JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2023) — Question 49

You notice that there are currently two MAC addresses associated with a single access port in the bridge table on one of your EX Series switches. What are two explanations for this behavior? (Choose two.)

Answer options

• A. The access port connects to an IP phone which connects to a host device.
• B. The native VLAN feature has been associated with the access port.
• C. The mac-move-limit feature has been disabled on the access port.
• D. The access port connects to multiple hosts through a rogue device.

Correct answer: B, D

Explanation

The correct answers are B and D. B is accurate because having the native VLAN associated with the access port can result in multiple MAC addresses being learned. D is also correct as a rogue device can create a scenario where multiple hosts are connected, leading to multiple MAC addresses being seen on a single port. A and C do not explain the behavior correctly as they do not inherently lead to multiple MAC addresses being associated with an access port.