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Exam 300-115 topic 4 question 26 discussion

Actual exam question from Cisco's 300-115
Question #: 26
Topic #: 4
[All 300-115 Questions]

On which layer does IP source guard provide filtering to prevent a malicious host from impersonating the IP address of a legitimate host?

  • A. Layer 1
  • B. Layer 2
  • C. Layer 3
  • D. Layer 7
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Suggested Answer: B 🗳️
by Bastex at Nov. 9, 2019, 2:23 p.m.

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Bastex
5 years, 7 months ago
"IP Source Guard provides source IP address filtering on a Layer 2 port to prevent a malicious host from impersonating a legitimate host by assuming the legitimate host’s IP address. The feature uses dynamic DHCP snooping and static IP source binding to match IP addresses to hosts on untrusted Layer 2 access ports." https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/ipsrcgrd.pdf
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