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350-401 Practice Question: Which two statements about VLAN configuration and…
Which two statements about VLAN configuration and verification on a Cisco IOS switch are true? (Choose two.)
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 1 and VLANs 1002-1005 cannot be deleted.
Correct: A is true because VLANs 1 and 1002-1005 are reserved (default) and cannot be deleted. B is true because 'show vlan brief' displays only VLANs that exist in the VLAN database, not all possible VLANs. C is incorrect because the 'switchport access vlan' command assigns a port to a VLAN, but the VLAN must already exist or be created first; the command does not automatically create the VLAN. D is incorrect because 'no switchport' converts the interface to a Layer 3 routed port, which does not participate in VLANs. E is incorrect because the extended VLAN range (1006-4094) is not saved in vlan.dat by default; they are stored in the running 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 1 and VLANs 1002-1005 cannot be deleted.
Why this is correct
Correct because these are default VLANs that are automatically created and cannot be removed.
- ✓
The 'show vlan brief' command only displays VLANs that have been created on the switch.
Why this is correct
Correct because it shows only configured VLANs, not all possible VLAN numbers.
- ✗
The 'switchport access vlan 10' command automatically creates VLAN 10 if it does not exist.
Why it's wrong here
Incorrect because the command assigns the port to VLAN 10, but VLAN 10 must already be created; otherwise the port remains inactive.
- ✗
The 'no switchport' command on a switch port places it into the default VLAN.
Why it's wrong here
Incorrect because 'no switchport' makes the interface a Layer 3 routed port, removing it from VLAN operation.
- ✗
Extended VLANs (1006-4094) are stored in the vlan.dat file by default.
Why it's wrong here
Incorrect because extended VLANs are stored in the running configuration, not in vlan.dat, unless VTP version 3 is used.
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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.