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Which of the following are core functions of IDS?
Signature comparison and anomaly detection of packets
Blocking and filtering TCP/IP ports
Signature based antivirus shielding
Dynamic IP level packet routing
IDS focus on comparing packets to signatures and conducting anomaly detection. Many network appliances contain an IDS and also block and filter ports, have an antivirus, and route packets, but those would be functions of the appliance's firewall, AV shield, and router respectively.
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