CompTIA Network+ (N10-007) — Question 1

Based on networks 10.8.16.0/22 and 10.8.31.0/21, which of the following is the BEST summarized CIDR notation?

Answer options

• A. 10.8.0.0/16
• B. 10.8.0.0/19
• C. 10.8.0.0/20
• D. 10.0.0.0/24

Correct answer: A

Explanation

The summarized CIDR notation for the given networks is 10.8.0.0/16, as it encompasses both 10.8.16.0/22 and 10.8.31.0/21 within its range. The other options, while valid CIDR notations, do not cover the entire range of the specified networks, making them less suitable as summarizations.