hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer configures an RSPAN session on a…
An engineer configures an RSPAN session on a Cisco switch to monitor traffic from VLAN 30 and send it to a remote switch. The engineer creates RSPAN VLAN 200 on both switches and configures the trunk to allow VLAN 200. On the remote switch, the engineer configures the destination port as GigabitEthernet0/4 in VLAN 200. The engineer notices that the destination port is forwarding traffic, but the traffic is not from the source VLAN 30; instead, it is broadcast traffic from other VLANs. What is the most likely cause?
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 RSPAN VLAN is also being used for other VLAN traffic due to misconfiguration.
RSPAN VLANs should be used exclusively for RSPAN traffic and should not have any other VLANs mapped to them. If the RSPAN VLAN is also used for other purposes, it may carry unintended traffic.
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 RSPAN VLAN is also being used for other VLAN traffic due to misconfiguration.
Why this is correct
Correct because the RSPAN VLAN should be a dedicated VLAN; if it is also used as a native VLAN or for other traffic, it will carry unwanted broadcasts.
- ✗
The source VLAN is not configured correctly on the source switch.
Why it's wrong here
Incorrect because the source VLAN is configured; the issue is that the RSPAN VLAN is carrying extra traffic.
- ✗
The destination port is in the wrong VLAN.
Why it's wrong here
Incorrect because the destination port is in VLAN 200, but the problem is that VLAN 200 is not isolated.
- ✗
The trunk is not pruning VLAN 200 correctly.
Why it's wrong here
Incorrect because pruning is not the issue; the VLAN is allowed, but it is carrying extra traffic due to misconfiguration.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 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 300-410 exam.