After a recent security breach and a RADIUS failure, an engineer must secure the console port of each enterprise router with a local username and password. Which configuration must the engineer apply to accomplish this task? (Choose one answer)

• A. aaa new-model
  aaa authorization exec default local
  aaa authentication login default radius
  username localuser privilege 15 secret plaintextpassword
• B. aaa new-model
  line con 0
  password plaintextpassword
  privilege level 15
• C. username localuser secret plaintextpassword
  line con 0
  no login local
  privilege level 15
• D. username localuser secret plaintextpassword
  line con 0
  login authentication default
  privilege level 15

Correct Answer: D

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