41: you are a network technician at acme, inc. you have subnetted the 192.168.72.0 network with a /30 mask for connections between your routers. your boss asks you how many usable subnetworks and usable host addresses per subnet this will provide. what should you tell her, assuming your router cannot use ip subnet-zero?

　　a. 62 networks and 2 hosts

　　b. 6 networks and 30 hosts

　　c. 8 networks and 32 hosts

　　d. 16 networks and 16 hosts

　　e. 14 networks and 14 hosts

　　42: which of the following ip addresses are considered "network" addresses with a /26 prefix? (choose two.)

　　a. 165.203.2.0

　　b. 165.203.5.192

　　c. 165.203.6.63

　　d. 165.203.6.191

　　e. 165.203.8.255

　　43: identify three valid hosts in any subnet of 192.168.32.0, assuming the subnet mask used is 255.255.255.240. (choose three.)

　　a. 192.168.32.33

　　b. 192.168.32.112

　　c. 192.168.32.119

　　d. 192.168.32.126

　　e. 192.168.32.175

　　f. 192.168.32.208

　　44: a class c network address has been subnetted with a /27 mask. which of the following addresses is a broadcast address for one of the resulting subnets?

　　a. 198.57.78.33

　　b. 198.57.78.64

　　c. 198.57.78.97

　　d. 198.57.78.97

　　e. 198.57.78.159

　　f. 198.57.78.254

　　45: what is the subnetwork address for a host with ip address 165.100.5.68/28?

　　a. 165.100.5.0

　　b. 165.100.5.32

　　c. 165.100.5.64

　　d. 165.100.5.65

　　e. 165.100.5.31

　　f. 165.100.5.1