B and C configure fa0/0, so those are incorrect. Bootps uses UDP so A is also incorrect. D is correct, but the answer has a flaw: As they use a non rearrangeable ACL the ACE would be added at the bottom, below the deny rule (rendering the newly added rule useless).
Selected Answer: D
The correct configuration that enables DHCP addressing for hosts connected to interface FastEthernet0/1 on router R4 is option D. The configuration is as follows:
CLI:
interface FastEthernet0/1
ip helper-address 10.0.1.1
!
access-list 100 permit udp host 10.0.1.1 eq bootps host 10.148.2.1
Option D is the only configuration that specifies the correct protocol (udp) and port number (bootps) for DHCP1. Option A specifies the wrong protocol (tcp) and port number (67), while option B specifies the correct protocol but the wrong port number (bootps instead of 67). Option C specifies neither the correct protocol nor the correct port number.
all answers are wrong , the protocol is written at the end not before the destination so it should be c abut C is also missing the transport protocol before the source ,
access-list 100 udp source destination eq 65
As port 67 and bootps is kind of similar in the sense that it doesn't really give you a huge differentiating factor notice the transport protocols.
Bootps and DHCP both are listed as UDP 67.
Answer D
First = need to be configured On Fa 0/1 as the host is this Interface per the Question requirement
Second =DHCP uses UDP port 67
https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol#:~:text=The%20DHCP%20employs%20a%20connectionless,is%20used%20by%20the%20client.
answer: D; BOOTP is implemented using the User Datagram Protocol (UDP) for transport protocol, port number 67 is used by the (DHCP) server for receiving client-requests and port number 68 is used by the client for receiving (DHCP) server responses. BOOTP operates only on IPv4 networks.
ip helper-address must be configured on FastEthernet0/1 right? because it is the interface closest to the clients. So B and C are already eliminated from the choices. And DHCP uses UDP so D is the answer i think. Pls correct me if im wrong
TCP 67 is bootp but DHCP is UDP bootp.
Is TCP or UDP used for DHCP?
The DHCP employs a connectionless service model, using the User Datagram Protocol (UDP). It is implemented with two UDP port numbers for its operations which are the same as for the bootstrap protocol (BOOTP).
B is correct.
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