CLCOR Practice Test 4 — 25 Questions

Question 1

Which TWO of the following are essential components of a Cisco network readiness assessment for collaboration?

Accepted Answer

Bandwidth capacity analysis. Assessing existing bandwidth capacity and ensuring QoS settings are correctly applied are the two primary foundations for a network readiness assessment.

Answer

Analyzing NTP Stratum levels

Answer

Verifying phone firmware versions

Answer

Checking IP address assignment

Question 2

You have a cluster with multiple nodes. You want to ensure that phones in the 'New York' office prioritize registration to a 'New York' subscriber. How do you implement this?

Accepted Answer

Create a CM Group with the local subscribers and assign it to the Device Pool.. By creating a specific CM Group with the New York subscribers in the preferred order and assigning it to the New York Device Pool.

Answer

Use a Route Group to point to the subscriber.

Answer

Assign the phones to a specific Region.

Answer

Configure the TFTP server address in the phone.

Question 3

Which THREE of the following items must be verified during a site-to-site VPN check for collaboration traffic?

Accepted Answer

MTU size. MTU sizes (to avoid fragmentation), DSCP tag preservation (to maintain QoS), and UDP port ranges (for RTP media) are critical for successful inter-site communication.

Answer

DHCP relay configuration

Answer

NTP server reachability

Question 4

Which service must be running for a Cisco IP Phone to download its configuration file via TFTP?

Accepted Answer

Cisco TFTP. The Cisco TFTP service is responsible for providing configuration files and firmware updates to registered devices.

Answer

Cisco CallManager

Answer

Cisco CTIManager

Answer

Cisco Database Layer Monitor

Question 5

Which component in the CUCM dial plan allows you to match a pattern and simultaneously transform it into a new number before the final route lookup?

Accepted Answer

Translation Pattern. A Translation Pattern is used to change digits (e.g., adding an access code) before the call is routed to a final destination.

Answer

Route Pattern

Answer

Partition

Answer

Route Group

Question 6

You are designing a dial plan with a centralized PSTN egress. What must you configure to ensure that local extensions can be dialed directly across sites?

Accepted Answer

A CSS that includes all site-specific partitions.. You must configure a Calling Search Space that includes the partitions of all the internal extensions across the sites.

Answer

A shared device pool.

Answer

A translation pattern for each extension.

Answer

A route pattern that includes all extensions.

Question 7

When using 'Call Pickup', how does a user pick up a call that is ringing on another phone in the same pickup group?

Accepted Answer

By pressing the 'Pickup' softkey.. Users initiate a call pickup by pressing the 'Pickup' softkey, which is configured on their phone button template.

Answer

By dialing the target phone extension.

Answer

By selecting 'Hold' on their own line.

Answer

By accessing the CUCM web interface.

Question 8

Which TWO of the following are common reasons for database replication failure in a CUCM cluster?

Accepted Answer

Blocked database replication ports. NTP synchronization issues and TCP port connectivity (like 1515, 1502) between nodes are the most frequent causes of database replication failure.

Answer

Incorrect IP address in host file

Answer

High CPU utilization on the publisher

Answer

Missing TFTP files

Question 9

Which THREE of the following factors impact the quality of video calls in a network?

Accepted Answer

Packet loss. Jitter, packet loss, and latency are the three primary network factors that degrade real-time video performance.

Answer

Interface description

Answer

Router uptime

Question 10

How do you verify if a phone is registered to the primary CUCM subscriber?

Accepted Answer

Check the Status field in Device > Phone.. Device > Phone > Find > Look at the Status field in the search results or the device configuration page.

Answer

Check the CTI route points.

Answer

Check the Partition status.

Answer

Check the System > Server menu.

Question 11

You are designing a solution for a Cisco IP Phone that does not receive an IP address. Which DHCP feature must be enabled on the access switch to forward requests to the DHCP server?

Accepted Answer

IP Helper Address. DHCP Relay (or IP Helper Address) is required to forward broadcast DHCP requests across VLAN boundaries to a centralized DHCP server.

Answer

802.1X Authentication

Answer

Port Security

Answer

DHCP Snooping

Question 12

A user complains that they cannot see the 'Transfer' softkey on their phone during an active call. Where is the most appropriate place to check the softkey configuration?

Accepted Answer

Device > Device Settings > Softkey Template. Softkey Templates are assigned to devices (or device pools) to define which buttons appear during various call states.

Answer

System > Enterprise Phone Configuration

Answer

Device > Device Pool

Answer

Device > Phone

Question 13

Which TWO of the following fields are required when defining a Route Pattern?

Accepted Answer

Gateway/Route List. To define a route pattern, you must specify the pattern string itself and the destination (Gateway or Route List).

Answer

Codec

Answer

Bandwidth Limit

Answer

Softkey Template

Question 14

Which Cisco feature is used to ensure voice traffic is prioritized over web traffic on a Cisco access switch?

Accepted Answer

Quality of Service (QoS). QoS (Quality of Service) is the umbrella term for prioritizing voice packets using DSCP tags.

Answer

SNMP Traps

Answer

Spanning Tree Protocol

Answer

VLAN Trunking

Question 15

Which TWO configuration steps must be completed to ensure proper redundancy for a CUCM group? (Select TWO)

Accepted Answer

Assign the Device Pool to the device. To ensure CUCM redundancy, the Cisco Unified Communications Manager Group must be assigned to the Device Pool, and the Device Pool must be assigned to the phone.

Answer

Configure a separate SIP trunk for each node

Answer

Create a new partition for each node

Answer

Enable Heartbeat on the physical switch

Question 16

What is the primary function of the CUBE in a SIP trunking scenario?

Accepted Answer

Demarcation and SIP normalization. The CUBE (Cisco Unified Border Element) acts as a demarcation point between the enterprise network and the service provider, handling SIP normalization, media relay, and security.

Answer

Call routing for internal phones

Answer

Voice messaging storage

Answer

DHCP Server functionality

Question 17

Which THREE of the following are valid reasons to use a Media Termination Point (MTP)?

Accepted Answer

Bridging different signaling protocols. MTPs are used for DTMF conversion, protocol bridging, and codec/media type compatibility.

Answer

Providing transcoding for G.711 to G.729

Answer

Increasing voice bandwidth

Question 18

You are troubleshooting a scenario where internal calls between two offices are using the G.711 codec, but you want them to use G.729 to save bandwidth. Where should you change the codec setting?

Accepted Answer

System > Region Information > Region. The codec used between two devices is determined by the Region setting. You must update the Region matrix to specify G.729 between the two regions.

Answer

Device > Device Settings > Common Device Configuration

Answer

System > Device Pool

Answer

System > Location

Question 19

A user reports that their calls are failing when they roam to a different physical office site. You observe that the device is registered to the primary CUCM cluster but the Location-based CAC is blocking the call. What is the most likely cause?

Accepted Answer

The device is not assigned to a Device Pool with the correct Location configured for the new site.. If a device roams, it may inherit a different Location assigned via the Device Pool. If the bandwidth limit between the new location and the destination is exceeded, the call will be rejected.

Answer

The Region setting in the Device Pool has a lower bitrate than the required codec.

Answer

The device must be re-registered to a local subscriber instead of the primary cluster.

Answer

The Calling Search Space is not configured to allow inter-site dialing.

Question 20

You are configuring a SIP trunk between CUCM and a CUBE. Which setting is critical to ensure that the SIP signaling is encrypted?

Accepted Answer

SIP Trunk Security Profile. A SIP Trunk Security Profile is where you define the security mode (Authenticated or Encrypted) for the trunk.

Answer

Enterprise Parameters

Answer

Device Pool

Answer

SIP Profile