Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
Which subnet summarizes and gives the most efficient distribution of (CCNA 200-301)
A corporate office uses four floors in a building.
✑ Floor 1 has 24 users.
✑ Floor 2 has 29 users.
Floor 3 has 28 users.
✑ Floor 4 has 22 users.
Which subnet summarizes and gives the most efficient distribution of IP addresses for the router configuration?
A) 192.168.0.0/24 as summary and 192.168.0.0/28 for each floor.
B) 192.168.0.0/23 as summary and 192.168.0.0/25 for each floor.
C) 192.168.0.0/25 as summary and 192.168.0.0/27 for each floor.
D) 192.168.0.0/26 as summary and 192.168.0.0/29 for each floor.
Solution
Correct answer: C) 192.168.0.0/25 as summary and 192.168.0.0/27 for each floor.
Re-evaluating Option C:
Summary subnet is /25, which provides 128 addresses. Each floor would get a /27 subnet, which provides 32 addresses.
Re-calculating Required IP Addresses for Each Floor:
Floor 1: 24 users
Floor 2: 29 users
Floor 3: 28 users
Floor 4: 22 users
Re-evaluating the Sufficiency of Option C:
Floor 1: Requires 24 addresses. A /27 subnet provides 32 addresses, which is more than sufficient.
Floor 2: Requires 29 addresses. A /27 subnet provides 32 addresses, which is more than sufficient.
Floor 3: Requires 28 addresses. A /27 subnet provides 32 addresses, which is more than sufficient.
Floor 4: Requires 22 addresses. A /27 subnet provides 32 addresses, which is more than sufficient.
Conclusion:
The summary subnet of /25 provides 128 addresses, and each floor would get a /27 subnet, which provides 32 addresses. This configuration is efficient and sufficient for all floors, accommodating the required number of users without wasting IP addresses.
Category: IP Connectivity