210-065 · Question #164
You are checking a DHCP server configuration for video endpoints. What is the role of option 150 in the configuration?
The correct answer is C. It is the TFTP server IPv4 address. DHCP option 150 is a Cisco-proprietary option that provides the IPv4 address of the TFTP server to Cisco endpoints for configuration file retrieval.
Question
You are checking a DHCP server configuration for video endpoints. What is the role of option 150 in the configuration?
Options
- AIt is the NTP server IPv4 address.
- BIt is not necessary to specify the role of option 150.
- CIt is the TFTP server IPv4 address.
- DIt is the TFTP server IPv6 address.
How the community answered
(43 responses)- A7% (3)
- B2% (1)
- C88% (38)
- D2% (1)
Why each option
DHCP option 150 is a Cisco-proprietary option that provides the IPv4 address of the TFTP server to Cisco endpoints for configuration file retrieval.
NTP server IPv4 addresses are provided via DHCP option 42, not option 150.
Option 150 has a well-defined role as the TFTP server address and must be correctly specified for endpoints to retrieve their configuration files.
DHCP option 150 is a Cisco-defined option that delivers the TFTP server IPv4 address to Cisco IP phones and video endpoints. Endpoints use this address to locate the TFTP server from which they download firmware and configuration files during provisioning. It is functionally similar to the standard option 66 but delivers an IP address rather than a hostname string.
Option 150 carries an IPv4 address; IPv6 TFTP server delivery is handled through DHCPv6 options using a separate numbering scheme.
Concept tested: DHCP option 150 TFTP server provisioning for video endpoints
Source: https://www.cisco.com/c/en/us/support/docs/voice/ip-telephony-voice-over-ip-voip/7546-dhcp.html
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