From e6b68ba2761440d0cd19abaad2020e9a8a9acb6f Mon Sep 17 00:00:00 2001
From: Saad Ali <pakwheels@PakWheelss-MacBook-Pro-3.local>
Date: Fri, 13 Sep 2024 15:42:50 +0500
Subject: [PATCH] Added CIDR information to Day-4

---
 day-4/README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/day-4/README.md b/day-4/README.md
index 225c19ec..2cf2f11f 100644
--- a/day-4/README.md
+++ b/day-4/README.md
@@ -59,6 +59,9 @@ VPC Flow Logs
 VPN connections
 
     Connect your VPCs to your on-premises networks using AWS Virtual Private Network (AWS VPN).
+CIDR
+
+    CIDR stands for Classless Inter-Domain Routing. It is a method for allocating IP addresses and for IP routing. For example The total no. of IPs for this CIDR (10.0.0.0/24) is 32–24=8 and 2⁸ = 256.
 
 
 ## Resources