A network technician is investigating an IP phone that does not register in the VoIP system Although it received an IP address, it did not receive the necessary DHCP options. The information that is needed for the registration is distributes by the OHCP scope All other IP phones are working properly.
Which of the following does the technician need to verify?
A . VLAN mismatch
B . Transceiver mismatch
C . Latency
D . DHCP exhaustion
Answer: A