Which two characteristics of the TACACS+ protocol are true? (Choose two.)
A.
uses UDP ports 1645 or 1812
B.
separates AAA functions
C.
encrypts the body of every packet
D.
offers extensive accounting capabilities
E.
is an open RFC standard protocol
Explanation:
A is for RADIUS protocol
D can be performed by RADIUS as well
E is incorrect because TACACS is Cisco proprietary
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@Lonix: you’re better then me at detail
…you noted the + sign which…my brain just skated over.
BUT …the question is wrong…it mis-interprits history of DARPA
http://en.wikipedia.org/wiki/TACACS
Tacacs = Unix based early 80’s OPEN SOURCE.
XTACACS = Cisco added the “Extended” it….and a bunch of coded macro with specific purpose and claimed ownership of it…..
TACACS+ was cisco developed (and likely still was Proprietary when this question was written) but THEN they “…released as an open standard beginning in 1993”
so….>if we are academic nit-pickers……E is technically accurate any time after 1993…but again Cisco Press has likely just re-printed this question since 1992.
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