Which of the following OSI layers allows users to access network services such as file sharing?

Which of the following OSI layers allows users to access network services such as file sharing?

A.
Layer 1

B.
Layer 3

C.
Layer 4

D.
Layer 7

Explanation:
Basically File Transfer protocol (FTP) is responsible for file transfer which lies under Application
layer (Layer 7) of OSI layers.