[Solved] Given this security group rule for an RDS instance:Inbound: TCP, Port 5432, Source: 192.168.1.0/24Which client IP can connect successfully? | AWS

AWS - RDS and Relational Databases

Given this security group rule for an RDS instance:
Inbound: TCP, Port 5432, Source: 192.168.1.0/24
Which client IP can connect successfully?

A192.168.1.50

B192.168.2.10

C10.0.0.5

D172.16.0.1

Step-by-Step Solution

Solution:

Step 1: Understand CIDR range 192.168.1.0/24
This range includes all IPs from 192.168.1.0 to 192.168.1.255.
Step 2: Check which IP falls inside this range
192.168.1.50 is inside the range; others are outside.
Final Answer:
192.168.1.50 -> Option A
Quick Check:
192.168.1.0/24 includes 192.168.1.50 [OK]

Quick Trick: Check if IP fits CIDR range to allow connection [OK]

Common Mistakes:

Master "RDS and Relational Databases" in AWS

9 interactive learning modes - each teaches the same concept differently

More AWS Quizzes

Given this security group rule for an RDS instance: