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Exam 200-301 topic 1 question 582 discussion

Actual exam question from Cisco's 200-301
Question #: 582
Topic #: 1
[All 200-301 Questions]


Refer to the exhibit. Which configuration enables DHCP addressing for hosts connected to interface FastEthernet0/1 on router R4?

  • A. interface FastEthernet0/1 ip helper-address 10.0.1.1 ! access-list 100 permit tcp host 10.0.1.1 eq 67 host 10.148.2.1
  • B. interface FastEthernet0/0 ip helper-address 10.0.1.1 ! access-list 100 permit udp host 10.0.1.1 eq bootps host 10.148.2.1
  • C. interface FastEthernet0/0 ip helper-address 10.0.1.1 ! access-list 100 permit host 10.0.1.1 host 10.148.2.1 eq bootps
  • D. 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
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Suggested Answer: D 🗳️

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rijstraket
Highly Voted 1 year, 9 months ago
Selected Answer: D
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).
upvoted 13 times
StingVN
1 year, 4 months ago
agree yo
upvoted 3 times
doctordoom
9 months, 1 week ago
dang ol, yo man
upvoted 3 times
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[Removed]
Most Recent 5 months, 3 weeks ago
Selected Answer: D
it´s D simply.. fe0/1 + UDP
upvoted 1 times
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Zen9Wu
11 months ago
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.
upvoted 4 times
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kyleptt
11 months, 3 weeks ago
Selected Answer: A
Consider UDP port 67/68 for DHCP ; A seems best
upvoted 3 times
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Eallam
1 year, 3 months ago
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
upvoted 4 times
Cynthia2023
1 year, 1 month ago
the protocol written immediately after the source IP address is because it's the source port
upvoted 1 times
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enzo86
1 year, 5 months ago
Selected Answer: D
dhcp is udp and iphelper in f0/1 interface LAN
upvoted 3 times
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RougePotatoe
1 year, 10 months ago
Selected Answer: D
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.
upvoted 3 times
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Garfieldcat
1 year, 11 months ago
why only permit specific host instead of network ? the question is asking the config to allow source hosts of the subnet.
upvoted 3 times
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Goh0503
1 year, 11 months ago
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.
upvoted 3 times
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creaguy
1 year, 11 months ago
Selected Answer: D
*I mean DHCP uses UDP port 67 https://www.sysnettechsolutions.com/en/what-is-bootp/
upvoted 3 times
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creaguy
1 year, 11 months ago
Selected Answer: D
DHCP uses TCP port 67 https://www.sysnettechsolutions.com/en/what-is-bootp/
upvoted 1 times
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JonasWolfxin
1 year, 12 months ago
Selected Answer: D
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.
upvoted 3 times
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king_oat
1 year, 12 months ago
Selected Answer: A
A is correct. Can assign TCP to port 67 (DHCP)
upvoted 1 times
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splashy
2 years ago
Selected Answer: D
"for hosts connected to interface FastEthernet0/1" not B &C DHCP is UDP port 67 D is correct
upvoted 2 times
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HeinyHo
2 years ago
Selected Answer: D
LAN is Fa 0/1 and DHCP is UDP so it's D
upvoted 2 times
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joondale
2 years ago
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
upvoted 4 times
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rictorres333
2 years ago
Selected Answer: B
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.
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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