1. In Telnet protocol, sender sends one character at a time. Explain how TCP would adopt in this scenario to accommodate the issues caused by the slow sender

2. Draw a time-line diagram for sliding-window to show how receiver may obtain the duplicate frames. What condition is necessary to detect duplicate frames. Draw both scenarios i.e.in which duplicate frames are detected and not detected by the receiver

3. How orphan frames are detected in the token-ring networks. Also explain how reliability is achieved in the token-ring network