CLCOR Practice Test 17 — 15 Questions

Question 1

You need to prevent certain internal users from making international calls while allowing them to dial local numbers. What is the most efficient way to implement this in CUCM?

Accepted Answer

Assign a CSS to the device that includes a Partition containing local routes but excludes a Partition containing international routes.. Partitioning and Calling Search Spaces (CSS) are the standard mechanisms in CUCM to restrict dialing privileges based on the source of the call.

Answer

Use an Application Dial Rule.

Answer

Modify the device pool's location.

Answer

Configure a Route Filter on the Route Pattern.

Question 2

In CUCM, what is the purpose of the 'Calling Search Space' (CSS)?

Accepted Answer

To define which partitions a device can access.. The CSS is a list of partitions that a device or line can access to search for dialable patterns.

Answer

To define the codec used for calls.

Answer

To define the physical location of the device.

Answer

To define the bandwidth limit of a call.

Question 3

An administrator needs to enable Hybrid Calendar Service for a user who uses Microsoft Exchange 2019 on-premises. Which service component must be deployed to facilitate the integration?

Accepted Answer

Expressway-C Calendar Connector. The Hybrid Calendar Service requires the Expressway-C connector to communicate with the Exchange Web Services (EWS).

Answer

Hybrid Media Node

Answer

Webex Calling Gateway

Answer

Webex Edge Node

Question 4

You are deploying Webex Hybrid Data Security (HDS). After deploying the virtual machines for the HDS nodes, you find they are not appearing in Control Hub. What is the first step you should take to troubleshoot the registration?

Accepted Answer

Check the local log files in the HDS node using the CLI.. The HDS nodes communicate with the cloud via the activation code generated in Control Hub; if they don't appear, check the local logs on the node to see if the registration request is reaching the cloud.

Answer

Disable the firewall on the HDS node.

Answer

Restart the Cisco Webex Hybrid Services host.

Answer

Re-download the management certificate.

Question 5

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 6

Which TWO steps are required to successfully deploy the Webex Hybrid Calendar service with Microsoft Exchange?

Accepted Answer

Create an impersonation role in Exchange. The hybrid calendar requires the creation of an application account in Office 365 and the installation of a Calendar Connector.

Answer

Configure an H.323 gatekeeper

Answer

Enable Webex Meetings on the local CUCM

Answer

Disable Active Directory integration

Question 7

You need to ensure that the Webex Hybrid Calendar service can access an Exchange 2019 environment. Which authentication method is recommended by Cisco for this deployment?

Accepted Answer

OAuth 2.0. For Exchange 2019, modern authentication (OAuth) is the standard and recommended approach for security and compatibility.

Answer

Digest Authentication

Answer

Basic Authentication

Answer

Kerberos Constrained Delegation

Question 8

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

Question 9

An endpoint using the Opus codec is experiencing one-way audio. The SDP exchange indicates that the endpoint is offering a wideband range. Where in CUCM would you modify the Region settings to force the use of a specific codec for this endpoint?

Accepted Answer

Region Settings. The Region settings in CUCM define the maximum audio bit rate between regions; the codec is chosen based on these region constraints.

Answer

Service Parameters

Answer

Device Pool

Answer

SIP Profile

Question 10

You notice high latency on calls placed through a Local Gateway. Which metric should you inspect in the Webex Control Hub to confirm the issue is with the network path?

Accepted Answer

Network latency and jitter.. The 'Quality of Service' (QoS) and 'Network Metrics' within the Webex Control Hub Troubleshooting section provide data on jitter, packet loss, and latency.

Answer

Calling license usage.

Answer

User status.

Answer

Device firmware version.

Question 11

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 12

A company uses Webex Hybrid Calendar Service. Users report that the 'Join' button is missing from their Webex Room devices for scheduled meetings. What is the most likely cause?

Accepted Answer

The user's Exchange mailbox is not assigned to the Hybrid Calendar service. The Hybrid Calendar Service requires the meeting host to be enabled for the service and the invite to contain specific URI information that the calendar connector parses to generate the join button.

Answer

The Webex site is not integrated with the Control Hub

Answer

The Room device has not been registered to Webex

Answer

The Expressway-C does not have a public certificate

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 dashboard in Control Hub provides insights into the quality and usage of hybrid services?

Accepted Answer

Analytics Dashboard. The Analytics dashboard in Control Hub is the central location for viewing performance metrics and usage data for various services.

Answer

Device Dashboard

Answer

Troubleshooting Dashboard

Answer

Management Dashboard

Question 15

You need to verify that an endpoint is correctly sending RTCP reports to Cisco Unified Communications Manager. Which field in the RTCP packet header would you examine to track the jitter statistics?

Accepted Answer

Interarrival Jitter. RTCP SR (Sender Report) and RR (Receiver Report) packets contain interarrival jitter fields to help calculate network quality.

Answer

Sequence Number

Answer

SSRC

Answer

Timestamp