Within the Open Systems Interconnection (OSI) Reference Model, authentication addresses the need
for a network entity to verify both

A.
The identity of a remote communicating entity and the authenticity of the source of the data that
are received.

B.
The authenticity of a remote communicating entity and the path through which communications
are received.

C.
The location of a remote communicating entity and the path through which communications are
received.

D.
The identity of a remote communicating entity and the level of security of the path through which
data are received.

Explanation:
OSI model needs to know the source of the data and that it is who it says it is. Path it the data take is
not cared about unless source routing is used. The level of security is not cared about inherently by
the receiving node (in general) unless configured. A is the best option in this question.