A new floor has been added to the enterprise campus network, providing client access for
desktop PCs, laptops, and IP phones for employees and guests. During verification, a few
desktop PCs have limited corporate access but not Internet access. Most other desktop
PCs, all laptops, and IP phones are working correctly. Additional information indicates that
the desktop PCs are obtaining IP host addresses from the DHCP server, which is intended
for only the IP phones. Where should troubleshooting about this connectivity issue be focused?

A.
client network configuration

B.
VLAN mapping

C.
DHCP server and options

D.
DNS

E.
routing protocols

F.
first-hop redundancy protocol