Classful IPv4 Networks, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 12 Network Analysis, Questions
Posted July 17, 2024

Analyzing IP Networks #1

This is the My Dear Aunt Sally (Multiplcation/Division/Addition/Subtraction) of the IP addressing and subnetting world. Nothing snazzy, just some exercises and a place to ask questions. For each [...]

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IP Address Rulebreakers 4
By Wendell Odom
In 200-301 V1 Ch11: IPv4 Subnetting, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 11 Addressing Basics, Questions
Posted July 12, 2024

IP Address Rulebreakers 4

When first learning about IP addressing and subnetting, it helps to first learn the basics and then practice those basics to build confidence. These IP address rulebreaker exercises help you do [...]

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IP Address Rulebreakers 3
By Wendell Odom
In 200-301 V1 Ch11: IPv4 Subnetting, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 11 Addressing Basics, Questions
Posted July 12, 2024

IP Address Rulebreakers 3

When first learning about IP addressing and subnetting, it helps to first learn the basics and then practice those basics to build confidence. These IP address rulebreaker exercises help you do [...]

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IP Address Rulebreakers 2
By Wendell Odom
In 200-301 V1 Ch11: IPv4 Subnetting, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 11 Addressing Basics, Questions
Posted July 12, 2024

IP Address Rulebreakers 2

When first learning about IP addressing and subnetting, it helps to first learn the basics and then practice those basics to build confidence. These IP address rulebreaker exercises help you do [...]

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IP Address Rulebreakers 1
By Wendell Odom
In 200-301 V1 Ch11: IPv4 Subnetting, 200-301 V1 Part 4: IPv4 Addressing, IPv4 Ch. 11 Addressing Basics, Questions
Posted July 11, 2024

IP Address Rulebreakers 1

When first learning about IP addressing and subnetting, it helps to first learn the basics and then practice those basics to build confidence. These IP address rulebreaker exercises help you do [...]

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CLI Exploration 2
By Wendell Odom
In 200-301 V1 Ch04: Command Line, 200-301 V1 Part 2: Ethernet, 200-301 V1 Parts, Config Lab, Config Lab CCNA Vol 1 Part 2, Vol1 Ch04 CLI
Posted May 2, 2023

CLI Exploration 2

Most Config Lab posts here at my blog follow a consistent formula: A problem statement (requirements, figures, and inital configuration), followed by you creating the configuration, and closing [...]

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CLI Exploration 1
By Wendell Odom
In 200-301 V1 Ch04: Command Line, 200-301 V1 Part 2: Ethernet, Config Lab, Config Lab CCNA Vol 1 Part 2, Vol1 Ch04 CLI
Posted May 1, 2023

CLI Exploration 1

All of the Config Lab posts here at my blog follow a consistent formula: A problem statement (requirements, figures, and inital configuration), followed by you creating the configuration, and [...]

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