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Which of the following authentication methods is MOST l…

A system administrator is using a packet sniffer to troubleshoot remote authentication. The administrator
detects a device trying to communicate to TCP port 49. Which of the following authentication methods is MOST
likely being attempted?

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A.
RADIUS

B.
TACACS+

C.
Kerberos

D.
LDAP

Explanation:
TACACS makes use of TCP port 49 by default.

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