easyMultiple ChoiceObjective-mapped
200-901 Practice Question: A network administrator needs to verify that a…
A network administrator needs to verify that a switch port is configured as an access port and assigned to VLAN 30. Which command should be used on a Cisco IOS switch?
⚠ Common exam trap
Cisco often tests the distinction between configuration commands (like 'show running-config') and operational verification commands (like 'show interfaces status'), trapping candidates who assume the running config always reflects the current operational state, especially when 'switchport mode access' is omitted or when a port is in a trunking mode.
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
✓
show interfaces status
The 'show interfaces status' command displays the operational status, VLAN assignment, and duplex/speed settings for all switch ports. When verifying an access port, the output includes the VLAN ID under the 'Vlan' column, confirming the port is assigned to VLAN 30 and operating in access mode (trunk ports show 'trunk' instead). This command directly answers the question without requiring interpretation of running configuration or MAC address tables.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
show running-config interface GigabitEthernet0/1
Why it's wrong here
This shows configuration but may not display 'switchport access vlan 30' if it's default.
- ✓
show interfaces status
Why this is correct
The 'Vlan' column in 'show interfaces status' shows the access VLAN.
- ✗
show mac address-table interface GigabitEthernet0/1
Why it's wrong here
This shows MAC addresses learned on that port, not the VLAN assignment.
- ✗
show vlan brief
Why it's wrong here
This command lists VLANs and their ports but not the access VLAN of a specific port unless you look closely.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 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 200-901 exam.