You issue the show running-config command on a CME router and receive the following partial output
Examine the output, and use the information you gather to answer the question.
How many IP phones will be able to automatically obtain an IP address? (Select the best answer.)
Only five IP phones will be able to automatically obtain an IP address because nine IP addresses in the network range have been excluded from being leased by Dynamic Host Configuration Protocol (DHCP) in this configuration. The syntax of the ip dhcp excluded address command is ip dhcp excludedaddress low-address [highaddress], where low address and highaddress specify the lower and upper boundaries of the excluded address range, respectively. In this configuration, the assignable host address range from 192.168.14.1 through 192.168.14.9 has been excluded from being automatically assigned by DHCP.
Furthermore, the network command in this configuration limits the entire range of the Voice over IP (VoIP) network to a total of 14 assignable addresses. The networkcommand is used to specify which IP address range should be assigned to clients and which subnet should receive the addresses. The syntax of the network command is networkaddress [mask | /prefix], where address is the network address, mask is the subnet mask, and prefix is the prefix length in Classless InterDomain Routing (CIDR) notation.
In this configuration, the subnet mask of 255.255.255.240 creates a 16address subnet of the Class C 192.168.14.0 network. The first address and the last address of that subnet are the network address and the broadcast address, respectively. Therefore, only the address range from 192.168.14.1 through 192.168.14.14 is assignable to hosts. Because the range from 192.168.14.1 through 192.168.14.9 is excluded from DHCP, only the range from 192.168.14.10 through 192.168.14.14 can be automatically assigned to IP phones.