Refer to the exhibit. A network engineer is trying to prevent VLAN attacks. Ports 0/20 – 24 are not
currently used on switch Cat2. VLAN 50 is an unused VLAN. How does the configuration in the
exhibit improve security on the switch Cat2?

A.
DTP is turned off.

B.
The native VLAN is different from any data VLAN.

C.
The ports have been configured as a secondary PVLAN.

D.
Trunking is negotiated rather than on.

E.
The ports have been configured as a primary PVLAN.