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Subnet Exercise 02

Updated on April 28, 2012

This page contains one exercise based on IP addressing and subnetting. At first the problem definition and some questions are given. Later, the solution of the questions are given. Please, at first try to solve yourself. When you have finished then look the answers / solutions. If you go forward in this way, I'm sure you do better.

[Note: Visit Subnetting Index or type http://hubpages.com/_ccna/hub/Subnet to your browser address bar to learn a-to-z of subnetting. Many examples are there to make you a smart master of subnetting.]

Problem Definition and Questions:

Number of needed usable subnets are....5
Number of needed usable hosts are.......30
Network address is.............................192.168.8.0

Based on the above information, find the followings:

[a]Which class does the IP belong?
                                                             

[b]What is the default subnet mask of that IP?
                                                             

[c]What is the custom subnet mask of that IP?
                                                             

[d]How many bits are required to make the subnet?
                                                             

[e]What is the the total number of subnets?
                                                             

[f]What is the total number of usable subnets?
                                                             

[g]What is the total number of host addresses?
                                                             

[h]What is the total number of usable host addresses?
                                                             

[i]
What is the total number of host bits?
                                                             

Solution of the above questions:

[a]Which class does the IP belong?
Ans        Class C

[b]What is the default subnet mask of that IP?
Ans        255.255.255.0

[c]What is the custom subnet mask of that IP?
Ans        255.255.255.255

[d]How many bits are required to make the subnet?
Ans        6

[e]What is the the total number of subnets?
Ans        64

[f]What is the total number of usable subnets?
Ans        62

[g]What is the total number of host addresses?
Ans        4

[h]What is the total number of usable host addresses?
Ans        2

[i]What is the total number of host bits?
Ans        2

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      Cmos 6 years ago

      That's is wrong!!! it's a class C, custom subnet mask 255.255.255.224, 3 bits required for subnets, 8 total subnets, 6 usable subnets, 32 total host, 30 usable host address, and host bit we've are 5........... :|

    • profile image

      ccna 6 years ago

      Wrong. 3bits borrowed for subnets 255.255.255.224 subnet mask and 5 bits for hosts

    • profile image

      Mubashar Ali 6 years ago

      Wrong ......... the above comments are correct ...

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