A technician has finished installing the operating system on a new server and needs to provide IP addressing information. The server will be connected to the DMZ network. Devices on the network use…

192.168.55.1 is already designated as the default gateway address; assigning that same IP to the server would create an IP conflict rendering both devices unreachable.

With a subnet mask of 255.255.255.128 (/25), the network 192.168.55.0/25 spans usable host addresses 192.168.55.1 through 192.168.55.126. Both the gateway (192.168.55.1) and the proposed server IP (192.168.55.5) fall within this range, making this a valid, routable, non-reserved assignment on the same subnet.

With a /25 mask, 192.168.55.155 belongs to the second subnet (192.168.55.128/25, usable range .129-.254), while the gateway 192.168.55.1 is in the first subnet (.0-.127) - the two would be on different subnets and unable to communicate without an additional router.

192.168.55.255 is the directed broadcast address of the 192.168.55.0/24 network and cannot be assigned as a unicast host address.