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Exam 350-701 topic 1 question 93 discussion

Actual exam question from Cisco's 350-701
Question #: 93
Topic #: 1
[All 350-701 Questions]


Refer to the exhibit. An organization is using DHCP Snooping within their network. A user on VLAN 41 on a new switch is complaining that an IP address is not being obtained. Which command should be configured on the switch interface in order to provide the user with network connectivity?

  • A. ip dhcp snooping limit 41
  • B. ip dhcp snooping verify mac-address
  • C. ip dhcp snooping trust
  • D. ip dhcp snooping vlan 41
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by zheka at Nov. 27, 2021, 5:12 p.m.

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zheka
Highly Voted 3 years, 2 months ago
Even though the correct answer is C the entire question and especially exhibit is stupid. We do not know where the DHCP server is. It could be on the same switch or the other switch reachable via the shown interface. If it is on the same switch then adding "ip dhcp snooping trust" on port 41 won't help because it needs added on the port where DHCP server is connected. An untrusted port is a port that does not accept DHCP server messages. In other words, if a device is connected to an untrusted port, it can obtain IP configuration from the DHCP server but it cannot offer an IP configuration. A trusted port is a port that accepts DHCP server messages. In other words, a DHCP server can provide IP configuration only if it is connected to a trusted port.
upvoted 16 times
psuoh
2 years ago
perhaps it is using IP DHCP RELAY command...
upvoted 1 times
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asdasd123123iu
2 years, 8 months ago
I add that command from D is already visible in configuration and answer A i think is incorrect so B and C left. C work like zheka described so theoretically should resolve problem. B I'm not sure if it has any impact for clients, it's just security feature.
upvoted 1 times
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Wdgbill
Highly Voted 2 years, 6 months ago
note here that the config is for the trunk port to a distribution switch and switch to switch ports need to be set to trusted. No detailed information but the possibility exists that the DHCP server is on another switch so without the trunk between switches being trusted no DHCP offers would transit the link
upvoted 6 times
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Marshpillowz
Most Recent 10 months ago
Selected Answer: C
C is correct
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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