A packet-filtering firewall operates at the Network and Data Link layers of the OSI model.

Print Preview is used to see how a document will look when it is ________

Fill in the blank(s) with correct word

The additional security option, used for credit card transactions, that keeps track of a customer’s historical shopping patterns and notes deviations from the norm is _____.

a. transaction incognito mode b.transaction identification code c.transaction-spam control software d. transaction-risk scoring software