CLCOR Practice Exam 3 — 20 Questions

Question 1

Which of the following is a key advantage of utilizing Cloud Connected PSTN (CCP)?

Accepted Answer

It eliminates the need for on-premises PSTN gateways.. CCP allows for a simplified management experience by connecting your existing PSTN provider directly to the Webex Calling cloud.

Answer

It allows for legacy analog phone support without an ATA.

Answer

It provides free long-distance calling globally.

Answer

It requires no internet connection.

Question 2

What happens to a user's Webex account if they are removed from the synchronized Active Directory group?

Accepted Answer

The account is deactivated in Webex.. The Directory Connector will detect the removal and trigger the account's deletion or suspension in the Webex cloud based on the configured policy.

Answer

The account remains active indefinitely.

Answer

The account is moved to a guest group.

Answer

The account becomes a free account.

Question 3

Which log file is most useful for troubleshooting registration issues between an IP phone and CUCM?

Accepted Answer

Cisco CallManager Traces. The Cisco CallManager traces are essential for reviewing the registration/signaling exchange between the device and the call agent.

Answer

System Health Reports

Answer

Cisco TFTP Logs

Answer

Cisco Tomcat Logs

Question 4

Which THREE of the following are recommended steps when designing a secure signaling path between CUCM and a CUBE gateway?

Accepted Answer

Install and trust CA certificates. Using SIP Trunk Security Profiles, installing the correct CA certificates, and enabling TLS are the three pillars of securing the SIP signaling path.

Answer

Disable SIP digest authentication

Answer

Enable H.323 Fast Start

Question 5

Which configuration in Control Hub allows you to define the emergency address for a user in a Webex Calling environment?

Accepted Answer

Location Settings.. Location settings in Control Hub allow for the definition of E911 addresses associated with a specific site or user.

Answer

User Profile Settings.

Answer

Device Settings.

Answer

Organization Settings.

Question 6

Which TWO of the following are valid deployment models for the Webex Calling PSTN connectivity? (Choose two)

Accepted Answer

Local Gateway.. Customers can choose between Local Gateway (using on-premises hardware) or Cloud Connected PSTN (using a cloud provider partner) for their calling connectivity.

Answer

Webex Calling dedicated ISP.

Answer

Hybrid Cloud PSTN.

Answer

Peer-to-Peer PSTN.

Question 7

Which TWO of the following are valid requirements for deploying the Cisco Directory Connector? (Choose two)

Accepted Answer

A Windows Server to host the connector software.. The Directory Connector requires a Windows-based server and network connectivity to both the Active Directory domain controller and the internet (for the Webex cloud).

Answer

An on-premises CUCM cluster.

Answer

A separate Webex Calling license for every user.

Answer

A dedicated public IP address for the sync server.

Question 8

Which TWO of the following features are supported by the Webex Hybrid Message Service? (Choose two)

Accepted Answer

Instant message exchange.. The Hybrid Message service facilitates presence updates and message exchange between on-premises IM&P users and the Webex App.

Answer

Voicemail transcription.

Answer

Email synchronization.

Answer

Web-based meeting recording.

Question 9

When troubleshooting a Hybrid Media Service node, which log file is most critical for determining if the media is being routed correctly to the cloud?

Accepted Answer

Hybrid Media Service logs. The Hybrid Media Service logs on the Expressway-C contain the signaling and media path details necessary for troubleshooting pathing issues.

Answer

Cisco Discovery Protocol logs

Answer

System event logs

Answer

Call processing logs

Question 10

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 11

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 12

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 13

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 14

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 15

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 16

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 17

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 18

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 19

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 20

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