CCNA: Cisco Certified Network Associate — Question 265

An office has 8 floors with approximately 30-40 users per floor. One subnet must be used. Which command must be configured on the router Switched Virtual
Interface to use address space efficiently?

Answer options

• A. ip address 192.168.0.0 255.255.0.0
• B. ip address 192.168.0.0 255.255.254.0
• C. ip address 192.168.0.0 255.255.255.128
• D. ip address 192.168.0.0 255.255.255.224

Correct answer: B

Explanation

The correct answer is B, as the subnet mask 255.255.254.0 provides 512 IP addresses, accommodating the needs of 8 floors with 30-40 users each. Option A allocates too many addresses, while C and D offer insufficient addresses for the total user count required.