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Exams2V0-621Questions#149
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2V0-621 · Question #149

2V0-621 Question #149: Real Exam Question with Answer & Explanation

The correct answer is A: Change the PVLAN type for the Accounting network to Promiscuous.. Isolated secondary PVLANs can only communicate with promiscuous ports, so Accounting (Community) cannot reach Marketing (Isolated) under the current setup. The fix requires placing Accounting into a promiscuous role or the primary VLAN.

Question

An administrator creates a Private VLAN with a Primary VLAN ID of 2. The administrator than creates three Private VLANs as follows: Marketing PVLAN ID. 4 PVLAN Type. Isolated Accounting PVLAN ID. 5 PVLAN Type. Community Secretary PVLAN ID. 17 PVLAN Type. Isolated Users in the Accounting PVLAN are reporting problems communicating with servers in the Marketing PVLAN. Which two actions could the administrator take to resolve this problem? (Choose two.)

Options

  • AChange the PVLAN type for the Accounting network to Promiscuous.
  • BChange the PVLAN ID for the Accounting network to 2.
  • CChange the PVLAN type for Marketing network to Promiscuous.
  • DChange the PVLAN ID for Accounting network to 4.

Explanation

Isolated secondary PVLANs can only communicate with promiscuous ports, so Accounting (Community) cannot reach Marketing (Isolated) under the current setup. The fix requires placing Accounting into a promiscuous role or the primary VLAN.

Common mistakes.

  • C. Changing Marketing to Promiscuous does not resolve the issue because community ports in Accounting are still restricted from initiating traffic to what were formerly isolated-type ports under PVLAN forwarding rules.
  • D. Moving Accounting's PVLAN ID to 4 places it in the same isolated PVLAN as Marketing, but isolated ports cannot communicate with each other regardless of sharing the same PVLAN ID - they can only reach promiscuous ports.

Concept tested. Private VLAN secondary type communication restrictions

Reference. https://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/10554-21.html

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