An endpoint cannot connect to a valid TFTP server during the registration process.
Which two statements describe possible causes? (Choose two.)
A . The DHCP configuration contains TFTP server 66, but no DNS server is available.
B . The DHCP configuration contains TFTP server 150, but no DNS server is available.
C . No separate voice VLAN configuration on the switch port connected to the endpoint.
D . Cisco Unified Communications Manager CallManager services are not started.
E . Cisco Unified Communications Manager TFTP services are not started.
Answer: DE