As you increase the layers of security in your organization, you must watch the network behavior closely. How can a firewall have a negative impact on the performance of your network?

A.
It can authorize sensitive information from the wrong host

B.
It can block needed traffic

C.
It can decrypt secure communications that were supposed to get past the firewall encrypted

D.
It can restrict bandwidth based on QoS

E.
It can filter packets that contain virus signatures