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350-401 Practice Question: Is a valid VLAN range that can be created on a…
Which of the following is a valid VLAN range that can be created on a Cisco IOS switch?
⚠ Common exam trap
Cisco often tests the misconception that any VLAN ID from 1 to 4094 is valid on any switch, but the trap here is that extended VLANs (1006–4094) require specific VTP modes or configuration, and VLANs 0, 1002–1005, and 4095 are reserved or not user-creatable.
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
✓
VLAN 100
VLAN 100 is a valid VLAN ID because Cisco IOS switches support VLANs in the range 1–1005 for normal-range VLANs, and VLAN 100 falls within this range. Normal-range VLANs are stored in the vlan.dat file and can be created on a standard IOS switch without requiring extended VLAN configuration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
VLAN 100
Why this is correct
Correct. VLAN 100 is within the standard range of 1-1005.
- ✗
VLAN 0
Why it's wrong here
Incorrect. VLAN 0 is not a valid VLAN number.
- ✗
VLAN 4095
Why it's wrong here
Incorrect. VLAN 4095 is reserved.
- ✗
VLAN 1006
Why it's wrong here
Incorrect. VLAN 1006 is an extended VLAN and requires the switch to be in VTP transparent mode or have extended VLAN support enabled.
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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.