4.63 out of 5
4.63
2718 reviews on Udemy

The Complete IP Subnetting Course: Beginner to Advanced!

A deep dive into IP addressing and IP subnetting. Great for CCNA/CCNP, MCSE and CompTIA students.
Instructor:
Learn to Excel Online
71,771 students enrolled
English [Auto-generated]
How to subnet using shortcuts.
How to approach typical subnetting questions found in the CCNA, MCSA or CompTIA Network+ exams.

5 Stars ⭐⭐⭐⭐⭐
“I needed to study this for exams and what I got was more than I thought I would. Best thing is I wasn’t bored when he was teaching!”
Arkam Ramzan

This course dives deep into IPv4 addressing and IPv4 subnetting. Starting with binary math and ending with difficult IPv4 subnetting problems this course will prepare you for the subnetting questions on the CCNA, MCSA and CompTIA Network+ exams. Full of shortcuts and useful insights you will gain the clearest understanding of IPv4 addressing and IPv4 subnetting you have every had. 

This course divides the material up into small increments and then conquers each with multiple examples, practice questions and video explanations. You will never just get stuck on IPv4 subnetting again. 

We actively monitor the Q&A forum and will respond to every relevant question with a helpful answer. We are committed to helping every student achieve their learning goals and will listen to all comments and suggestions. 

We invite you to enroll in our course and become an IPv4 subnetting expert today!

Here are some reviews from past students:

5 Stars ⭐⭐⭐⭐⭐
“I am truly amazed the instructor is not a doctor, has a lot of patience. I really took to heart what was taught with the lectures with this subnetting course. Your efforts in instruction carry a lot of weight in gaining the insight I can take away with this knowledgeable and yet so down to earth lesson. Thank you so very much.”
Dale Mork 

5 Stars ⭐⭐⭐⭐⭐
The explanation is very thorough, I like that he is taking us baby steps in order to understand the whole procedure.recommend it for anyone!”
Ramona Obreja

5 Stars ⭐⭐⭐⭐⭐
“Excellent Course. I wish I could have gained this clarity in 1998 when I first obtained my CCNA. Your short cuts are GREAT!!! Your explanations are very clear and understandable. I am updating my skills after a layoff and you have prepared me to move forward. Thanks!!!”
Melanie Wright

Introduction

1
How To Get The Most Out Of This Course

Quick course overview and advice.

Binary Math

1
Binary Math Section Overview
2
Converting from Binary to Decimal Tutorial

Video tutorial for converting binary to decimal. 

3
Converting from Binary to Decimal Worked Example

Worked example

Convert this binary number to decimal without the use of a calculator: 

11001010

4
Converting from Binary to Decimal Quiz
Practice questions for converting binary numbers to decimal.
5
Explanations to Converting from Binary to Decimal Quiz

Video explanations for the 'Converting from Binary to Decimal Quiz'.

6
Converting from Decimal to Binary Tutorial

Video tutorial for converting decimal to binary. 

7
Converting from Decimal to Binary Worked Example

Worked example.

Convert this decimal number to binary without the use of a calculator:

157

8
Converting from Decimal to Binary Quiz
Practice questions for converting decimal numbers to binary.
9
Explanations to Converting from Decimal to Binary Quiz

Video explanations for the 'Converting from Decimal to Binary Quiz'.

The Structure of an IPv4 Address

1
IPv4 Address Structure Section Overview
2
Introduction to the IPv4 Address

Introductory basics for IPv4 addresses such as the address length and the concept of an octet.

3
IPv4 Address Structure with a Subnet Mask

Dividing the IP address into Network ID and Host ID using a subnet mask. 

The following three examples are explored in detail:

  1. Divide 192.168.1.5 / 255.255.255.0 into Network ID and Host ID.
  2. Divide 172.16.5.9 / 255.255.0.0 into Network ID and Host ID.
  3. Divide 192.168.5.130 / 255.255.255.192 into Network ID and Host ID.
4
IPv4 Address Structure with a Subnet Mask Example 1

Dividing an IP address into Network ID and Host ID using a subnet mask. 

The following example is explored in detail:

  • Divide 192.168.9.63 / 255.255.255.0 into Network ID and Host ID.
5
IPv4 Address Structure Quiz A

Practice questions for dividing an IPv4 address into Network ID and Host ID with a given subnet mask.

6
Explanations to IPv4 Address Structure Quiz A

Video explanations for the 'IPv4 Address Structure Quiz A'.

7
IPv4 Address Structure with a Subnet Mask Example 2

Dividing an IP address into Network ID and Host ID using a subnet mask. 

The following example is explored in detail:

  • Divide 192.168.9.70 / 255.255.255.192 into Network ID and Host ID.
8
IPv4 Address Structure Quiz B

Practice questions for dividing an IPv4 address into Network ID and Host ID with a given subnet mask.

9
Explanations to IPv4 Address Structure Quiz B

Video explanations for the 'IPv4 Address Structure Quiz B'.

10
CIDR Notation

An introduction to the prefix length and CIDR Notation. 

11
IPv4 Address Structure with CIDR Notation Example 1

Dividing an IP address into Network ID and Host ID using a prefix length. 

The following example is explored in detail:

  • Divide 192.168.88.66 /26 into Network ID and Host ID.
12
IPv4 Address Structure Quiz C
Divide an IPv4 address into Network ID and Host ID using a given prefix length.
13
Explanations to IPv4 Address Structure Quiz C

Video explanations for the 'IPv4 Address Structure Quiz C'.

14
Converting a Subnet Mask to Prefix Length Example

Converting a subnet mask to a prefix length. The following example is explored:

How to convert a subnet mask of 255.255.255.224 to a prefix length?

15
Converting a Subnet Mask to Prefix Length Quiz
Practice questions for converting a subnet mask to a prefix length.
16
Explanations to Converting a Subnet Mask to Prefix Length Quiz

Video explanations for the 'Converting a Subnet Mask to Prefix Length Quiz'.

17
Converting Prefix Length to a Subnet Mask Worked Example

A tutorial on converting a prefix length to a subnet mask. In this video we explore converting /15 to a subnet mask. 

18
Converting Prefix Length to a Subnet Mask Quiz
Practice questions for converting a prefix length to a subnet mask.
19
Explanations to Converting Prefix Length to a Subnet Mask Quiz

Video explanations on the 'Converting Prefix Length to a Subnet Mask Quiz'.

20
Subnet Mask and Prefix Length Cheatsheet

IPv4 Address Types

1
IPv4 Cram Sheet

IPv4 cram sheet containing IPv4 addressing rules, IPv4 Classes, IPv4 Private address ranges and the Automatic Private IP Address (APIPA) range.

2
IPv4 Address Types Section Overview
3
IPv4 Transmission Types

A description of the unicast, multicast and broadcast transmission types. 

4
Special IPv4 Addresses

A description of the network ID, directed broadcast IP, broadcast IP and the loopback IP address range. 

5
Calculating the Number of IPs per Network ID

A tutorial on calculating the number of IP addresses for a given network ID.

6
Calculating the Number of IPs per Network ID Worked Example

Two worked examples on calculating the number of IP addresses in a given network. The examples used are:

Calculate the number of IP addresses in the network given:

  • 172.18.32.0 /19
  • 192.168.5.64 / 255.255.255.192
7
Calculating the Number of IPs per Network ID Quiz
Practice questions for calculating the number of IPs per network ID.
8
Explanations to Calculating the Number of IPs per Network ID Quiz 1-10

Video explanations for the 'Calculating the Number of IPs per Network ID Quiz' questions 1-10.

9
Explanations to Calculating the Number of IPs per Network ID Quiz 11-18

Video explanations for the 'Calculating the Number of IPs per Network ID Quiz' questions 11-18.

10
IPv4 Address Classes Section Overview
11
IPv4 Address Class A

Detailed tutorial of Class A.

12
IPv4 Address Class B

Detailed tutorial of Class B.

13
IPv4 Address Class C

Detailed tutorial of Class C.

14
IPv4 Address Class D

Detailed tutorial of Class D.

15
IPv4 Address Class E

Detailed tutorial of Class E.

16
IPv4 Address Classes Quiz
Practice questions for IPv4 address classes.
17
Explanations to IPv4 Address Classes Quiz

Video explanations for the 'IPv4 Classes Quiz'.

18
Private IP Address Ranges Tutorial

Detailed description of the Private IP Address Ranges.

19
APIPA - Automatic Private IP Address Tutorial

Detailed description for the Automatic Private IP Address range.

20
Private vs Public IPv4 Addresses Quiz
Practice questions for private and public IPv4 addresses.
21
Explanations to Private vs Public IPv4 Addresses Quiz

Video explanations for the 'Private vs Public IPv4 Address Quiz'.

Subnetting

1
Subnetting Section Overview
2
What is subnetting?

A brief description of subnetting.

3
How to subnet? Overview part 1

An introduction to the subnetting process. Part 1.

4
How to subnet? Overview part 2

An introduction to the subnetting process. Part 2.

5
Full Subnetting Worked Example A part 1

A detailed subnetting demonstration with complete explanations. Part 1. 

6
Full Subnetting Worked Example A part 2

A detailed subnetting demonstration with complete explanations. Part 2. 

7
Full Subnetting Worked Example A part 3

A detailed subnetting demonstration with complete explanations. Part 3.

8
Full Subnetting Worked Example B part 1

A detailed subnetting demonstration with complete explanations. Part 1.

9
Full Subnetting Worked Example B part 2

A detailed subnetting demonstration with complete explanations. Part 2. 

10
Full Subnetting Worked Example B part 3

A detailed subnetting demonstration with complete explanations. Part 3.

11
Subnetting Quiz Case 1
A full subnetting practice question.
12
Explanations: Subnetting Quiz Case 1

A detailed video explanation to the 'Subnetting Quiz Case 1'.

13
Subnetting Quiz Case 2
A full subnetting practice question.
14
Explanations: Subnetting Quiz Case 2

A detailed video explanation to the 'Subnetting Quiz Case 2'.

15
Subnetting Question Type A

Which of the following IP addresses are on the same subnet?

A: 192.168.55.60 255.255.255.240
B: 192.168.55.63 255.255.255.240
C: 192.168.55.65 255.255.255.240

16
Subnetting Practice Questions Type A

Subnetting practice questions.

17
Explanations: Subnetting Practice Questions Type A Quiz

Detailed explanations to the 'Subnetting Practice Questions Type A'.

18
Subnetting Question Type B

Quickly identify the subnet that the IP 192.168.201.40 /28 belongs to.

19
Subnetting Practice Questions Type B

Subnetting practice questions.

20
Explanations: Subnetting Practice Questions Type B Quiz

Detailed explanations to the 'Subnetting Practice Questions Type B'.

21
Subnetting Question Type C

Which of the following is a directed broadcast IP address?
A: 192.168.55.0 /28
B: 192.168.55.95 /27
C: 192.168.55.96 /27
D: 192.168.55.7 /30

22
Subnetting Practice Question Type C

Subnetting practice questions.

23
Explanations: Subnetting Practice Questions Type C Q1

Detailed explanations for question 1 from the 'Subnetting Practice Questions Type C' quiz.

24
Explanations: Subnetting Practice Questions Type C Q2

Detailed explanations for question 2 from the 'Subnetting Practice Questions Type C' quiz.

25
Explanations: Subnetting Practice Questions Type C Q3

Detailed explanations for question 3 from the 'Subnetting Practice Questions Type C' quiz.

26
Subnetting Question Type D

A PC has the IP address 192.168.28.150 255.255.255.192. It is configured to use the default gateway IP 192.168.28.128. Why is it not able to access the Internet?

27
Subnetting Practice Questions 1 - 10
A batch of 10 assorted subnetting practice questions.

Bonus Content

1
Bonus Lecture
You can view and review the lecture materials indefinitely, like an on-demand channel.
Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don't have an internet connection, some instructors also let their students download course lectures. That's up to the instructor though, so make sure you get on their good side!
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5 hours on-demand video
3 articles
Full lifetime access
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Certificate of Completion
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