An office has 8 floors with approximately 30-40 users per floor What command must be configured on the router Switched Virtual Interface to use address space efficiently?
ip address 192.168.0.0 255.255.254.0. Eight floors with roughly 30 to 40 users each require an address block large enough for about 320 hosts, plus growth and reserved addresses. A /23 provides 512 total IPv4 addresses and 510 usable host addresses, which is far more efficient than a /16 while still large enough for the building. A /25 supports only 126 usable hosts, and a /27 supports only 30 usable hosts, which is too small for a floor with up to 40 users if each floor needs its own subnet. Cisco CCNA 200-301 v1.1 Network Fundamentals requires subnet sizing by usable host count, not by guessing at classful ranges. The subnet mask 255.255.254.0 corresponds to /23. It fits the stated requirement with reasonable efficiency and avoids the massive waste of 255.255.0.0. Therefore, the correct router SVI addressing choice is the /23 option.
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