A company upgrades its CUCM cluster from version 11.5 to 12.5. After the upgrade, a batch of Cisco 7945 phones fails to register. The phones can ping the CUCM server and receive configuration files. The CUCM logs show 'Device not supported'. What is the most likely cause?

The phones' VLAN is not configured correctly.

The phones' firmware is too old and not supported by CUCM 12.5.

The phones' digest credentials are incorrect.

The phones' device pool is configured with the wrong region.

A Cisco IP phone is failing to register with CUCM. The administrator checks the phone's security settings and finds that the phone has an invalid certificate. What is the most likely impact of this issue?

The phone cannot obtain an IP address via DHCP.

The phone cannot resolve DNS records.

The phone cannot establish a secure connection to CUCM.

The phone cannot download its configuration file.

A Cisco 8831 conference phone fails to register. The phone displays 'Registering' and then 'Configuring IP'. You suspect a network issue but the phone can ping the CUCM server. Which log or diagnostic would provide the most direct evidence of the registration failure?

Review the phone's TFTP configuration file.

Verify the phone's firmware version.

Check the CUCM call manager traces for the phone's registration attempts.

Check the phone's DHCP lease information.

CiscoCertified Network Professional Collaboration

Domain 2Objective 3

2.3 Troubleshoot Endpoint Registration 350-801 Practice Questions (Page 1)

Part of the Protocols and Endpoints domain, which accounts for 10% of the 350-801 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~5–8 in this domain), expect 2–3 from this objective — we provide 31 practice questions to prepare you well beyond it. (estimate)

31questions here

7free pages

9concepts

10%of the exam

Questions 1–5

1application · medium
A company upgrades its CUCM cluster from version 11.5 to 12.5. After the upgrade, a batch of Cisco 7945 phones fails to register. The phones can ping the CUCM server and receive configuration files. The CUCM logs show 'Device not supported'. What is the most likely cause?
Select an answer first
2foundation · easy
A Cisco IP phone is failing to register with CUCM. The administrator checks the phone's security settings and finds that the phone has an invalid certificate. What is the most likely impact of this issue?
Select an answer first
3foundation · easy
A Cisco IP phone is failing to register. The administrator verifies that the SRV record for TFTP is correct. What other DNS record should the administrator verify to ensure the phone can resolve the TFTP server's hostname?
Select an answer first
4application · medium
A Cisco 8831 conference phone fails to register. The phone displays 'Registering' and then 'Configuring IP'. You suspect a network issue but the phone can ping the CUCM server. Which log or diagnostic would provide the most direct evidence of the registration failure?
Select an answer first
5foundation · easy
Which protocol is commonly used as an alternative to TFTP for provisioning Cisco IP phones?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to 350-801

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Cisco. “350-801” is a trademark of its owner, used for identification only.

2.3 Troubleshoot Endpoint Registration 350-801 Practice Questions (Page 1)

Questions 1–5

A company upgrades its CUCM cluster from version 11.5 to 12.5. After the upgrade, a batch of Cisco 7945 phones fails to register. The phones can ping the CUCM server and receive configuration files. The CUCM logs show 'Device not supported'. What is the most likely cause?

A Cisco IP phone is failing to register with CUCM. The administrator checks the phone's security settings and finds that the phone has an invalid certificate. What is the most likely impact of this issue?

A Cisco IP phone is failing to register. The administrator verifies that the SRV record for TFTP is correct. What other DNS record should the administrator verify to ensure the phone can resolve the TFTP server's hostname?

A Cisco 8831 conference phone fails to register. The phone displays 'Registering' and then 'Configuring IP'. You suspect a network issue but the phone can ping the CUCM server. Which log or diagnostic would provide the most direct evidence of the registration failure?

Which protocol is commonly used as an alternative to TFTP for provisioning Cisco IP phones?

Keep studying — Protocols and Endpoints