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In terms of DHCP messages, what causes a DHCP server to respond with a DHCPNACK message and what happens when a DHCP client receives such DHCP message? (Choose two)
the server is unable to satisfy a DHCPREQUEST message
the client will send a DHCPDECLINE message to the server and restart the configuration process by going into the Requesting state.
the client will send a DHCPDISCOVER message
the server is unable to satisfy a DHCPDISCOVER message
the client restarts the configuration process by going into the Requesting state.
There are four basic steps in DHCP client IP address requests from the server. A DHCP client sends a DHCPDISCOVER broadcast message to locate a Cisco IOS DHCP server. Then, a DHCP server will offer configuration parameters to the client in a DHCPOFFER unicast. The client then will return a request for the offered IP address to the DHCP server in a DHCPREQUEST broadcast message. After which the DHCP server confirms with a DHCPACK unicast message to the client. However, there would be a situation when a DHCP server is unable to satisfy a DHCPREQUEST message, thus, responds with a DHCPNACK message. After receiving such message, the client restarts the configuration process by going into the Requesting state.
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