AWS Cloud Practitioner Questions | Networking & VPC

Question 1: What does this CIDR 10.0.4.0/28 correspond to? Answer (1): CIDR notation "/28" indicates a subnet with 16 available IP addresses, ranging from the starting address 10.0.4.0 to 10.0.4.15, as only the last four bits change in this subnet. Great job understanding how CIDR notation works! Question 2: You have a corporate network of size 10.0.0.0/8 and a satellite office of size 192.168.0.0/16. Which CIDR is acceptable for your AWS VPC if you plan on connecting your networks later on? Answer (2): It fits within the private IP address range and does not overlap with your existing networks, which is essential for proper routing and connectivity in your AWS VPC. This choice also adheres to the maximum CIDR size requirement in AWS, ensuring effective network management. How to get the answer: A Step-by-Step Guide 1. Identify the "Taken" Space First, look at the private IP ranges already in use. According to RFC 1918, there are three main blocks reserved for private networks: 10.0.0.