单项选择题

WhatistrueaboutSYNcookies？（）

A.AllTCPoptionsaresupported，suchaslargewindows.
B.Theservercanhavemorethan8uniqueMSSvalues.
C.SYNcookiesarenotimplementedasamethodofdefendingagainstSYNfloods.
D.SYNcookiesareimplementedasamethodofdefendingagainstSYNfloods.

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单项选择题

DSCPvalue'101110'lookslikewhichIPPrecedencevaluetonon－DiffServcompliantdevices？（）

A.IPPrecedence2
B.IPPrecedence3
C.IPPrecedence4
D.IPPrecedence5
E.IPPrecedence6
F.IPPrecedence7

单项选择题

WhichofthefollowingisanexampleofasecuritytechnologythatcouldbeenabledbyNetflow？（）

A.AnomalyDetection
B.SYNCookies
C.Application
D.Contentfiltering
E.Anti-XProtection
F.AntiVirus