Troubleshooting Cisco IP Telephony and Video (CTCOLLAB)

Here you have the best Cisco 300-080 practice exam questions

  • You have 157 total questions across 32 pages (5 per page)
  • These questions were last updated on March 18, 2026
  • This site is not affiliated with or endorsed by Cisco.
Question 1 of 157
An IP phone that is connected through a Cisco Catalyst 3750 Series Switch is failing to register with the subscriber as a backup server. When the user presses the settings button on the phone, only the Cisco Unified Communications Manager publisher shows as registered. What is the most likely cause for this issue?
Answer

Suggested Answer

The suggested answer is B.

Question 2 of 157
Refer to the exhibit.
Exam 300-080: Question 2 - Image 1
An IP phone that is connected through a Cisco Catalyst 3750 Series Switch is failing to register with Cisco Unified Communications Manager. When the user presses the settings button on the phone, the Operational VLAN ID shows a blank entry. What is the most likely cause for this issue?
Answer

Suggested Answer

The suggested answer is D.

Question 3 of 157
You configured a Cisco ISR G2 as a SIP gateway, but the gateway does not show that it is registered with Cisco Unified Communications Manager. What is causing this issue?
Answer

Suggested Answer

The suggested answer is E.

Question 4 of 157
Which issue would cause an MGCP gateway to fail to register with Cisco Unified Communications Manager?
Answer

Suggested Answer

The suggested answer is B.

Question 5 of 157
Endpoints are configured for both H.323 and SIP using the same URI and Cisco VCS settings, but the endpoints register only as H.323 endpoints. What is causing this issue?
Answer

Suggested Answer

The suggested answer is B.

About the Cisco 300-080 Certification Exam

About the Exam

The Cisco 300-080 (Troubleshooting Cisco IP Telephony and Video (CTCOLLAB)) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 157 practice questions across 32 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our 300-080 questions are regularly updated to reflect the latest exam objectives.