CLCOR Cloud And Hybrid Services Practice Question
Which option allows a customer to keep their existing PSTN numbers while moving to Webex Calling?
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
✓
Number porting.
Number porting allows customers to move their existing numbers from their current carrier to the Webex Calling service provider.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Number aliasing.
Why it's wrong here
Aliasing is not a standard term for number management.
- ✗
Number forwarding.
Why it's wrong here
Forwarding simply redirects calls; it does not move the number ownership.
- ✓
Number porting.
Why this is correct
Number porting is the industry-standard process for moving numbers between providers.
- ✗
Number provisioning.
Why it's wrong here
Provisioning is the act of assigning a new number, not migrating an existing one.
About these practice questions
One of 263 original CLCOR practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.