Dynamic Host Configuration Protocol (DHCP) is a network application protocol used by devices (DHCP clients) to obtain configuration information for operation in an Internet Protocol network. A new DHCP server has been implemented. A technician checks some computers’ IP addresses and the IP addresses are not in the scope but they can reach network resources. The other computers can obtain the IP addresses issued by the DHCP server. Why?

A.
The DHCP server needs to be restarted

B.
The computers are still set with a static IP address

C.
The computers need to be restarted

D.
The computers network cards need to be upgraded