Methods for (71)people differ significantly from those for authenticating machines and programs, and this is because of the major differences in the capabilities of people versus computers.Computers are great at doing(72) calculations quickly and correctly, and they have large memories into which they can store and later retrieve Gigabytes of information. Humans don't. So we need to use different methods to authenticate people. In particular, the(73) protocols we've already discussed are not well suited if the principal being authenticated is a person (with all the associated limitations).
All approaches for human authentication rely on at least one of the followings:
71
A.authenticating
B.authentication
C.authorizing
D.authorization
72
A.much
B.huge
C.large
D.big
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A.network
B.cryptographic
C.communication
D.security
74
A.are
B.have
C.can
D.owned
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A.unique
B.expensive
C.important