Which of the following files are necessary when deploying IP phone auto version upgrade? (Multiple Choice)

Question

Options

• AVersion upgrade file in binary mode
• BUpgrade policy file
• CDirectory
• DLog file

• A
  80% (16)
• C
  5% (1)
• D
  15% (3)

Explanation

For IP phone auto version upgrade to function, two files must be present on the upgrade server: the version upgrade file (the actual firmware in binary format, e.g., a .bin file) and the upgrade policy file (a configuration file that defines upgrade rules such as target version, source URL, and trigger conditions). Without the binary firmware, there is nothing to install; without the policy file, the phone has no instructions telling it when or how to upgrade.

C (Directory) is incorrect because a directory is simply a storage container on the server - it is part of the server's file system organization, not a required file in the upgrade mechanism itself. D (Log file) is incorrect because logs are output generated after an upgrade attempt, not input files required to initiate one.

Memory tip: Think "What + How" - the binary file is what gets installed, and the policy file tells the phone how and when to install it. Anything else (folders, logs) is optional infrastructure, not a requirement.

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