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Figure out how many subnets are available given the following network addresses: 244.0.0/20

Figure out how many subnets are available given the following network addresses: 244.0.0/20

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Figure out how many subnets are available given the following network addresses:

  1. 244.0.0/20
Expert Solution
Step 1

In IP addressing we have total 4 octet of 8 bit each.

So there are total 32 bits in IP addressing.

To find number of subnets available in a given IP address the formula is 

232-n 

Where n is number of bits in bitmask

Here the IP address is

1.244.0.0/20

Here 20 represent mask bits.

Thus n=20.

So, Number of possible subnets are 

232-n = 232-20 = 212 = 4096

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