210-060 · Question #272
Which three pieces of information are provided to the Cisco phone by the DHCP server after a reset has been initiated? (Choose three.)
The correct answer is A. default gateway E. IP address F. TFTP servers. When a Cisco IP phone boots or resets, it broadcasts a DHCP request to obtain network configuration. The DHCP server responds with three critical pieces of information: (E) an IP address to identify the phone on the network, (A) a default gateway so the phone can route traffic…
Question
Which three pieces of information are provided to the Cisco phone by the DHCP server after a reset has been initiated? (Choose three.)
Options
- Adefault gateway
- Bdial tone
- CARP table
- DSIP proxy server
- EIP address
- FTFTP servers
How the community answered
(32 responses)- A91% (29)
- C6% (2)
- D3% (1)
Explanation
When a Cisco IP phone boots or resets, it broadcasts a DHCP request to obtain network configuration. The DHCP server responds with three critical pieces of information: (E) an IP address to identify the phone on the network, (A) a default gateway so the phone can route traffic beyond its local subnet, and (F) the address of a TFTP server (typically delivered via DHCP Option 150 or Option 66) from which the phone downloads its configuration and firmware files. A dial tone (B) is generated by the call-processing system after registration, not by DHCP. An ARP table (C) is built locally by the phone through ARP broadcasts, not provided by DHCP. The SIP proxy server (D) is typically learned from the TFTP-downloaded configuration file, not directly from DHCP.
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