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Cisco Certified Network Associate (CCNA) · Cisco
Drag & Drop Scenario
Read the scenario requirements and decide your answer. Click Check Answer below to see the marked solution.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
TACACS+ (the T is for TCP) lots over overhead, Thoroughly Covers Packet radiUses UDP <-- no mnemonics for this one yet. Somebody come up with one, preferably using P to represent Password.
Provided answer is correct :)
Answer is correct. RADIUS uses UDP while TACACS+ uses TCP. RADIUS encrypts only the password in the access-request packet, from the client to the server. The remainder of the packet is unencrypted. Other information, such as username, authorized services, and accounting, can be captured by a third party. TACACS+ encrypts the entire body of the packet but leaves a standard TACACS+ header. RADIUS combines authentication and authorization. TACACS+ uses the AAA architecture, which separates AAA.