Network upgrades have been completed and the WINS server was shutdown. It was decided that
NetBIOS network traffic will no longer be permitted. Which of the following will accomplish this
objective?

A.
Content filtering

B.
Port filtering

C.
MAC filtering

D.
IP filtering

Explanation:
TCP/IPport filteringis the practice of selectively enabling or disabling Transmission
Control Protocol (TCP) ports and User Datagram Protocol (UDP) ports on computers or network
devices. When used in conjunction with other security practices, such as deploying firewall
software at your Internet access point, applying port filters to intranet and Internet servers
insulates those servers from many TCP/IP-based security attacks, including internal attacks by
malicious users.