Which server type is commonly used for Cisco IP phone firmware updates? Learn why TFTP is the standard protocol for distributing firmware to Cisco IP phones—a crucial topic for the Cisco Certified Field Technician (CCT) exam.
Table of Contents
Question
A Cisco IP phone must obtain firmware updates. What server type is typically used for this?
A. TFTP
B. SMTP
C. SNMP
D. HTTP
E. SFTP
Answer
A. TFTP
Explanation
TFTP (Trivial File Transfer Protocol) is commonly used to distribute firmware updates to Cisco IP phones.
The typical server type used for Cisco IP phone firmware updates is TFTP (Trivial File Transfer Protocol).
- Cisco IP phones are designed to download firmware and configuration files from a TFTP server during the boot process or when a firmware upgrade is triggered.
- The TFTP server hosts the firmware files and configuration files (such as XMLDefault.cnf.xml), which the phone requests and downloads to complete the update process.
- While newer Cisco platforms may also support HTTP or HTTPS for firmware distribution, TFTP remains the default and most widely used protocol for this purpose, especially in traditional Cisco Unified Communications Manager (CUCM) and CallManager Express environments.
- The process involves placing the firmware files on the TFTP server, updating the phone’s configuration to point to the server, and then rebooting the phone to initiate the download.
TFTP is the standard protocol for delivering firmware updates to Cisco IP phones, ensuring efficient and automated distribution of necessary files during phone initialization or upgrades.
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