AWS - VPC Fundamentals
Which of the following is the correct way to specify the CIDR block when creating a custom VPC?
Which of the following is the correct way to specify the CIDR block when creating a custom VPC?
easy📝 Configuration Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Understand CIDR notation
CIDR block defines IP range with format like x.x.x.x/y where y is between 0 and 32.Step 2: Check each option for validity
10.0.0.0/16 is valid CIDR (10.0.0.0/16). 255.255.255.0 is a subnet mask, not CIDR. 192.168.1.256/24 has invalid IP (256). 10.0.0.0/33 has invalid prefix length (33).Final Answer:
10.0.0.0/16 -> Option CQuick Check:
CIDR block format = x.x.x.x/y with y ≤ 32 [OK]
Quick Trick: CIDR uses / and prefix ≤ 32, IP parts ≤ 255 [OK]
Common Mistakes:
MISTAKES- Using subnet mask instead of CIDR
- Using invalid IP numbers like 256
- Using prefix length greater than 32
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