CLCOR ON Premises Call Control Practice Test 2 — 15 Questions

Question 1

Which THREE of the following are valid states that can be configured in a Route List?

Accepted Answer

Standard Local Route Group. A Route List defines an ordered path. The items in that path are Route Groups, which have specific behaviors like 'sequential' or 'top-down' selection.

Answer

Partition

Answer

CSS

Question 2

Which THREE of the following items are considered part of the 'Cisco Unified Communications Manager' infrastructure redundancy model?

Accepted Answer

Device Pool. Device Pool (A) is correct because it is a fundamental CUCM configuration element that groups devices with common settings such as region, date/time group, and softkey template, and it plays a role in the redundancy model by associating devices with a CM Group that defines the ordered list of CUCM nodes they can register to. CM Group (C) is correct because it explicitly defines the prioritized list of Cisco Unified Communications Manager nodes (publisher and subscribers) that devices in an associated Device Pool will use for registration and call processing, which is the core of CUCM infrastructure redundancy. Subscriber Node (D) is correct because subscriber nodes are the CUCM servers that provide call-processing services and participate in redundancy by acting as backup registration targets within a CM Group when the primary node is unavailable. TFTP Server (B) is not part of the redundancy model itself; it is a separate service used for endpoint configuration file downloads and firmware, and although it can be run on CUCM nodes, it is not a redundancy construct like Device Pool, CM Group, or Subscriber Node. Region (E) is not part of the redundancy model; it is a configuration element used to define codec selection and bandwidth management between devices, not to provide failover or registration redundancy.

Answer

TFTP Server

Answer

Region

Question 3

You want to ensure that a specific device pool always uses a G.729 codec for inter-site calls. What is the most effective approach?

Accepted Answer

Define a Region matrix setting the audio bitrate between the two regions to G.729.. Codec selection for inter-site calls in CUCM is governed by Regions and their associated Region matrix, which defines the maximum audio codec (bitrate) allowed between any two regions. To force G.729 between two sites, you assign each site's devices to a region and set the matrix entry between those regions to G.729. This is the only supported mechanism that enforces codec choice based on the relationship between calling and called parties' locations.

Answer

Use a translation pattern.

Answer

Set the codec in the device pool.

Answer

Configure the codec on the SIP trunk.

Question 4

You are configuring a URI-based dial plan in CUCM 14. You have successfully enabled 'Allow Proxying of Requests' on the SIP Trunk Security Profile. What is the next mandatory configuration step to ensure the CUCM can correctly route incoming calls based on the Request-URI?

Accepted Answer

Configure a SIP Route Pattern for the domain portion of the URI.. To route incoming URI calls, the CUCM must be configured to accept the URI. This is done by checking the 'Accept Presence Subscription' or ensuring the SIP Trunk is associated with a Routing Lookup Policy that supports URI routing.

Answer

Add a translation pattern with a CSS that includes all partitions.

Answer

Disable the 'Redirect by Application' setting on the trunk.

Answer

Change the SIP Trunk protocol to H.323 for better URI handling.

Question 5

Which CUCM feature allows an administrator to automatically register new phones using a pre-defined device template?

Accepted Answer

Auto-Registration. Auto-Registration in CUCM allows new phones to automatically register without manual configuration by using a pre-defined device template and a dedicated auto-registration partition and CSS. When a phone boots up and requests configuration, CUCM assigns it a DN from the auto-registration range and applies the template. This feature simplifies the addition of new phones but is typically used in secure environments only for initial deployment.

Answer

Device Provisioning

Answer

Extension Mobility

Answer

Bulk Administration Tool (BAT)

Question 6

You have a cluster with two nodes. You need to verify the database replication status between the publisher and the subscriber. Which CLI command is the correct choice?

Accepted Answer

utils dbreplication runtimestate. The command 'utils diagnose test' or 'utils dbreplication runtimestate' is used to check the health of the database synchronization between nodes.

Answer

show status

Answer

utils network connectivity

Answer

show cluster status

Question 7

You are configuring a SIP trunk for a third-party gateway. The gateway requires the 'Diversion' header to be sent for call forwarding. Which setting on the SIP Profile enables this?

Accepted Answer

Diversion Header Delivery - Outbound. The 'Redirect by Application' or 'Diversion Header' settings in the SIP Profile determine how call forwarding info is passed to external gateways.

Answer

SIP Trunk Security Profile

Answer

Redirect by Application

Answer

Diversion Header Delivery - Inbound

Question 8

You are configuring a 'Route List'. If all the 'Route Groups' within the list are busy, what is the default behavior of the CUCM call routing engine?

Accepted Answer

The call is dropped immediately.. When a Route List is configured with multiple Route Groups and all of them are busy or unavailable, CUCM's default behavior is to drop the call immediately, typically returning a reorder tone or cause code. There is no automatic queuing or fallback to PSTN unless explicitly configured via a route list's 'Run on Every Node' or additional route groups. The call does not automatically retry the primary gateway or queue.

Answer

The call is sent to the primary gateway again.

Answer

The call is queued.

Answer

The call is forwarded to the PSTN.

Question 9

You need to ensure that an encrypted call is established between two phones. Which component must be properly configured for 'Mixed Mode' to support secure media (SRTP)?

Accepted Answer

CTL File / ITL File. In Cisco Unified Communications Manager (CUCM), secure media (SRTP) for encrypted calls requires that the phones trust the CallManager's certificate. This trust is established via the Certificate Trust List (CTL) file or the Identity Trust List (ITL) file. The CTL file is used in secure clusters to establish trust for the CallManager and other servers, while the ITL file is used in non-secure clusters. For Mixed Mode, which allows both secure and non-secure calls, the CTL/ITL files must be properly configured to enable encryption. Therefore, the CTL/ITL file is the component that must be properly configured.

Answer

SIP Trunk Security Profile

Answer

Application Dial Rules

Answer

Device Pool Security

Question 10

You are observing that calls are failing between two H.323 gateways. Which tool is best for verifying the H.225/H.245 signaling?

Accepted Answer

Real-Time Monitoring Tool (RTMT). The 'Cisco Unified Communications Manager Traces' viewed via RTMT are the primary way to debug H.323/SIP signaling messages.

Answer

Dialed Number Analyzer

Answer

Cisco Unified Reporting

Answer

Bulk Administration Tool

Question 11

Which TWO actions are required to successfully add a new media resource, such as a Conference Bridge, to CUCM?

Accepted Answer

Configure the Conference Bridge in the Device menu.. Option B is correct because a Conference Bridge (a software or hardware media resource such as Cisco Conference Bridge or IOS-based conference bridge) must first be defined and configured in Cisco Unified CM Administration under Media Resources > Conference Bridge (or via the Device menu) so that CUCM knows the resource exists and can register it. Option E is correct because after the conference bridge is configured, it must be assigned to a Media Resource Group (MRG), and that MRG then associated with a Media Resource Group List (MRGL) applied to devices, so that CUCM can allocate the bridge to endpoints requesting conference resources. Option A is not required because Cisco TFTP service is used for phone configuration file and firmware delivery, not for media resource registration. Option C is not required because adding a media resource does not necessitate restarting IP phones; they obtain updated MRGL assignments through normal configuration mechanisms. Option D is not required because the Region codec configuration governs codec selection between regions and is unrelated to the basic task of adding a conference bridge resource.

Answer

Enable Cisco TFTP.

Answer

Restart the IP phones.

Answer

Update the Region codec.

Question 12

Which TWO settings in the SIP Profile are crucial for interworking with a PSTN gateway that does not support PRACK?

Accepted Answer

Enable Early Offer. Option B (Enable Early Offer) is correct because when the PSTN gateway cannot support PRACK, the SIP profile must be configured to send the SDP in the initial INVITE (Early Offer) rather than relying on a reliable provisional response (100rel/PRACK) to deliver the media offer, ensuring the call setup can proceed without PRACK negotiation. Option D (Disable PRACK) is correct because explicitly disabling PRACK in the SIP Profile prevents the device from advertising or requiring the 100rel extension, which is necessary for interworking with a gateway that does not support PRACK. Option A (Set the Device Pool to 'None') is incorrect because the Device Pool is a device-level configuration for region/location and Cisco Unified CM group assignment, not a SIP Profile setting relevant to PRACK interworking. Option C (Use H.323 for the trunk) is incorrect because the scenario specifies a SIP Profile and PSTN gateway interworking over SIP; switching to H.323 is a different protocol and not a SIP Profile setting. Option E (Increase the Keepalive interval) is incorrect because keepalive timers affect SIP OPTIONS ping frequency for trunk monitoring, not PRACK or early media negotiation.

Answer

Set the Device Pool to 'None'.

Answer

Use H.323 for the trunk.

Answer

Increase the Keepalive interval.

Question 13

Which THREE steps are involved in the 'Cisco Unified Communications Manager' disaster recovery process?

Accepted Answer

Perform a full system backup using DRS.. Option B is correct because the Cisco Unified Communications Manager disaster recovery process begins with a full system backup using the Disaster Recovery System (DRS), which captures the database, configuration, and other critical components needed for later restoration. Option D is correct because after the backup, the data must be restored using the DRS Restore tool, which repopulates the newly installed CUCM instance with the saved configuration and database. Option E is correct because disaster recovery requires installing a fresh CUCM instance on the new hardware before the DRS restore can be performed, since the restore targets a clean, matching CUCM installation. Option A is incorrect because deleting existing TFTP files is not a defined step in the CUCM disaster recovery process and could disrupt phone registration and configuration file delivery. Option C is incorrect because 'utils dbreplication reset' is used to rebuild database replication between cluster nodes, not as a standard step in the disaster recovery backup and restore workflow.

Answer

Delete the existing TFTP files.

Answer

Run the 'utils dbreplication reset' command.

Question 14

When troubleshooting a failing call, which THREE items should be checked in the 'Route Pattern' configuration?

Accepted Answer

Numbering Plan type. Route pattern configuration impacts reachability, routing, and digit manipulation, making these the key areas for verification.

Answer

The phone's firmware version.

Answer

The Device Pool's date/time group.

Question 15

Which TWO actions help secure the communication between the CUCM and the IP phones?

Accepted Answer

Install the ITL/CTL security file on the phone.. Option A is correct because installing the ITL (Initial Trust List) or CTL (Certificate Trust List) file on the phone establishes the certificate-based trust anchor that lets the phone authenticate the CUCM's TFTP/configuration and signaling servers, enabling signed/encrypted communication. Option D is correct because enabling Mixed Mode on the cluster activates CUCM security (CAPF enrollment and TLS), allowing phones to register over an authenticated/encrypted signaling path while still permitting non-secure endpoints. Option B is not relevant because a static IP address only affects addressing, not the cryptographic protection of the phone-to-CUCM signaling or media. Option C is not correct because disabling HTTP access does not secure the SCCP/SIP signaling or media channels between the phone and CUCM. Option E is not correct because changing the MAC address has no bearing on securing the communication and would actually break device identity/registration.

Answer

Configure a static IP address.

Answer

Disable HTTP access.

Answer

Change the phone's MAC address.