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mediumDrag & DropObjective-mapped
CCNP Practice Question: Drag and drop the steps of IP Source Guard…
Drag and drop the steps of IP Source Guard binding and enforcement into the correct order, from first to last.
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Switch learns IP-to-port binding from DHCP snooping
IP Source Guard first builds the binding from DHCP snooping, then installs a per-port ACL to permit only the bound IP, applies the ACL to the access port, checks all incoming IP traffic against the ACL, and drops any traffic with a source IP not in the binding.
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Variation 1. Drag and drop the steps of IP Source Guard binding and enforcement into the correct order, from first to last.
medium- ✓ A.Enable DHCP snooping to populate binding table
- ✓ B.Enable IP Source Guard on the access interface
- ✓ C.Switch creates per-port VLAN ACL from binding
- ✓ D.Packet arrives and source IP is checked against binding
- ✓ E.Forward packet if IP matches or drop if mismatch
Why A: IP Source Guard relies on the DHCP snooping binding table. It is enabled on an interface, and then the switch creates a PVACL based on the binding. When a packet arrives, the source IP is checked against the binding; if it matches, the packet is forwarded; otherwise, it is dropped.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.