Which two protocols are required for a Cisco 8800 series IP phone to successfully register with CUCM? (Choose two)
A. CDP
B. HTTP
C. TFTP
D. LLDP
E. SIP
F. DHCP
G. SCCP
Which two protocols are required for a Cisco 8800 series IP phone to successfully register with CUCM? (Choose two)
A. CDP
B. HTTP
C. TFTP
D. LLDP
E. SIP
F. DHCP
G. SCCP
The phone doesn’t use SIP to register with the CUCM.
IMO – the answer is B. HTTP and C. TFTP.
The phone actually uses HTTP over TCP/7690 to GET the config from the TFTP server. If HTTP fails, it falls back to TFTP over UDP/69.
Actually I’ll change that. It does use SIP REGISTER messages to register with the registrar (CUCM). But as far as i’m aware, it does primarily use HTTP (TCP/6970) to GET the config from the TFTP.
You decide. Maybe Wireshark it to check.