CLCOR Cloud And Hybrid Services Practice Test 5 — 15 Questions

Question 1

Where in Webex Control Hub do you verify the health status of Hybrid Service connectors?

Accepted Answer

Services tab. The 'Services' tab within Control Hub provides a dashboard for all deployed Hybrid Services and their connector health.

Answer

Troubleshooting tab

Answer

Devices tab

Answer

Users tab

Question 2

You are implementing Webex Calling with a Local Gateway. The requirement is to maintain internal dial plan transparency for existing extension-to-extension dialing. What must you configure?

Accepted Answer

Location-based routing and dial plan normalization. To maintain dialing transparency, the dial plan must be synchronized or normalized between the local gateway and the Webex Calling cloud dial plan.

Answer

Global Dial Plan Replication

Answer

Directory sync override

Answer

PSTN overflow routing

Question 3

Which protocol is required for the Webex Hybrid Directory Connector to communicate with on-premises Active Directory?

Accepted Answer

LDAP. The Directory Connector uses LDAP to query and sync users from the local AD to the Webex Cloud.

Answer

XML

Answer

SIP

Answer

SNMP

Question 4

What is the impact of removing a node from a Hybrid Video Mesh cluster that is currently hosting active meetings?

Accepted Answer

Active calls are dropped or experience disruption. Active meetings are disrupted. The system will attempt to re-route, but call quality will drop or the call will drop during the shift.

Answer

The node remains active until the last call ends

Answer

The cloud takes over the media immediately

Answer

The meetings are automatically migrated to another node

Question 5

A user is unable to receive incoming PSTN calls via a Webex Calling Local Gateway. You observe that the INVITE from the provider reaches the CUBE, but the CUBE sends a 403 Forbidden. What is the most likely cause?

Accepted Answer

The incoming dial peer is missing or misconfigured. A 403 Forbidden on the CUBE usually indicates that the dial-peer or translation pattern does not match the incoming number or that the caller is not authorized based on the configured dial peer settings.

Answer

The PSTN provider is using an unsupported codec

Answer

The Webex cloud is unreachable

Answer

The user's directory number is not in the PSTN white list

Question 6

Which license type is required to manage Webex Calling services in Control Hub?

Accepted Answer

Webex Calling License. The Webex Calling service license must be assigned to the user or organization to enable PSTN and calling features.

Answer

Webex Meetings License

Answer

Webex Room Device License

Answer

Webex Messaging License

Question 7

In a Webex hybrid environment, what is the primary role of the Expressway-C?

Accepted Answer

To provide a secure connector for Hybrid Services. The Expressway-C acts as the secure on-premises gateway that connects to the Webex cloud, handling signaling and media traversal.

Answer

To manage public DNS records

Answer

To act as a SIP proxy for internal phones

Answer

To replace the CUCM server

Question 8

You are troubleshooting high latency for Webex media. Which tool in Control Hub provides the best visibility into the path taken by the media packets?

Accepted Answer

Calling Quality of Service (QoS) Dashboard. The 'Webex Calling Media Quality' dashboard or the 'Troubleshooting' section in Control Hub provides detailed metrics on hop-by-hop latency.

Answer

Device logs

Answer

Packet Capture (PCAP) from the cloud

Answer

Network Analysis Tool

Question 9

Which THREE components are involved in the Webex Hybrid Media Service architecture?

Accepted Answer

Expressway-C. The architecture relies on Expressway-C, Media nodes, and the cloud-based management platform.

Answer

Cloud PSTN Gateway

Answer

CUCM Media Resource Group

Question 10

Which TWO tasks must be performed when setting up Webex Hybrid Calendar service with Microsoft Exchange?

Accepted Answer

Grant the service account ApplicationImpersonation rights. You must grant service account permissions to the calendar and configure the service in Control Hub.

Answer

Create a dedicated DNS zone for Exchange

Answer

Configure a SIP trunk between Exchange and Webex

Answer

Install an H.323 gateway in the DMZ

Question 11

Which TWO of the following are valid methods for connecting on-premises PSTN to Webex Calling?

Accepted Answer

Local Gateway. The two primary methods are the Local Gateway (via CUBE/Expressway) and Cloud Connected PSTN (CCP).

Answer

Direct SIP to CUCM

Answer

H.323 Trunking

Answer

Webex Edge for Calling

Question 12

When troubleshooting Webex Calling, which THREE factors are critical for maintaining call quality over a hybrid network?

Accepted Answer

Quality of Service (QoS) tagging. QoS, bandwidth, and latency are the three pillars of maintaining high-quality voice in hybrid environments.

Answer

Local database replication speed

Answer

Hardware firewall bypass

Question 13

Which TWO features are included in the Webex Control Hub 'Troubleshooting' tool?

Accepted Answer

Historical call quality data analysis. The tool allows for real-time call monitoring and historical report generation for voice/video calls.

Answer

Direct router configuration

Answer

Automated firmware deployment

Answer

User password reset

Question 14

Which THREE items are required to successfully register a room device to Webex?

Accepted Answer

A valid Webex Device license. An activation code, network access, and the device license are fundamental requirements.

Answer

A local SIP trunk

Answer

An existing CUCM registration

Question 15

Which TWO of the following describe the purpose of the Webex Edge for Devices service?

Accepted Answer

Enables hybrid registration (CUCM + Cloud). It allows for a hybrid registration model (cloud and CUCM) and enables cloud-based management features.

Answer

Automatically provisions local gateways

Answer

Provides a SIP trunking gateway

Answer

Replaces the need for a web proxy