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IP Address & Subnetting Questions

March 16th, 2020 Go to comments

Note: If you are not sure about Subnetting, please read our Subnetting Tutorial – Subnetting Made Easy.

Question 1

Explanation

A /30 subnet means subnet mask of 255.255.255.252. But 10.2.1.3 255.255.255.252 is a broadcast IP address; only 209.165.201.2/30 is the usable IP address.

Question 2

Question 3

Explanation

This question asks about the private ranges of IPv4 addresses. The private ranges of each class of IPv4 are listed below:

Class A private IP address ranges from 10.0.0.0 to 10.255.255.255
Class B private IP address ranges from 172.16.0.0 to 172.31.255.255
Class C private IP address ranges from 192.168.0.0 to 192.168.255.255

Only the network 172.28.0.0/16 belongs to the private IP address (of class B).

Comments (3) Comments
  1. Bill
    June 23rd, 2020

    This is probably obvious but, what makes 10.2.1.3 a broadcast address? In question one.

  2. Bill
    June 24th, 2020

    Disregard

  3. Rutvik
    June 29th, 2020

    Hey Bill,
    by solving que you will get 10.2.1.3 as broadcast address.As it is /30 it is point to point connection. SO it has only 2 valid host. we can see here N/w id is 10.2.1.0 ,First vaslid host is 10.0.1.1 ,Last valid host 10.2.1.0 , BroadCast address 10.2.1.3 …… we cant use Broadcast address as IP.

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