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CIDR Notation

publish date: 2024/08/01 04:12:6.217951 UTC

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In this CIDR, identify the fixed and flexible parts

192.168.1.0/24

  • Fixed (1) transparent
  • Flexible (2) transparent
Please drag and drop the selected option in the right place or type it instead
192.168.1
192.168
192
168.1
0

Correct Answer

(1) 192.168.1
(2) 0

Explanation

CIDR stands for Classless Inter-Domain Routing (CIDR).

It begins with a starting IP address and is separated by a forward slash (the / character) followed by a number. The number at the end specifies how many of the bits of the IP address are fixed. In this example, the first 24 bits of the IP address are fixed. The rest (the last 8 bits) are flexible.

32 total bits subtracted by 24 fixed bits leaves 8 flexible bits.

Reference

AWS Skills Builder, go-math-science.com

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