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What are the preassigned up addresses that all networks must have? Example in the network which addresses would the DHCP SERVER not assign?

Well the gateway which is usually the routers address , the loop back address' and the broadcast adress These numbers will not always be the same. Depends on your subneting

Another security trick is to tell the dhcp server which ip addresses you want to be the gateway, loop back and router ip adress. The last octet of the adress if I'm not mistaken is always. 255 I may be incorrect .


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