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Which of the following is the correct CIDR notation format?

easy📝 Syntax Q3 of 15
AWS - VPC Fundamentals
Which of the following is the correct CIDR notation format?
A192.168.1.0-24
B192.168.1.0/24
C192.168.1.0:24
D192.168.1.0#24
Step-by-Step Solution
Solution:

  1. Step 1: Recall CIDR notation syntax

    CIDR uses IP address followed by a slash and mask length, e.g., 192.168.1.0/24.

  2. Step 2: Identify correct format

    Only 192.168.1.0/24 uses slash '/' correctly. Others use invalid separators.

  3. Final Answer:

    192.168.1.0/24 -> Option B

  4. Quick Check:

    CIDR uses slash '/' [OK]
Quick Trick: CIDR always uses '/' between IP and mask [OK]
Common Mistakes:
  • Using dash or colon instead of slash
  • Confusing CIDR with IP range
  • Writing mask without slash

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