Which two statements about IPv4 DHCP operations are true? (Choose two.)
A.
If the DHCP clients and servers are on the same subnet, DHCP uses UDP broadcasts to
communicate between the clients and servers.
B.
The DHCP server that receives a DHCPDISCOVER message may respond with a
DHCPOFFER message on UDP port 67.
C.
A client can receive DHCPOFFER from multiple servers and it can accept all the offers by
broadcasting the DHCPREQUEST message to all the servers.
D.
A DHCP relay is required if the DHCP clients and the servers are on the same subnet.
E.
If the client and server are on different subnets, DHCPDISCOVER and DHCPREQUEST
messages are sent via UDP broadcasts, but DHCPOFFER and DHCPACK messages are
unicast.
F.
The client broadcasts a DHCPDISCOVER message on UDP port 68 with its own MAC
address to discover available DHCP servers.
I think that answer A is correct at all…
DHCP server use L2/3 unicast
Client use L2/3 broadcast
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csgo http://oxwall-demo.iyaffle.com/forum/topic/12321
https://www.ietf.org/rfc/rfc2131.txt