CLCOR Infrastructure And Design Practice Question
Which design principle must be followed when implementing a centralized call processing deployment with remote branch offices connected via a WAN?
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
✓
Enable SRST on the local branch gateway to handle call processing during a WAN outage.
When the WAN link fails, Survivable Remote Site Telephony (SRST) or Cisco Unified SRST is required to keep the phones registered and functional.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable SRST on the local branch gateway to handle call processing during a WAN outage.
Why this is correct
SRST provides local call control when the WAN link to the central CUCM cluster is lost.
- ✗
Deploy a dedicated CUCM node in every branch office.
Why it's wrong here
This violates the centralized call processing design model.
- ✗
Configure H.323 gateways at each site to communicate directly with all remote phones.
Why it's wrong here
This is overly complex and does not address local survivability.
- ✗
Use RSVP to guarantee bandwidth across the WAN for signaling.
Why it's wrong here
RSVP manages bandwidth but does not provide call processing survivability.
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.