CCNA Practice Exam Test Sample – Question 97

Refer to the exhibit.
q97-q
What is the most appropriate summarization for these routes?

A. 10.0.0.0 /21
B. 10.0.0.0 /22
C. 10.0.0.0 /23
D. 10.0.0.0 /24

Correct Answer: B
Section: IP addressing (IPv4 / IPv6)

Explanation:
The 10.0.0.0/22 subnet mask will include the 10.0.0.0, 10.0.1.0, 10.0.2.0, and 10.0.3.0 networks, and only those four networks.