Exam N10-007 topic 1 question 287 discussion

Actual exam question from CompTIA's N10-007

Question #: 287
Topic #: 1

An AP is configured to authenticate clients by using their Active Directory username and password. The AP uses UDP to connect to the authentication service, which then queries Active Directory. Which of the following authentication services is being used by the AP in this scenario?

A. RADIUS
B. TACACS+
C. LDAP
D. Kerberos

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Suggested Answer: A 🗳️

by xxz at Nov. 21, 2020, 3:52 a.m.

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Karim28

Highly Voted 4 years, 6 months ago

RADIUS uses UDP while TACACS+ uses TCP.

upvoted 19 times

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[Removed]

Highly Voted 4 years, 4 months ago

It seems that correct answer is A. RADIUS. The AP uses UDP port number 1812 to connect to the RADIUS. Radius uses UDP port number 1812 for authentication and authorization and 1813 for accounting. TACACS+ uses TCP port number 49. More information: https://www.geeksforgeeks.org/difference-between-tacacs-and-radius/

upvoted 7 times

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Chennings

Most Recent 3 years, 7 months ago

i really thought LDAP, but after reading the question again it is from an AP - remote user - radius fo sho

upvoted 2 times

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xxz

4 years, 6 months ago

RADIUS: Radius is a protocol that enables a single server to become responsible for all remote-access authentication, authorization, and auditing (or accounting) services. It is an authentication and accounting system used by many Internet Service Providers (ISPs). When you dial in to the ISP you must enter your username and password. This information is passed to a RADIUS server, which checks that the information is correct, and then authorizes access to the ISP system. RADIUS implements a client/server architecture, where typical client is a router, switch, or AP and the typical server is a Windows or Unix device that is running RADIUS software.

upvoted 5 times

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