CLCOR Practice Test 14 — 15 Questions

Question 1

You are configuring a hybrid calling scenario. Which component must be configured to enable inter-cluster dialing between on-premises CUCM and Webex Calling?

Accepted Answer

A SIP Trunk between CUCM and the CUBE.. A SIP Trunk between the CUCM cluster and the Webex Calling cloud (via a CUBE) is required to route calls between the two environments.

Answer

An H.323 Gatekeeper.

Answer

A secondary Webex app.

Answer

A PSTN Gateway.

Question 2

Which TWO of the following media resource types are supported in CUCM?

Accepted Answer

Media Termination Point (MTP). Transcoders and MTPs are core media resources in the Cisco collaboration suite.

Answer

IP Phone

Answer

Dial-Peer

Answer

Voice Gateway

Question 3

You are configuring QoS for a Cisco Unified Communications Manager (CUCM) deployment. You need to ensure that audio media traffic between endpoints is marked correctly. Which DSCP value should be assigned to RTP audio traffic according to the Cisco SRND best practices?

Accepted Answer

DSCP 46 (EF). Cisco best practices recommend marking RTP audio traffic with EF (Expedited Forwarding) or DSCP 46 to ensure low latency and low jitter.

Answer

DSCP 34 (AF41)

Answer

DSCP 24 (CS3)

Answer

DSCP 0 (BE)

Question 4

A user in your organization cannot see their on-premises calendar events in the Webex App. You have verified that the Webex Hybrid Calendar Service is registered. What is the most likely cause?

Accepted Answer

The Hybrid Calendar service account lacks 'Full Access' permissions to the user's mailbox.. The Hybrid Calendar Service requires the user to be associated with an email address that matches the calendar resource; if the synchronization is failing, the Exchange or O365 integration requires re-authentication via the Connector host.

Answer

The user is not assigned a Webex Calling license.

Answer

The Webex Hybrid Message Service is not running.

Answer

The Cisco Directory Connector has not synced the user object.

Question 5

Which protocol is primarily used for the transmission of real-time voice and video data between two endpoints?

Accepted Answer

RTP. RTP (Real-time Transport Protocol) is the standard for media transport.

Answer

SCCP

Answer

TFTP

Answer

SIP

Question 6

You are deploying Webex Calling with Local Gateway. Which component must be configured to allow PSTN connectivity for users who have migrated from on-premises CUCM to the cloud?

Accepted Answer

SIP Trunk via Local Gateway. The Local Gateway (LGW) uses a SIP trunk to connect the Webex Calling cloud to on-premises PSTN gateways or Session Border Controllers (SBCs).

Answer

Webex Edge Connect

Answer

Webex Calling Cloud Connected PSTN

Answer

Unified Border Element (CUBE) API

Question 7

In a multi-site deployment, you have a requirement to transcode between G.711 and G.729. If the transcoder resources are exhausted, what is the expected outcome for a new call requiring this conversion?

Accepted Answer

The call will be rejected. If the MRGL is exhausted or no transcoder is available, the call will fail the capability negotiation and be rejected by CUCM.

Answer

The call will use G.711 regardless

Answer

The call will proceed with no audio

Answer

The call will fall back to an MTP

Question 8

You are configuring a Webex Calling environment and need to integrate an on-premises PBX via a Local Gateway. Which component must be configured on the CUBE to ensure signaling reachability to the Webex Cloud?

Accepted Answer

SIP Trunk Group. A SIP Trunk must be established between the CUBE and the Webex Calling cloud using the specific Webex signaling IP addresses.

Answer

Cloud Connected PSTN Gateway

Answer

Media Termination Point

Answer

H.323 Gatekeeper

Question 9

Which feature in CUCM is used to block calls when the available bandwidth in a location is exceeded?

Accepted Answer

Locations CAC. Location-based Call Admission Control (CAC) is the native feature in CUCM that restricts calls when bandwidth limits are reached.

Answer

Gatekeeper

Answer

Bandwidth Manager

Answer

RSVP

Question 10

You are configuring a Webex Calling environment for a customer that requires integration with an existing on-premises PBX using a Cisco Unified Border Element (CUBE). Which gateway type should you register to Webex Control Hub to enable this connectivity?

Accepted Answer

Local Gateway. Local Gateways are used to connect on-premises PSTN or PBX systems to Webex Calling via a CUBE.

Answer

Cloud Connected PSTN Gateway

Answer

Webex Edge Connect Gateway

Answer

Virtual Gateway

Question 11

Which TWO of the following are common audio codecs used in Cisco collaboration?

Accepted Answer

G.711. G.711 and G.729 are the most ubiquitous codecs in Cisco voice deployments.

Answer

JPEG

Answer

H.264

Answer

MP3

Question 12

What is the default behavior for DSCP markings on traffic originating from a Cisco IP Phone that has not been configured with specific QoS policies?

Accepted Answer

Marked as DSCP 46 for voice and CS3 for signaling. By default, Cisco IP Phones mark voice media as DSCP 46 (EF) and signaling as DSCP 24 (CS3) automatically.

Answer

Marked as DSCP 34 (AF41)

Answer

Traffic is not marked until a policy-map is applied

Answer

Marked as DSCP 0 (Best Effort)

Question 13

You are deploying a Webex Room device in a hybrid environment. What is the benefit of registering it to Webex instead of on-premises CUCM?

Accepted Answer

It enables full access to Webex cloud features like whiteboarding and AI-driven metrics.. Registering to the cloud allows the device to receive automatic updates and access Webex-specific features like whiteboard sharing and cloud-based call control.

Answer

It allows the device to function without an internet connection.

Answer

It reduces the bandwidth required for video calls.

Answer

It forces the device to use on-premises media routing.

Question 14

You are troubleshooting a scenario where video quality is degrading during periods of high data utilization. You identify that video traffic is being dropped in the network. What is the most likely cause if you are using CBWFQ?

Accepted Answer

Video is not being correctly classified into the priority queue. If video traffic is not being classified into the correct class-map, it falls into the default class, which is likely experiencing congestion and drops.

Answer

The voice traffic is taking up all bandwidth

Answer

The router's CPU is overloaded

Answer

The interface is configured for full-duplex

Question 15

Where in Webex Control Hub do you go to view the health status of all deployed Hybrid Services connectors?

Accepted Answer

Services > Hybrid. The 'Hybrid' tab in Control Hub provides a centralized dashboard for all services, including status and alerts for individual connectors.

Answer

Devices > Management

Answer

Analytics > Reports

Answer

Users > Settings