A. Node-to-node delivery
B. Process-to-process delivery
C. Synchronization
D. Updating and maintenance of routing tables

Solution

B. Process-to-process delivery

Explanation

<p><span style="font-size: 14px;">Node-to-node delivery means transferring data between two directly connected devices (nodes) on the same network segment.&nbsp;</span><span style="letter-spacing: 0.01rem;">This is the main job of the Data Link Layer.</span></p><p><br></p><p><span style="font-size: 14px;">The Transport Layer (Layer 4 in the OSI model) ensures that data is delivered from one process (application) on a device to another process on another device.</span></p>