CLCOR Infrastructure And Design Practice Question
When deploying Cisco IP phones, what is the best practice for VLAN configuration?
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
✓
Use a dedicated Voice VLAN.
Phones should be placed in a dedicated Voice VLAN for security and QoS performance reasons.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use the default VLAN 1 for all voice and data.
Why it's wrong here
Mixing voice and data in VLAN 1 is a security and performance risk.
- ✓
Use a dedicated Voice VLAN.
Why this is correct
Separating voice from data is a fundamental design best practice.
- ✗
Use a separate physical switch for phones.
Why it's wrong here
This is unnecessary and increases operational costs.
- ✗
Do not use VLANs; use static routing.
Why it's wrong here
VLANs are essential for modern Layer 2 switching environments.
Visual reference
About these practice questions
Courseiva writes every CLCOR question from scratch — 263 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This CLCOR 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 CLCOR exam.