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27 December, 12:11

A network design engineer has been asked to design the IP addressing scheme for a customer network. The network will use IP addresses from the 192.168.30.0/24 network. The engineer allocates 254 IP addresses for the hosts on the network but excludes 192.168.30.0/24 and 192.168.30.255/24 IP addresses. Why must the engineer exclude these two IP addresses?

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  1. 27 December, 15:06
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    192.168.30.0/24 is the network IP address and 192.168.30.255/24 is the IP broadcast address.

    Explanation:

    The first IP (192.168.30.0/24) address of your subnet is the network address, the last IP (192.168.30.255/24) address of your subnet is your broadcast address and the available usable IP addresses in your subnet are subnet size - 2, because network address and broadcast address cannot be allocated to a system.
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