Which of the following layers of the OSI model provides non-repudiation services?
A.
The application layer
B.
The data-link layer
C.
The presentation layer
D.
The physical layer
Explanation:
The application layer of the OSI model provides non-repudiation services.
The application layer functions include identifying communication partners, determining resource
availability, and synchronizing communication.
When identifying communication partners, the application layer determines the identity and
availability of communication partners for an
application with data to transmit.
The non-repudiation service provides proof of the integrity and origin of data. It is also an
authentication that with high assurance can be
asserted to be genuine.
Answer option C is incorrect. The presentation layer provides a variety of coding and conversion
functions applied to the application layer
data.
Answer option B is incorrect. The data-link layer provides reliable transit of data across a physical
network link.
Answer option D is incorrect. The physical layer defines the electrical, mechanical, procedural, and
functional specifications for activating,
maintaining, and deactivating the physical link between communicating network systems.