Your XYZ trainee Sandra asks you which are the four existing Regional Internet Registry (RIR's)?

LM authentication is not as strong as Windows NT authentication so you may want to disable its use, because an attacker eavesdropping on network traffic will attack the weaker protocol. A successful attack can compromise the user's password. How do you disable LM authentication in Windows XP?

Which element of Public Key Infrastructure (PKI) verifies the applicant?

Which of the following statements are true regarding N-tier architecture? (Choose two.)