Refer to the exhibit. An engineer received a complaint that R1 and R5 cannot establish a Telnet connection on R2. TACACS server application 10.1.1.10/24 is not receiving authentication requests from R2. OSPF and EIGRP are functional. Telnet credentials configured are username: Admin, and password: Cisco$123. Which action must be taken to enable the authentication on R2? (Choose one answer)

• A. R2(config)#username Admin privilege secret Cisco$123
  R2(config)#aaa authentication login Permanent group tacacs+
• B. R2(config)#username Admin privilege secret Cisco$123
  R2(config)#aaa authentication login default group tacacs+ local
• C. R2(config)#aaa authentication enable default group tacacs+ enable
• D. R2(config)#aaa authentication login Permanent group tacacs+ local

Correct Answer: B

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