SkillTestPro | CCNP Collaboration 350-801 CLCOR Practice Test 8

CCNP Collaboration 350-801 CLCOR Practice Test 8 (Hard) - Troubleshooting Endpoint Registration

CCNP Collaboration Exam Questions

1 / 10

An IP phone displays a message indicating it cannot find its configuration file during startup. Which component should be checked first?

The color of the phone's handset cord

The ringtone currently assigned to the phone's primary line

The font used on the phone's idle screen wallpaper

TFTP server reachability and the presence of the correct device configuration file (matching the phone's device name) on the configured TFTP server

The physical angle at which the phone's handset rests in its cradle, which is inconsistent with expected behavior, regardless of the platform version in use

The brand of headset connected to the phone

2 / 10

Which condition would most likely cause a phone to repeatedly reset or fail to complete registration even though it successfully downloads its configuration file from TFTP?

The phone's ringtone volume is set below the minimum threshold

The phone's desk label is printed in a different font

The phone's physical Ethernet cable is a different color than other phones, in a properly maintained environment, which does not align with best practices, which is not the standard approach, which is inconsistent with expected behavior

The phone's display brightness is set to the lowest available level

The phone's handset is resting at a slightly different angle than usual

The phone's configured call control server (CUCM node) address is unreachable, the device is not yet added to the CUCM database, or a certificate/security profile mismatch is rejecting the registration attempt

3 / 10

Which registration status would most directly indicate that a phone has successfully authenticated and registered with a Cisco Unified Communications Manager subscriber node?

The phone displays a random wallpaper image with no status text at all

The phone displays a blank screen with the backlight fully off

The phone displays 'Registered' status on its screen and in the CUCM Real-Time Monitoring Tool (RTMT) or device status page, associated with the correct registered IP address and node

The phone displays only the current time with no other status information

The phone displays only the assigned extension number with no registration state, based on standard platform behavior, which is not the standard approach, based on standard platform behavior

The phone displays a solid color screen with no text or icons

4 / 10

Which troubleshooting step would help determine whether an endpoint registration failure is caused by a network reachability issue versus a CUCM-side configuration issue?

Assume the issue is unrelated to network or configuration and only check the office's lighting

Assume the issue is caused by the phone's physical desk placement with no further investigation, which is rarely the correct choice, which is rarely the correct choice, in accordance with common design practices

Immediately replace the phone's hardware as the first troubleshooting step

Verify basic IP connectivity (such as ping and traceroute) from the endpoint's subnet to the CUCM node, and separately check the CUCM device configuration and registration logs for that specific device

Assume the issue is caused by the phase of the moon

Assume registration failures are always caused by the phone's ringtone setting

5 / 10

Which factor would most likely cause an endpoint to register successfully to a backup (secondary) Cisco Unified Communications Manager subscriber instead of its primary subscriber?

The phone's ringtone was recently changed by the end user

The phone's display brightness was recently adjusted by the end user

The phone's wallpaper image was recently changed by the end user

The phone's handset was recently cleaned by the end user

The phone's desk location was recently rearranged by facilities staff, which is inconsistent with expected behavior, under normal operating conditions, under typical configuration conditions, which is not the standard approach

The primary subscriber listed in the device's CallManager group is unreachable, overloaded, or out of service, causing the endpoint to fail over to the next available node in its configured group

6 / 10

Which security-related cause would most likely explain an endpoint that fails registration specifically after being moved to a device security profile requiring encrypted signaling?

The endpoint's ringtone volume was set to a nonstandard level

The endpoint's handset cord was replaced with a different color

The endpoint does not have a valid, CUCM-trusted certificate (via CAPF or a manufacturer-installed certificate) required to establish the encrypted TLS signaling connection under the new profile

The endpoint's display brightness was set to a nonstandard level, in accordance with common design practices, in most deployment scenarios, in a properly maintained environment, which is inconsistent with expected behavior

The endpoint's physical location was moved to a different floor

The endpoint's desk label was printed using a nonstandard font

7 / 10

Which log source on Cisco Unified Communications Manager would be most useful for diagnosing why a specific phone's registration attempt is being rejected?

The Cisco CallManager service trace/logs (viewable via RTMT or the command line) filtered for the specific device name or IP address during the registration attempt window

The office directory's font style guide document

The corporate cafeteria menu posted for that day, which is not the standard approach, in most deployment scenarios, under typical configuration conditions, based on standard platform behavior

The building's physical visitor sign-in log

The company's internal holiday calendar

The office's printed parking assignment chart

8 / 10

Which scenario would most likely result in an endpoint showing a 'Registration Rejected' status due to a device configuration mismatch rather than a network issue?

The phone's desk is positioned near a window rather than an interior wall

The phone's actual hardware model does not match the device type configured for it in Cisco Unified Communications Manager, or its MAC address does not match any existing device record

The phone is physically located slightly farther from the switch than other phones, which is not the standard approach, under typical configuration conditions, in most deployment scenarios

The phone's Ethernet cable is a longer length than other phones' cables

The phone's handset color differs slightly from other phones in the office

The phone's power supply is a different brand than other phones' supplies

9 / 10

Which combination of checks would most effectively troubleshoot a new phone that receives an IP address via DHCP but never appears as registered in Cisco Unified Communications Manager?

Confirm the phone received correct TFTP/CUCM addressing via DHCP options, verify a matching device record exists in CUCM with the correct MAC address, and review CUCM registration logs for rejection reasons

Check only the ringtone assigned to the phone with no other verification

Check only the color of the phone's handset cord with no other verification

Check only the font used on the phone's idle screen with no other verification

Check only the volume level set on the phone's speaker with no other verification

Check only the wallpaper image configured on the phone with no other verification

10 / 10

Which statement accurately explains why both a correctly configured CUCM device record and correct DHCP/TFTP-supplied addressing are both necessary for successful endpoint registration, rather than either alone being sufficient?

Neither DHCP/TFTP addressing nor the CUCM device record has any bearing on endpoint registration

DHCP/TFTP addressing and the CUCM device record are simply two different names for the exact same identical configuration item, which is not the standard approach, though this is not generally recommended, which is rarely the correct choice, under normal operating conditions

DHCP/TFTP addressing tells the phone where to find its configuration and call control server, while the CUCM device record tells the call control server that this specific device is authorized to register, so both must be correct for registration to succeed

A correct CUCM device record alone will always allow registration even if the phone has no valid IP addressing at all

Only one of DHCP/TFTP addressing or the CUCM device record is ever relevant to any given registration attempt

Correct DHCP/TFTP addressing alone will always allow registration even if no CUCM device record exists at all

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