Which layer of the OSI model provides flow control?

A.
Presentation.

B.
Transport.

C.
Network.

D.
Data link.

Explanation:
The transport layer, layer 4, provides end-to-end flow control.
Incorrect Answers:
A: The Presentation layer (layer 6) deals with data preparation, which includes code conversion
and encryption. Flow control is handled by the lower layers.
C: The network layer (Layer 3) is responsible for IP Addressing of the host and routing decisions.
It is not concerned with flow control.
D: The data link layer also does some flow control, as it manages node-to-node frame transfer.
However, having to pick between the two, I have selected Transport.