Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 185

During the Cisco IP Phone registration process, the TFTP download fails. What are two reasons for this issue? (Choose two.)

Answer options

• A. Option 100 string was not specified, or an incorrect Option 100 string was specified
• B. The Cisco IP Phone does not know the IP address of any of the Cisco UCM Subscriber nodes
• C. The Cisco IP Phone does not know the IP address of the TFTP server
• D. Option 150 string was not specified, or an incorrect Option 150 string was specified
• E. The DNS server was not specified, which is needed to resolve the DHCP server IP address

Correct answer: C, D

Explanation

The correct answers, C and D, are valid because if the Cisco IP Phone does not have the TFTP server's IP address, it cannot download necessary files, and an incorrect or missing Option 150 string can also lead to TFTP issues. Options A and B are not directly related to TFTP download failures, as they pertain to different aspects of the phone's configuration and connectivity.