350-601 Security Practice Question
Exhibit
Refer to the exhibit. ! Output from show running-config | section vlan 100 vlan 100 name TEST private-vlan community no ip redirects ! interface vlan 100 ip address 10.0.0.1/24 private-vlan mapping 101 ! interface ethernet 1/1 switchport mode private-vlan promiscuous switchport private-vlan association trunk 100
Refer to the exhibit. The configuration is intended to provide Layer 2 isolation within VLAN 100 while allowing the promiscuous port (Ethernet 1/1) to communicate with all ports in the community VLAN. However, hosts in VLAN 100 cannot communicate with each other. What is the most likely misconfiguration?
⚠ Common exam trap
Cisco often tests the distinction between 'private-vlan association' (used on trunk ports) and 'private-vlan mapping' (used on promiscuous or host ports), leading candidates to confuse the two commands and misapply them.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The 'switchport private-vlan association trunk' command on Ethernet 1/1 is incorrect; it should be 'switchport private-vlan association mapping' or similar.
The command 'switchport private-vlan association trunk' is invalid for configuring a promiscuous port in a private VLAN. The correct command is 'switchport private-vlan mapping primary-vlan-id secondary-vlan-id' to map the promiscuous port to the primary VLAN and the secondary community VLAN. Without this correct mapping, the promiscuous port cannot forward traffic to hosts in the community VLAN, causing Layer 2 isolation to fail.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The SVI interface needs 'ip address' to be removed.
Why it's wrong here
The SVI needs an IP address for routing.
- ✗
The SVI interface should have 'private-vlan mapping' to the primary VLAN, not the community VLAN.
Why it's wrong here
The mapping on the SVI is for secondary VLANs; it seems correct.
- ✓
The 'switchport private-vlan association trunk' command on Ethernet 1/1 is incorrect; it should be 'switchport private-vlan association mapping' or similar.
Why this is correct
The association command syntax is likely wrong; it should map the secondary VLAN to the promiscuous port.
- ✗
The command 'no ip redirects' should not be applied to the SVI.
Why it's wrong here
'no ip redirects' is harmless.
Visual reference
Go deeper
Related to this question
About these practice questions
This 350-601 question is part of Courseiva's 984-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 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 350-601 exam.