Which authorization protocol is generally compatible with TACACS?
a. LDAP
b. RADIUS
c. TACACS+
d. XTACACS
Answer: D
The Extended Terminal Access Controller Access Control System (XTACACS) protocol is a proprietary form of the TACACS protocol developed by Cisco and is compatible in many cases. Neither LDAP nor RADIUS is affiliated with the TACACS protocol, making answers A and B incorrect. Answer C is incorrect because the newer TACACS+ is not backward compatible with its legacy equivalent.
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Cryptography Basics
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