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IT & SoftwareNetwork & SecuritySubnetting

Binary Math for IPv4 Subnetting

Practice the critical IPv4 subnetting skill of converting from binary to decimal and from decimal to binary.
Rating: 0.0 out of 50.0 (0 ratings)
111 students
Created by Ryan Ayares
Last updated 12/2018
English

Description

Being able to accurately convert between decimal and binary is a critical skill for anyone who needs to perform subnetting on IP Version 4 (IPv4) addresses.  Being able to perform these conversions quickly becomes important when the goal is to pass timed exams such as those for Cisco certification.  Whether you're just learning to subnet or you're looking to improve speed and accuracy, these practice exams will serve you well.

This 'course' is made up of five separate practice tests, with each test consisting of 20 questions.  Two of the practice tests focus on converting binary numbers to decimal numbers.  Two other practice tests are aimed at converting decimal numbers to binary numbers.  The final test is a combination of 10 decimal to binary and 10 binary to decimal practice questions.  Tests 1 and 2 each allow 2 hours to complete, which works out to 6 minutes per question.  The third and fourth tests allow ninety minutes each, or 4-1/2 minutes per question.  The final test allows for one hour, or three minutes per question.


Tip: Students will find it helpful to write out the powers of 2 as shown below as they work through each test question.

128  |  64  |  32  |  16  |  8  |  4  |  2  |  1


For the purposes of this course, questions will use no more than 8 bits, meaning there will be no decimal numbers higher than 255, and no need to write out the powers of two any higher than what is shown in the table above.

Who this course is for:

  • Anyone who needs practice converting decimal numbers to binary and binary numbers to decimal
  • Individuals studying towards Cisco's CCENT or CCNA exams who need to master binary math in order to complete IPv4 subnetting tasks
  • Individuals who are learning IPv4 subnetting who need to improve their binary math skills

Instructor

Ryan Ayares
IT Consultant
Ryan Ayares
  • -- Instructor Rating
  • -- Reviews
  • 111 Students
  • 1 Course

I've been working in IT in some form or another for the past 20 years.  During that time I have done extensive work in the area of desktop support.  That includes a lot of malware removal, software installation, hardware and software maintenance, and disaster recovery.


For the past 15 years a major focus of mine has been networking, with a heavy focus on Cisco certification.


I have also done quite a bit of server related work with both Windows server and VMWare.

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