CLCOR Practice Test 16 — 15 Questions

Question 1

Which TWO of the following are key components of the Cisco QoS model for Voice?

Accepted Answer

Classification and Marking. Voice traffic requires priority queuing and appropriate marking to ensure quality.

Answer

Best effort queuing

Answer

Strict Priority Queuing (PQ) without bandwidth limits

Answer

Weighted Random Early Detection (WRED)

Question 2

You are configuring Webex Hybrid Message Service. What is the primary purpose of this service?

Accepted Answer

To enable messaging between on-premises IM&P users and Webex App users.. The Hybrid Message Service allows interoperability between on-premises Cisco Unified Communications Manager (IM and Presence) and the Webex App.

Answer

To provide external federation for IM users.

Answer

To archive all Webex messages to an on-premises server.

Answer

To synchronize user passwords with Active Directory.

Question 3

What is the primary benefit of the 'Webex Edge' strategy?

Accepted Answer

It optimizes the quality and reliability of Webex traffic.. Webex Edge optimizes the user experience by prioritizing Webex traffic and providing a more direct, secure, and reliable connection to the cloud.

Answer

It allows you to use your own cloud hosting.

Answer

It removes the need for user authentication.

Answer

It eliminates the need for internet access.

Question 4

You are troubleshooting a scenario where G.711 is being used instead of the expected Opus codec between two endpoints in the same region. What is the most likely cause in the CUCM configuration?

Accepted Answer

Audio Codec Preference List. If the 'Audio Codec Preference List' or the 'Region' setting does not include Opus as a supported codec, CUCM will fall back to G.711.

Answer

Phone NTP settings

Answer

SIP Trunk Security Profile mismatch

Answer

Location-based bandwidth limit

Question 5

Which TWO of the following are functions performed by the CUBE as a Session Border Controller?

Accepted Answer

Media interworking. CUBE performs topology hiding and media interworking between different SIP networks.

Answer

Call routing in CUCM

Answer

IP phone registration

Answer

Voice mail storage

Question 6

You are observing that video traffic is marked as DSCP 0. How can you fix this at the network level without changing the endpoint configuration?

Accepted Answer

Use an ACL to match the traffic and a policy-map to re-mark it. A policy-map can be applied to the ingress port to classify the traffic based on ACLs and then re-mark it with the appropriate DSCP value.

Answer

Disable traffic shaping

Answer

Change the interface speed

Answer

Enable auto-qos on the interface

Question 7

You need to migrate users from an on-premises Cisco Unified Communications Manager (CUCM) to Webex Calling. Which tool allows for the bulk onboarding of users while maintaining existing directory synchronization?

Accepted Answer

CSV Template upload in Control Hub. The Webex Directory Connector or SCIM integration is used to sync, but the Webex Control Hub 'Users' management tool is the primary interface for bulk migration assignments.

Answer

Webex Edge for Devices

Answer

CUCM AXL API bulk exporter

Answer

Webex Migration Tool

Question 8

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 9

You are troubleshooting a scenario where users in a Hybrid Calendar deployment cannot see free/busy information for their on-premises Exchange resources. Which tool in Control Hub provides the most granular logs for the Hybrid Calendar service?

Accepted Answer

Hybrid Service Connector Status Logs. The Hybrid Service logs accessible via the 'Troubleshoot' section within the Hybrid Service connector page provide specific exchange connectivity data.

Answer

Exchange EWS Connectivity Test

Answer

Control Hub Analytics Dashboard

Answer

Webex Calling Provisioning Report

Question 10

What is the primary function of a 'Class Map' in a Cisco IOS QoS configuration?

Accepted Answer

To categorize and match specific traffic flows. A class map defines the criteria used to identify and categorize traffic, such as matching DSCP values or ACLs.

Answer

To define the action taken on traffic

Answer

To set the DSCP value for a packet

Answer

To assign a specific interface for traffic

Question 11

What is the primary function of the Cisco Webex Edge Audio service?

Accepted Answer

To allow calling into Webex meetings via the corporate PSTN network.. Webex Edge Audio allows users to use their existing PSTN connectivity to join Webex meetings, reducing audio costs.

Answer

To allow users to join meetings without an internet connection.

Answer

To encrypt all meeting audio traffic.

Answer

To provide high-definition video conferencing.

Question 12

When using Webex Calling with the Local Gateway, which protocol is used for the SIP trunk between the CUBE and the Webex Calling cloud?

Accepted Answer

SIP. Webex Calling uses SIP (Session Initiation Protocol) to establish and manage the media and signaling paths between the gateway and the cloud.

Answer

H.323

Answer

SCCP

Answer

MGCP

Question 13

What is the purpose of the 'Webex Service' account in Active Directory when using Directory Connector?

Accepted Answer

To read directory objects for synchronization.. The service account requires specific permissions to read directory objects from the domain controller to synchronize them to the Webex cloud.

Answer

To encrypt the synchronization traffic.

Answer

To manage the user's email password.

Answer

To bypass the firewall.

Question 14

A customer is migrating from CUCM to Webex Calling and requires the same extension numbers to be used across both environments simultaneously. Which feature facilitates this?

Accepted Answer

Directory Sync with CUCM Integration. Directory synchronization and specific routing patterns allow for extension overlapping during a phased migration.

Answer

Hybrid Call Service Aware

Answer

Dial Plan with PSTN Failover

Answer

Migration Assistant Tool

Question 15

A Cisco IOS XE gateway is failing to route calls because the dial-peer is not matching the incoming call. Which command helps you identify the dial-peer that matched the incoming call?

Accepted Answer

debug voip dialpeer all. debug voip dialpeer all shows the matching logic for both inbound and outbound dial-peers.

Answer

show voice call status

Answer

show dial-peer voice summary

Answer

debug ccsip messages