CLCOR Practice Test 6 — 10 Questions

Question 1

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?

Accepted Answer

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

Webex Calling Connector via port forwarding

Answer

SIP Trunk over VPN

Answer

H.323 Gatekeeper registration

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 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 4

Which protocol is primarily used by Cisco endpoints for music-on-hold (MoH) streaming from a Media Resource Group?

Accepted Answer

Multicast RTP. Multicast is the standard method for streaming MoH, as it saves significant bandwidth compared to unicast streams.

Answer

SIP INFO

Answer

HTTPS

Answer

Unicast RTSP

Question 5

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 6

What is the function of a 'Device Pool' in CUCM?

Accepted Answer

To group shared settings for devices.. A Device Pool is a collection of device-specific configuration settings like location, date/time, and CM group, which can be applied to devices in bulk.

Answer

To define user permissions.

Answer

To manage media resources.

Answer

To control call routing.

Question 7

Which network condition is the most significant contributor to poor voice quality in a VoIP environment?

Accepted Answer

Jitter. Jitter, packet loss, and latency are the three main contributors to poor voice quality, but jitter (variation in packet arrival) is often the most difficult to resolve once it reaches the end device.

Answer

Low CPU usage on the router

Answer

Static IP addresses

Answer

High bandwidth usage

Question 8

In a Cisco CUCM cluster, which node is responsible for managing the database and performing configuration updates?

Accepted Answer

Publisher. The Publisher node is the primary node that holds the master database copy and handles all configuration changes.

Answer

Subscriber

Answer

TFTP node

Answer

Music on Hold (MoH) node

Question 9

You are designing a high-availability solution for Cisco Expressway. Which element is required to load-balance traffic between multiple Expressway nodes?

Accepted Answer

External Load Balancer. An external load balancer is required to distribute incoming traffic across the cluster of Expressway-E nodes.

Answer

Cisco CUBE redundancy

Answer

Cisco UCM Group

Answer

DNS Round Robin only

Question 10

When configuring a policy-map for voice traffic, which command is used to assign a specific bandwidth guarantee to a class?

Accepted Answer

bandwidth [kbps]. The 'bandwidth' command allows you to reserve a specific amount of bandwidth for a class within a policy-map.

Answer

rate-limit [kbps]

Answer

guarantee [kbps]

Answer

priority bandwidth