CLCOR Infrastructure And Design Practice Question
A collaboration designer must ensure that inter-cluster calls between two CUCM clusters remain secure. Which mechanism must be implemented to ensure media remains encrypted from end to end?
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
✓
Ensure SRTP is enabled on the SIP Trunk Security Profile.
SRTP must be used across the SIP inter-cluster trunk to ensure the media stream is encrypted between endpoints in different clusters.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable SIP inspection on the firewalls.
Why it's wrong here
Disabling inspection is a security risk and doesn't handle encryption.
- ✗
Configure a VPN between the two clusters.
Why it's wrong here
VPNs secure the transport, but SRTP is required for end-to-end application-layer encryption.
- ✓
Ensure SRTP is enabled on the SIP Trunk Security Profile.
Why this is correct
SRTP is required on the trunk security profile to support encrypted media.
- ✗
Enable MTP (Media Termination Point) for all calls.
Why it's wrong here
MTP often causes media to be decrypted, breaking end-to-end security.
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.