CLCOR Cloud And Hybrid Services Practice Question
A customer is migrating from CUCM to Webex Calling and requires the same extension numbers to be used across both environments simultaneously. Which feature facilitates this?
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
✓
Directory Sync with CUCM Integration
Directory synchronization and specific routing patterns allow for extension overlapping during a phased migration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hybrid Call Service Aware
Why it's wrong here
This is for presence and click-to-call, not number reuse.
- ✗
Dial Plan with PSTN Failover
Why it's wrong here
This is for routing, not concurrent number support.
- ✗
Migration Assistant Tool
Why it's wrong here
This helps move configuration but doesn't handle live routing.
- ✓
Directory Sync with CUCM Integration
Why this is correct
Syncing ensures the directory reflects the hybrid state required for overlapping extensions.
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.