Wireless users are reporting issues with the company’s video conferencing and VoIP systems. The security
administrator notices internal DoS attacks from infected PCs on the network causing the VoIP system to drop
calls. The security administrator also notices that the SIP servers are unavailable during these attacks. Which
of the following security controls will MOST likely mitigate the VoIP DoS attacks on the network? (Select TWO).

A.
Install a HIPS on the SIP servers

B.
Configure 802.1X on the network

C.
Update the corporate firewall to block attacking addresses

D.
Configure 802.11e on the network

E.
Configure 802.1q on the network