Which two DHCP options are commonly used for IP phone configuration? (Choose two.)
- Option 66
- Option 150
- Option 82
- Option 43
- Option 3
Explanation: According to the sources, DHCP options are used to provide clients with advanced configuration parameters and control information that cannot be delivered through basic DHCP commands .
Specifically, Option 150 is a Cisco-proprietary option used to tell an IP phone which TFTP server (or a list of servers) it should contact to download its configuration files .
While Option 66 is not explicitly defined in the provided text snippets, it is the standard IEEE DHCP option used to provide the IP address or hostname of a single TFTP server, and it is commonly used alongside or as an alternative to Option 150 for IP phone provisioning.
In contrast, Option 43 is identified in the sources as being used for lightweight Access Points (APs) to locate a Wireless LAN Controller (WLC) .
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