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Exam 300-115 All Questions

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Exam 300-115 topic 4 question 150 discussion

Actual exam question from Cisco's 300-115
Question #: 150
Topic #: 4
[All 300-115 Questions]

Which type of packet does DHCP snooping continuously check in a production network?

  • A. DHCP Snooping
  • B. DHCP Relay
  • C. DHCP Request
  • D. DHCP Acknowledge
  • E. DHCP Reply
  • F. DHCP Allow
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Suggested Answer: A 🗳️

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papagussepi
4 years, 10 months ago
https://www.omnisecu.com/tcpip/dhcp-dynamic-host-configuration-protocol-messages.php should be DHCP Acknowledgment
upvoted 1 times
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DimS
5 years, 3 months ago
It's the another unclear question from Cisco as usual. The one hand a switch with DHCP snooping enabled check ALL packets received on the untrusted interface but the other hand DHCP Snooping isn't a DHCP packet type. Sometimes it's just guessing an answer for non-native speakers.
upvoted 2 times
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diegonamaste
5 years, 5 months ago
A switch intercepts all DHCP requests coming from untrusted ports before flooding them throughout the VLAN. Any DHCP replies coming from an untrusted port are discarded because they must have come from a rogue DHCP server. In addition, the offending switch port automatically is shut down in the errdisable state. (From Cisco Official Cert Guide). So I belive that "C" and "E" should be the correct ones
upvoted 1 times
DimS
5 years, 3 months ago
DHCP Reply isn't correct a DHCP packet type.
upvoted 1 times
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Floyd
5 years, 8 months ago
The switch validates DHCP packets received on the untrusted interfaces of VLANs with DHCP snooping enabled. The switch forwards the DHCP packet unless any of the following conditions occur (in which case the packet is dropped): The switch receives a packet (such as a DHCPOFFER, DHCPACK, DHCPNAK, or DHCPLEASEQUERY packet) from a DHCP server outside the network or firewall.
upvoted 1 times
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Floyd
5 years, 8 months ago
According to this reference it should be C and D
upvoted 1 times
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robergalvan
5 years, 10 months ago
This maybe incorrect. It should be C: “A switch intercepts all DHCP REQUESTS coming from untrusted ports before flooding them throughout the VLAN. Any DHCP REPLIES coming from an untrusted port are discarded because they must have come from a rogue DHCP server. In addition, the offending switch port automatically is shut down in the errdisable state”
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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