CCNA Question

105 pts.
Tags:
IP address
Subnets
This is confusing to me unless I am not seeing the bigger picture. It says configure the router Ip addresses on the E0 and S0 interfaces so that the E0 receives the 11th usable subnet while the S0 receives the 4th usable subnet from the network 192.168.191.0/28. Both interfaces should receive the last available Ip address on the appropriate subnet. Note: The Zero Subnet should not be considered usable for this Scenario Answer: 192.168.191.14 (4th Subnet) and 192.168.191.30(11th Subnet) My answer 192.168.191.48 (4th Subnet) and 192.168.191.160(11th Subnet) Magic number is 16 from 255.255.255.240/28 (256-240=16) 0-15 16-31 32-47 48-63 (4th Subnet) 192.168.191.48 64-79 80-95 96-111 112-127 128-143 144-159 160-175 (11th Subnet) 192.168.191.160 176-191

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  • BlankReg
    The scenario answer is based on a /30 mask. Your answer is correct for the subnets, based on the /28 mask. The IP addresses allocated to the interfaces are not correct, as this is supposed to be "the last available Ip address on the appropriate subnet". You have put the first address, which is the subnet network address, and can not be used for the interfaces. I would recommend you review this, and correct your answer for the interfaces.
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