CLCOR Cloud And Hybrid Services Practice Question
You are configuring a local gateway for Webex Calling. Which mechanism ensures that the Webex Cloud can communicate with your on-premises edge device without requiring inbound firewall ports?
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
✓
Outbound TLS connection from CUBE to Webex Cloud
Webex Calling Local Gateways use the Expressway-C or CUBE to establish an outbound TLS connection to the Webex cloud, removing the need for inbound port openings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Webex Calling Connector via port forwarding
Why it's wrong here
Port forwarding is not the architecture used for this secure connectivity.
- ✓
Outbound TLS connection from CUBE to Webex Cloud
Why this is correct
The CUBE initiates an outbound secure connection to Webex cloud.
- ✗
SIP Trunk over VPN
Why it's wrong here
VPN is not required for Webex Calling PSTN connectivity.
- ✗
H.323 Gatekeeper registration
Why it's wrong here
H.323 is not used for Webex Calling cloud interconnects.
About these practice questions
This CLCOR question is part of Courseiva's 263-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam 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.